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Weather in Shoreham – February 2024

                                                   Extremely Mild and Wet

Temperatures

The average maximum temperature during February 2024 in Shoreham was 11.1 Celsius (52F), and that was around  2 Celsius (>3F) above the long-term average. In local records dating back to 1880, it equalled the highest average day-time temperatures set in 2022.    The  average minimum temperature was 6.9 Celsius (45F), and that was over 3 Celsius (>5F) above the February normal. This surpassed the previous night-time record, set in 1995, by 1.0 Celsius (1.8F). Thus, the overall February temperature this year was the highest since before 1880 by a considerable margin.  

The highest temperature recorded during the month was 16.5 Celsius (62F) on the 18th, but there were 4 other days with maxima above 13 Celsius (55F), including a high of 14.2 Celsius (58F) on  the 15th, and 13.8 Celsius (57F) on the 16th.  A further 18 days had highs between 10 and 13 Celsius (50-55F). No  cold days occurred during February, but the maximum on the 7th was only 7.1 Celsius (45F), and 5 consecutive days, beginning on the 23rd, had highs under 10 Celsius (50F). However, none of these days were particularly cool, with the lowest maximum of 8.4 Celsius (46F). This occurred on the 25th.   

Many mild nights occurred during February, and on 4 occasions the temperature stayed above 10 Celsius (50F).  The minimum  on the 18th was 10.9 Celsius (52F), with 10.8 Celsius (51F) on the 15th, and 10.4 Celsius (51F) on the 14th. A further 7 nights had lows between 9 and 10 Celsius (48-50F). All other minima ranged between 4 and 9 Celsius (39-48F) with just 4 exceptions. The 12th had a low of 1.6 Celsius (35F), and the 27th had a minimum of 1.7 Celsius (35F), but the coldest nights of the month were the 24th and 25th, when the temperature dipped to minus 0.6 Celsius (31F) and minus 0.9 Celsius (30F) respectively.   

The sea temperature was 8 or 9 Celsius (46-48F) throughout the month.

 

Frost

 

There were  2 air frosts during February, and that was 3 below average. The air frosts occurred on the nights of the 24th and 25th, and both were slight, with minima staying above minus 1 Celsius (30F). There were grass frosts on 6 nights, and that was 9 nights below the average.  The ground frosts on the 2nd, 12th and 13th were slight with grass temperatures above minus 2 Celsius (28F). A grass low of minus 2.1 Celsius (28F) was recorded on the 27th, but minus 5.0 Celsius (23F) occurred on the grass on 2 consecutive nights, the 24th and 25th. 

 

Rain

 

Rainfall in February amounted to 188.0 millimetres (7.4 ins.),  which was over 3 times the monthly average. It was the wettest February in the area since before 1880.  Measurable rain fell on 20 days, which was 4 days above the average, and  wet days (when 1 millimetre (0.04 ins.), or more, of rain falls) numbered 16, which was 6 days above the average. No measurable rain fell on the first 4 days of the month, and this included the only 2 completely dry days, the 3rd and 4th. All other days had a minimum of a trace of rain (less than 0.05 millimetres). The first wet day was the 6th, when 17.2 millimetres (0.68 ins.) of rain fell. This was followed by 12.2 millimetres (0.48 ins.) and 18.4 millimetres (0.72 ins.) on the 7th and 8th respectively. Long periods of rain and drizzle gave 9.0 millimetres (0.35 ins.) on the 13th, and a further 13.0 millimetres (0.51 ins.) on the 14th. High pressure then developed and the barometric reading on the 17th was above 1030 millibars. Remarkably, however, this was the wettest day of the month with 31.4 millimetres (1.24 ins.) of rain falling. Pressure fell rapidly between the 20th and 21st, and both the 21st and 22nd were wet with 10.8 millimetres (0.43 ins.) and 13.2 millimetres (0.52 ins.) respectively. Wet weather on the afternoon  and evening of the 25th was followed by a wet night, and the total for the rainfall day (09-09 GMT) was 30.6 millimetres (1.2 ins.). After 2 days with just a trace of rain falling, the last 2 days of the month brought more rain and drizzle, and on the 29th, 15.4 millimetres (0.61 ins.) of rain fell.. 

 

Hail

No hail was observed in this part of Shoreham during the month.  

 

Thunder

No thunder was heard in this part of Shoreham.

 

Snow

 

No sleet or snow was observed in this part of Shoreham.

 

Wind

 

Winds were predominantly from the southwest and accounted for just over half of the daily observations. A further 7 days had winds with a westerly component, and although another 7 days had winds with easterly components, these were usually transitory as areas of low pressure tracked over, or to the south of, southern England. The first week of the month and the last 10 days of the month were windy at times, although no especially windy days occurred. At Shoreham Airport,  westerly winds gusted to 31 knots (35 mph) in the early hours of the 5th, with brisk winds continuing through the 6th and peaking at 33 knots (38 mph) from the southwest in the late evening. Southerly winds gusted to 30 knots (34 mph) on the evening of the 8th, but thereafter the wind was often light until the afternoon of the 21st.  During the afternoon of the 21st, southwesterly gusts reached 32 knots (37 mph). Late in the afternoon of the 22nd, a vigorous cold front was accompanied by west-northwesterly winds gusting to 33 knots (38 mph), but the strongest winds of the month were yet to come,  and they were from an unusual direction. On the 26th, north-northeasterly winds blew for most of the day and there were many gusts above 30 knots (34 mph). The highest gusts were overnight and during the morning , with these peaking at 38 knots (43 mph). No further significant gusts occurred during the remainder of February.

 

 

Fog

 

Low cloud and mist thickened at times into fog on the morning of the 17th.

 

Statistics for February 2024

 

Reporting Site Highest Temp Lowest Temp Rain Total (mm) Wettest Rain days
Shoreham A/P 16.5 -2.8     21
Thorney Island 15.5 -1.7     23
Gatwick A/P 16.7 -2.9     20
Herstmonceux 15.7 -1.2     21
Bournemouth (Hurn) 16.0 -3.2     23
Middle Wallop 15.8 -2.6     23
Dieppe 18.3 2.1 92 27 19
  • Rainfall totals unreliable for all stations
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Weather in Shoreham – January 2024

                                                 A  Typical Winter Month

Temperatures

The average maximum temperature during January 2024 in Shoreham was 7.8 Celsius (46F), and that was close to the long-term average.  The  average minimum temperature was 3.2 Celsius (38F), and that was also close to the January normal.

The highest temperature recorded during the month was 12.3 Celsius (54F) on the 2nd, but 12.1 Celsius (54F) was recorded on the 3rd, and there were 11 other days when the temperature rose above 10 Celsius (50F). Each of the first 4 days of the month, and 9 of the last 11 days of January, had maxima above 10 Celsius (50F), with the latter mild spell peaking on the 24th when 11.7 Celsius  (53F) was recorded. A marked lowering of temperatures occurred at the end of the first week of January, and from the 7th to the 20th inclusive, maxima were below 7 Celsius (45F). On 7 of these colder days the temperature failed to rise above 4.1 Celsius (39F), including 4 consecutive days beginning on the 15th. There was no extreme cold, with the lowest maxima recorded being 2.1 Celsius (36F) on the 13th, and 3.2 and 3.3  Celsius (38F) on the 18th and 8th respectively.   

The only mild night of note during January was on the 2nd when a minimum of 10.7 Celsius (51F) occurred. However, the minimum on the 3rd was 9.3 Celsius (49F), and a further 4 nights had lows above 8 Celsius (46F), including a minimum of 8.9 Celsius (48F) on the 22nd. There were 16 nights with minima below 5 Celsius (41F), including 14 consecutive nights beginning on the 7th. The other 2 nights were the 23rd and 27th,  when lows of 2.7 Celsius (37F)  and 0.3 Celsius (32F) were recorded. Between the 7th and 20th, there was only 1 night with a minimum temperature above 2 Celsius (36F), namely the 12th when 4.8 Celsius (41F) occurred. The lowest temperatures were minus 5.8 Celsius (22F) on the 19th,  minus 4.9 Celsius (23F) on 16th, and minus 3,8 Celsius (25F) on both the 10th and 18th.  

The sea temperature was around 10 Celsius (50F) at first, but fell to 7 or 8 Celsius (45-46F) during the second week and remained at that level during the remainder of the month.

 

Frost

 

There were  7 air frosts during January, and that was 2 above average. All the air frosts occurred between the 10th and 20th,  including 5 of the 6 nights beginning on the 15th. The exception was the 17th, when a low of 1.7 Celsius (35F) occurred. All air frosts were ‘moderate’ in intensity, with each frosty night having a minimum temperature of minus 2 Celsius (28F), or lower.  There were grass frosts on 15 nights, and that was also 2 above average. Most of the grass frosts occurred between the 7th and 20th, including 5 consecutive nights beginning on the 7th, and 6 consecutive nights beginning on the 15th. The other nights with grass frosts were the 4th, 23rd, 27th and 28th. The lowest grass temperatures were minus 8.3 Celsius (17F) on the 19th, minus 6.7 Celsius (20F) on both the 18th and 20th, and minus 6.1 Celsius (21F) on both the 11th and 15th. 

 

Rain

 

Rainfall in January amounted to 82.8 millimetres (3.26 ins.),  which was slightly above the monthly average.  Measurable rain fell on 13 days, which was 4 days below the average, and  wet days (when 1 millimetre (0.04 ins.), or more, of rain falls) numbered 9, which was also 4 days below the average. The first day of the month was the wettest, with 23.4 millimetres (0.92 ins.) of rain measured, but in a very wet start to the new year,  a further 8.8 millimetres (0.35 ins.) fell on the 2nd, with 6.4 millimetres (0.25 ins.) on the 3rd, and another 22.8 millimetres (0.9 ins.) on the 4th.  In fact, the 62.4 millimetres (2.46 ins.) that fell during the first 4 days of January, represented 75% of the monthly total. No measurable rain occurred between the 6th and 19th, except for 2.6 millimetres (0.1 ins.) on the 8th. Further rain  occurred at times between the 20th and 25th, but the only daily fall above 3 millimetres (0.12 ins.)   was on the 21st, when 9.4 millimetres (0.37 ins.) of rain were recorded. No measurable rain fell on the last 5 days of the month. 

 

Hail

Snow pellets (soft hail) fell for a while late on the morning of the 8th.  

 

Thunder

No thunder was heard in this part of Shoreham.

 

Snow

 

Drizzle was followed by snow grains, then snow pellets and snow on the morning of the 8th. During the afternoon of the 8th there were snow showers, with one heavy shower mid afternoon which produced 1 to 2 centimetres (<1in.) of lying snow. This snow lay on the grass and garden for the following 3 days.

 

Wind

 

Winds with a westerly component were dominant, but only just, with north to northeasterly winds blowing at times during the second week, east to southeasterly breezes in the last week, and with variable winds around mid-month.  The lightest winds occurred around mid month, with windy conditions during the first week and again around the fourth week.  At Shoreham Airport,  the year began windy with a westerly gust of 32 knots (37 mph) at midnight, and gusts from the southwest of 33 knots (38 mph) late in the evening on the 1st, rising to 35 knots (40 mph) at midnight on the 2nd.  The afternoon and early evening on the 2nd were very windy, with southwesterly gusts reaching 49 Knots (56 mph) in mid afternoon. An active Atlantic frontal system on the evening of the 4th produced southerly gusts of 31 knots (35 mph). The following northwesterly winds in the early hours of the 5th reached 38 knots (43 mph). A quieter spell of weather ended on the 20th,  and the 21st was a particularly windy day,, culminating in southwesterly gusts of 41 knots (47 mph) in the evening. Further gusts from the southwest reached 43 knots (49 mph) in the early hours of the 22nd. After a brief lull, southwesterly winds increased again on the afternoon of the 23rd with 36 knot (41 mph) gusts in the late afternoon, and a 35 knot (40 mph) gust at midnight on the 24th. Northwesterly winds gusted to 33 knots (38 mph) before dawn on the 26th, but this was the last gust above 30 knots (34 mph) during the month.

 

 

Fog

 

Some early fog occurred on the 25th, before lifting into low cloud that shrouded the Downs at times. On the 29th there was sea fog during the morning, and visibility was as low as 50 to 100 metres for a while.

 

Statistics for January 2024

 

Reporting Site Highest Temp Lowest Temp Rain Total (mm) Wettest Rain days
Shoreham A/P 12.7 -7.1 96 35 13
Thorney Island 13.2 -5.9 106 28 12
Gatwick A/P 12.8 -7.9 110 29 13
Herstmonceux 12.8 -5.9 110 46 11
Bournemouth (Hurn) 13.4 -8.8 129 40 11
Middle Wallop 13.1 -6.1 113 33 10
Dieppe 13.8 -6.5 43 17 12
  • Rainfall totals unreliable for all stations
Posted on

Weather in Shoreham – December 2023

                                                            Very Mild and Wet

Temperatures

The average maximum temperature during December 2023 in Shoreham was 10.5 Celsius (51F), and that was around 1.5  Celsius (<3F) above normal for the time of year.  The  average minimum temperature was 6.7 Celsius (44F), and that  was also close to 1.5 Celsius (<3F) above the December average.  Overall, it was the 3rd mildest December in the area since 1880. Only the Decembers of 1934 and 2015 were milder.

The highest temperature recorded during the month was 14.1 Celsius (57F) on the 21st, but the maximum was 13.3 Celsius (56F) on the 9th, and a further 8 days had maxima above 12 Celsius (54F) including 6 out of the last 10 days of the month. The coolest weather occurred at the beginning of the month, with each of the first 7 days having highs below 10 Celsius (50F).  Only 3 other days had maxima below 10 Celsius (50F), and just 1 of these days had a maximum below 9 Celsius (48F). On the 13th, the top temperature was 8.7 Celsius (48F). During the first week of December there were 5 days with maxima below 9 Celsius (48F), but only 3 of these days had highs under 8 Celsius (46F). The 5th had a maximum of 6.5 Celsius (44F), with 3.7 Celsius (39F) and 0.1 Celsius (32F)  recorded on the 1st and 2nd respectively.   

There were several mild nights during December, and on 7 occasions the temperature remained above 10 Celsius (50F). All of the mild nights occurred after mid month. The highest minimum was 11.7 Celsius (53F) on the 25th, but 11.2 Celsius (52F) occurred on the 19th, and 10.9 Celsius (52F) on the 24th. A further 10 nights had minima ranging from 7 to 10 Celsius (45-50F). Only a few cold nights occurred in December. Although 9 nights had minima below 5 Celsius (41F), including 3 nights after mid month, only 5 nights had lows under 4 Celsius (39F). The last of these coldest nights was the 14th, when 2.9 Celsius (37F), the other low temperatures all occurred during the first week and included lows of minus 1.4 Celsius (30F) on the 1st and minus 2.9 Celsius (27F) on the 2nd.  

The sea temperature was briefly around 9 Celsius (48F) during the first week, otherwise it 10 or 11 Celsius (50-52F) throughout the month.

 

Frost

 

There were 3 air frosts during December, and that was 1 below average. The first 3 nights had air frost, although it was slight on the 2nd with a low of minus 0.9 Celsius (30F) recorded. The 6th had an air minimum of 0.0 Celsius (32F), but a grass frost occurred, 1 of  8 noted during the month.  That was 2 below the average.  There were grass frosts on 3 consecutive nights commencing on the 14th, but the lowest temperature was only minus 1.1 Celsius (30F) recorded on the 14th. All the other grass frosts occurred during the first 8 nights of December, the lowest temperatures were minus 3.3 Celsius (26F) on the 2nd, and minus 3.9 Celsius (25F) on both the 1st and 6th. 

 

Rain

 

Rainfall in December amounted to 148.4 millimetres (5.8 ins.),  which was around 30%  above the monthly average.  Measurable rain fell on 24 days, which was 4 days above the average, and  wet days (when 1 millimetre (0.04 ins.), or more, of rain falls) numbered 16, which was  1 day above the average. The first day of the month was dry,  but precipitation  commenced on the evening of the 2nd and continued, almost without break, until the afternoon of the 5th. Daily rainfall totals included 3.6 millimetres (0.14 ins.) on the 2nd, 30.6 millimetres (1.2 ins.) on the 3rd and 7.6 millimetres (0.3 ins.) on the 4th. Further heavy rain at the end of the week resulted in 18.0 millimetres (0.71 ins.)  on the 7th and 21.0 millimetres (0.82 ins.)  There were no completely dry days during the following week, although the only day when more than 4 millimetres (0.16 ins.) of rain occurred was on the 10th, when 7.6 millimetres (0.3 ins.) were measured. The 16th and 17th were both dry days, and no measurable rain fell on 4 out of the following 6 days. However, on the 19th, heavy rain and drizzle produced a total of 13.0 millimetres (0.51 ins.). The last week of the month stayed unsettled and there was heavy rain at times. Daily totals included 8.2 millimetres (0.32 ins,),  7.8 millimetres (0.31 ins.) and 8.8 millimetres (0.35 ins.) on the 25th, 27th and 30th respectively.  Overall, it appears that 2023 was the 3rd wettest year in the area for at least 160 years with a total of 1218.8 millimetres (48 ins.). That was more than 30% above the long-term annual average.  The year included 6 months with totals exceeding 100 millimetres (4 ins. ) per month, including each of the last 3 months of the year, which yielded a combined total of 563.6 millimetres (22.2 ins.) of rain. 

 

Hail

Hail around 5-7 millimetres (0.3 ins) in diameter fell during a heavy shower just after midnight on the 31st.  

 

Thunder

Two thunderstorms  occurred either side of midnight on the 30th/31st. The centres of the storms appeared to be to the southwest and northwest of Shoreham and 5 thunderclaps were heard.

 

Snow

 

There was light snow, followed by moderate freezing sleet (but mostly rain) mid to late evening on the 2nd. The resulting slush remained on the grass until about 0400 hours on the following morning.

 

Wind

 

Apart from the occasional interlude of east to southeast winds ahead of Atlantic depressions, mainly at the beginning of December, the month was very much dominated by winds from between southwest and northwest. Winds were strong at times,  particularly at the beginning of the second week, and again after the 20th.  At Shoreham Airport,  south to southeasterly winds peaked at 32 knots (36 mph) in the early hours of the 4th,  and winds from  a similar direction reached 33 knots (38 mph) on the morning of the 9th, with southwesterly winds also gusting to 33 knots (38 mph) in the afternoon and evening. Southwesterlies gusted to 34 knots (39 mph) on the afternoon of the 10th and the early hours of the 11th. The 21st was the next windy day with west, then northwesterly, winds reaching 35 and 36  knots (40-41 mph) in the early morning and late afternoon  respectively.  The 24th was windy all day with the highest gust of 38 knots (43 mph) from the west-southwest occurring during the afternoon.  Southwesterly gusts of 33 knots (38 mph) occurred early in the evening on the 25th, with southwesterly winds again prominent on the 27th with gusts to 38 knots (43 mph) in the afternoon. The windy conditions continued throughout the 28th, with the top gust of 37 knots (42 mph) occurring during the morning. After a brief lull, west-southwesterly gusts reached 35 knots (40 mph) on the afternoon  of the 29th. South to southwesterly winds strengthened on the evening of the 30th, with 37 knots (42 mph)  recorded either side of midnight. The 31st was the windiest day of the month with the highest gust of 41 knots (49 mph) occurring in the early hours.

 

 

Fog

 

Although there was sunshine at times, areas of freezing fog were close by through much of that day, with the densest fog occurring close to the river.

 

Statistics for December 2023

 

Reporting Site Highest Temp Lowest Temp Rain Total (mm) Wettest Rain days
Shoreham A/P 13.9 -3.5 139 29 19
Thorney Island 13.9 -2.3 169 33 20
Gatwick A/P 14.1 -3.8 180 40 20
Herstmonceux 14.0 -4.2 142 39 23
Bournemouth (Hurn) 14.2 -4.1 212 43 20
Middle Wallop 14.2 -4.1 196 40 20
Dieppe 13.7 -2.7 59 13 19
  • Rainfall totals unreliable for all stations
Posted on

Weather in Shoreham -November 2023

                                                    Very Wet and Windy

Temperatures

The average maximum temperature during November 2023 in Shoreham was 11.7 Celsius (53F), and that was very slightly below normal for the time of year.  The  average minimum temperature was 6.5 Celsius (44F), and that  was also less than 0.5 Celsius (<1F) below the November average.  

The highest temperature recorded during the month was 14.9 Celsius (59F) on the 13th, but 14.5 Celsius (58F)  occurred on the 1st, and maxima exceeded 14.0  Celsius (57F) on a further 5 days. The last of these very mild days was on the 19th when the temperature peaked at 14.2  Celsius (58F).  The majority of days (16) had highs ranging from 10 to 14 Celsius (50-57F), but there were several cooler days, mainly towards the end of the month. Of the 7 days having maxima below 10 Celsius (50F), only 1, the 10th, which had a high of 9.8 Celsius (50F),  occurred before mid-month.  Five of these cooler days occurred during the last week of November, with only 2 of these days having maxima below 7 Celsius (45F). On the 25th the temperature peaked at 6.2 Celsius (43F), but on the 30th, the temperature only reached 4.7 Celsius  (40F). 

There were no particularly mild nights during November, but the temperature stayed above 10 Celsius (50F) on 4 nights, including 3 nights with minima above 12 Celsius (54F). A low of 12.3 Celsius (54F) occurred on the first night of the month, with minima of 12.6 Celsius (55F) and 12.4 Celsius (54F) on the 14th and 18th respectively. On most nights (20) the temperature ranged between 4 and 10 Celsius (39-50F), but there were several colder nights, especially towards the end of the month. The lowest temperature during the first 24 days of November was 2.9 Celsius (37F) on the 11th, but 4 out of the last 6 days of the month had minima below 2 Celsius (36F). The 25th had a minimum of minus 0.5 Celsius (31F), but the following night was the coldest of the month with a low of minus 1 Celsius (30F).  

The sea temperature was around 16 Celsius (61F) at the beginning of November and slowly fell to 14 Celsius (57F) by the end of the third week. However, a sharper decline then ensued with 10 or 11 Celsius (50-52F) measured at the end of the month.

 

Frost

 

There were 2 air frosts during November, and that was 1 above average. A total of 8 ground frosts  occurred, and that was 2 above average . Most grass frosts were very slight with lowest temperatures ranging from minus 0.6 Celsius and minus 1.1 Celsius (30-31F). However, on the 25th and 26th grass minima were minus 3.9 Celsius and minus 4.4 Celsius (24-25F) respectively. 

 

Rain

 

Rainfall in November amounted to 173.8 millimetres (6.8 ins.),  which was around 80%  above the monthly average.  Measurable rain fell on 20 days, which was 4 days above the average, and  wet days (when 1 millimetre (0.04 ins.), or more, of rain falls) numbered 19, which was  8 days above the average. The month started wet with 25.2 millimetres (0.99 ins.) on the 1st. This was the wettest day of the month, but in a very changeable first half of the month, further heavy rain occurred. Daily totals included 13.4 millimetres (0.53 ins.) on the 3rd, 11.4 millimetres (0.45 ins.) on the 4th, 12.2 millimetres (0.48 ins.) on the 8th, 21.2 millimetres (0.83 ins.)on the 12th and 13.4 millimetres (0.53 ins.) on the 14th.   Although pressure was generally higher during the third week of November, rain, heavy at times, continued to fall. On the 19th, there were 10.6 millimetres (0.42 ins.) of rain, but then no measurable rain fell for 6 days. However, on the 26th and 27th there were 12.2 millimetres (0.48 ins.) and 5.8 millimetres (0.23 ins.) of rain recorded respectively, and that was the last measurable rainfall of the month.  

 

Hail

Small hail fell in a shower mid-morning on the 10th.  

 

Thunder

Lightning was observed to the south on the evening of the 9th, and a thunderstorm produced 4 rumbles mid-morning on the 10th.

 

Snow

 

There was no sleet or snow observed in this part of Shoreham. However, light sleet and snow occurred on the South Downs with a few flakes also falling in Steyning.

 

Wind

 

Apart from the occasional interlude of east to southeast winds ahead of Atlantic depressions, the month was very much dominated by winds from between southwest and northwest. The first part of the month,  especially, had some strong winds. At Shoreham Airport,  south to southeasterly winds increased during the 1st, gusting to 39 knots (45 mph) just before midnight. A further increase on the 2nd peaked at 54 knots (62 mph) in the early hours. The wind veered southwesterly and slowly decreased but backed southeast and increased to  34 knots (39 mph) early on the 4th.  However, southwesterly gusts on the afternoon of the 4th reached 41 knots (47 mph). Southwesterly gusts reached 31 knots (35 mph) early on the 6th. The 8th was windy with southwesterly gusts reaching 40 knots (46 mph) at midday. A brief respite was followed by a windy day on the 13th with  southwesterly gusts of 36 knots (41 mph) reported in the afternoon. The wind was slow to die down with 31 knots (35 mph) occurring early on the 14th.    The second half of the month was less stormy, although southwesterly winds gusted to 34 knots (39 mph) on the afternoon of the 19th.

 

 

Fog

 

There was no fog observed in this part of Shoreham.

 

Statistics for November 2023

 

Reporting Site Highest Temp Lowest Temp Rain Total (mm) Wettest Rain days
Shoreham A/P 15.4 -1.5 * * 19
Thorney Island 15.3 -2.3     20
Gatwick A/P 15.4 -3.5     19
Herstmonceux 14.9 -1.0     21
Bournemouth (Hurn) 15.2 -2.4     22
Middle Wallop 15.4 -2.9     20
Dieppe 16.0 2.9     24
  • Rainfall totals unreliable for all stations
Posted on

Weather in Shoreham – October 2023

                                         Extremely Wet and Very Mild

Temperatures

The average maximum temperature during October 2023 in Shoreham was 17.9 Celsius (64F), and that was nearly 2 degrees Celsius (3.5F) above normal for the time of year.  Only the Octobers of 1948 and 2022 had higher average maxima in local records dating back to 1880. The average minimum temperature was 11.4 Celsius (53F), which was over 1 degree Celsius (2F) above the October  average. Only 6 Octobers have had milder nights during the last 143 years.  

The highest temperature recorded during the month was 23.0 Celsius (73F) on the 1st, but 22.8 Celsius (73F) occurred on the 8th, with 22.4 Celsius (72F) on the following day. A further 5 days had maxima above 20 Celsius (68F),  with the last of these pleasantly warm days occurring on the 19th. Some cooler days occurred, but just 11 days had maxima below 17 Celsius (63F), with all of the cooler days after the 13th. Only 4 days had maxima below 15 Celsius (59F). The 16th, 27th and 29th had highs of 14.2 , 14.9 and 14.1 Celsius (58, 59 and 57F) respectively, but the coolest day of the month was the 15th with a high of 12.6 Celsius (55F). 

There were no record-breaking warm nights during October, but the temperature only fell to 17.4 Celsius (63F) on the 1st, and 3 consecutive nights, beginning on the 11th, had minima between 16.0 and 16.6 Celsius (61-62F). On many nights (12) the minimum temperature ranged from 10 to 13 Celsius (50-55F), but cooler nights occurred, more especially around the middle of the month. On 9 occasions the temperature fell below 10 Celsius (50F), but only 3 nights had lows under 7 Celsius (45F).  The temperature dipped to 6.7 Celsius (44F) on  the 22nd, with 5.1 Celsius (41F) measured on the 15th, but the coldest night of the month was the 15th with a low of 2.6 Celsius (37F).  

The sea temperature was around 18 or 19 Celsius (64-66F) during the first fortnight but slowly decreased to 16 Celsius (61F) by the end of the month.

 

Frost

 

There were no air or grass frosts during October. The lowest grass temperature was 0.6 Celsius (33F) on the 15th. 

 

Rain

 

Rainfall in October amounted to 241.4 millimetres (9.5 ins.),  which was well over double the monthly average. It was the second wettest October (behind October 2000) since local records began in 1880.  Measurable rain fell on 18 days, which was 1 day below the average, and  wet days (when 1 millimetre (0.04 ins.), or more, of rain falls) numbered 16, which was  3 days above the average. No measurable rain fell during the first 10 days of the month, although dew on both the 8th and 9th amounted to 0.6 millimetres (0.02 ins.)  and was added to the monthly total.  The first significant rain of the month commenced on the evening of the 11th and by the following morning 10.2 millimetres (0.4 ins.) had fallen. Further rain fell on the following evening and added another 17.2 millimetres (0.7 ins.) to the total by the morning of the 13th. Some of the rain was heavy during the 13th, and another 6 millimetres (0.25 ins.) fell after 0900 GMT, the end of the rainfall day. After 4 dry days, heavy rainfall began in earnest, with 29.8 millimetres  (1.2 ins.) falling on the 18th, another 20.2 millimetres (0.8 ins.) fell on the 19th, with 11.8 millimetres (0.45 ins.) on the 20th. The 22nd was dry, but the last 8 days of the month produced a total of 137.8 millimetres (5.4 ins.) of rain. This was made up of the following daily falls: 17.4 millimetres (0.7 ins.) on the 24th, 10.8 millimetres (0.4 ins.) on the 26th, 46 millimetres (1.8 ins.) on the 27th, 23.8 millimetres (0.95 ins.) on the 28th, 11 millimetres (0.4 ins.) on the 29th, and 16.8 millimetres (0.7 ins.) on the last day of the month.  

 

Hail

No hail was observed in this part of Shoreham.  

 

Thunder

No thunder was heard in this part of Shoreham.

 

Snow

 

There was no sleet or snow observed in this part of Shoreham.

 

Wind

 

Although the first half of October was mostly anticyclonic with winds lighter than average for a mid-autumn month, the second half of  October was decidedly cyclonic, resulting in the average pressure for the month some 7mb below the average.  The net effect was to have  southwesterly winds dominant, accounting for around half of the daily readings, but with a mixture of winds after mid month as fronts, and occasionally depressions, tracked across southern Britain.  Overall, it was less windy than an average October.  At Shoreham Airport,   the first gusts above 30 knots (34 mph) did not occur until the morning of the 13th, when southwesterly winds increased and peaked at 39 knots (44 mph) in the late morning. Increasing east to southeasterly winds on the afternoon of the 18th gusted to 35 knots (40 mph) in the early evening, before veering southwesterly and gusting to 41 knots (47 mph) in the late evening.  Southwesterly gusts of 33 knots (38 mph) occurred on the morning of the 21st, and there then followed a windy end to the month. On the 28th, south to southwesterly gusts peaked at 35 knots (40 mph) in the late evening, followed by southwesterly gusts up to 39 knots (44 mph) on the following morning. A gust of 33 knots (38 mph)  in  the early hours of the 30th was the last significant gust of the month.

 

 

Fog

 

There was early fog at the airport on the morning of the 10th, and mist enveloped the hills on the morning of the 11th.

 

Statistics for October 2023

 

Reporting Site Highest Temp Lowest Temp Rain Total (mm) Wettest Rain days
Shoreham A/P 22.0 2.3 * * 15
Thorney Island 22.5 3.3     20
Gatwick A/P 25.3 -1.4     17
Herstmonceux 23.5 2.4     15
Bournemouth (Hurn) 23.1 0.0     18
Middle Wallop 23.6 -0.3     19
Dieppe 27.5 2.0 91 19 19
  • Rainfall totals unreliable for all stations
Posted on

Weather in Shoreham – September 2023

                                                      Extremely Warm

Temperatures

The average maximum temperature during September 2023 in Shoreham was 23.6 Celsius (74F), and that was over 3 degrees Celsius (5.5F) above normal for the time of year.  The average minimum temperature was 14.9 Celsius (59F), which was around 3 degrees Celsius (5.5F) above the September  average. September 2023 was a truly remarkable month.  It was the warmest September in the area for at least 143 years, beating the previous warmest (2006) by over a degree Celsius (2F).   Although the mean maximum temperature was 0.1 Celsius (0.2F) lower than that of June, the mean minimum temperature was 1.1 Celsius (2F) higher, so overall it was warmer than June 2023, a month in itself that was the warmest since before 1880. September was warmer than both July and August this year by a margin of  1.5 Celsius (2.7F) in each month. It is not unprecedented for September to be the warmest month of the year, but it is an extremely rare occurrence.  

The highest temperature recorded during the month was 30.8 Celsius (87F) on the 9th, with 30.6 Celsius (87F) recorded on the 5th. Both days, along with the 29.7 Celsius (85F) that occurred on the 7th, were higher than the previous warmest day of the year,  was the 13th of June when 29.6 (85F) was measured.  In 143 years of records close to the West Sussex coast,  the previous record September high was 28.6 Celsius (83F) on the 15th in 2020. In 2023, this record was beaten on a total of 6 occasions.  The extreme heat was confined to the first 16 days of the month, where 9 days had highs above 25 Celsius (77F), and a further 3 days had maxima above 24 Celsius (75F). Although the last fortnight of September was less warm, there were nevertheless 10 days with maxima above 20 Celsius (68F), including each of the last 7 days of the month. Only 4 days had maxima below the monthly average of 20 Celsius (68F), with 3 of those days having highs under 19 Celsius (66F). All of the cooler days occurred between the 19th and 23rd, with maxima of 18.6 Celsius (65F) on the 19th and 18.8 Celsius (66F) on the 23rd, the coolest days of the month. 

There were no record-breaking warm nights during September, but the temperature only fell to 18.4 Celsius (65F) on the 7th, and to 18.1 Celsius (64F) on the 9th. A further 4 nights had minima between 17 and 18 Celsius (63-64F) with all of these warmer nights occurring between the 6th and 12th. Many nights (14) had lows between 14 and 17 Celsius (57-63F), but several cooler nights occurred, mainly after mid month.  The coolest nights during the first half of September were 12.5 Celsius (55F) on the 14th, and 10.8 Celsius (51F) on the 15th, but the second half of September had 4 nights with minima below 12 Celsius (54F), including  2 nights with lows under 10 Celsius (50F). On the 22nd, a minimum of 9.8 Celsius (50F) occurred, with 7.8 Celsius (46F) recorded on the 23rd.  

The sea temperature ranged between 18 and 21 Celsius (64-70F), with the highest  readings occurring at the beginning of the second week.

 

Frost

 

There were no air or grass frosts during September. The lowest grass temperature was 6.1 Celsius (43F) on the 23rd. 

 

Rain

 

Rainfall in September amounted to 52.8 millimetres (2.1 ins.),  which was around 15% below the monthly average.  Measurable rain fell on 10 days, which was 2 days below the average, and  wet days (when 1 millimetre (0.04 ins.), or more, of rain falls) numbered 6, which was also 2 days below the average. The rain and drizzle early on the 1st fell before 10 am and, as such, was part of the August total. Otherwise, the first half of September was dry apart from 0.2 millimetres (0.01 ins.) of dew that tipped the gauge on the 13th.  The 17th was the start of a very unsettled spell of weather. Heavy bursts of rain on the 17th produced a total of 14.2 millimetres (0.56 ins.) with heavy showers on the following accumulating another 8.8 millimetres (0.35 ins.). Showers, or longer spells of rain, fell over the following 3 days, giving totals of 15.2 millimetres (0.6 ins.)  on the 20th and 9.8 millimetres (0.39 ins.) on the 21st. During the rest of the month, although rather unsettled with rain falling on 4 days, the total during this period was only 2.2 millimetres (0.09 ins.), with the wettest day, the 28th, having just 1.0 millimetres (0.04 ins. of rain.  

 

Hail

No hail was observed in this part of Shoreham.  

 

Thunder

Thunder occurred on  1 day during September. On the 17th, there were thunderstorms around lunchtime and briefly in the late evening.

 

Snow

 

There was no sleet or snow observed in this part of Shoreham.

 

Wind

 

Although southwesterly winds were dominant during September, accounting for over 30% of the month’s total, the winds were often light in the early part of the month, and frequently interspersed by winds from a northeasterly direction. During the third week, it was cyclonic and often windy, but thereafter, pressure rose and it generally became less windy. At Shoreham Airport,   the first gusts above 30 knots (34 mph) did not occur until late morning on the 18th, the west-southwesterly wind peaking at 37 knots (42 mph) in the early afternoon. The 19th was windy all day with southwesterlies gusting to 41 knots (47 mph) in the early afternoon. After a slight lull in the evening,  a gust of 39 knots (45 mph) occurred in the early hours of the 20th. The 20th stayed windy until late evening, but no further gusts above 30 knots (34 mph) occurred until late evening on the 27th when 33 knots (38 mph) was measured from the southwest, with a similar value gust occurring early on the 28th. No further significant gusts   occurred during the remainder of the month.   

 

Fog

 

There was no fog observed in this part of Shoreham.

 

Statistics for September 2023

 

Reporting Site Highest Temp Lowest Temp Rain Total (mm) Wettest Rain days
Shoreham A/P 29.4 6.9 65 34 10
Thorney Island 29.0 7.7 71 30 10
Gatwick A/P 32.7 6.7 72 24 10
Herstmonceux 31.2 7.5 61 18 9
Bournemouth (Hurn) 29.5 4.9     13
Middle Wallop 30.7 11.4     16
Dieppe 32.3 9.7 58 17 14
  • Rainfall totals unreliable for all stations
Posted on

Weather in Shoreham – August 2023

                                                     Rather Cool and Damp

Temperatures

The average maximum temperature during August 2023 in Shoreham was 21.6 Celsius (71F), and that was around 1 degree Celsius (<2F) below normal for the time of year.  The average minimum temperature was 14.1 Celsius (57F), which was close to the August average. 

The highest temperature recorded during the month was 25.4 Celsius (78F) on the 16th, with 25.3 Celsius (78F) recorded on the 17th. There were only 4 other days, the 10th, 18th, 23rd and 24th,   when the temperature rose above 23 Celsius (73F). On most days (21) the maximum temperature ranged between 20 and 23 Celsius (68-73F),  in fact, only 4 days had maxima below 20 Celsius (68F). Highs of 18.4 Celsius (65F), 18.7 Celsius (66F) and 18.4 Celsius (65F) occurred on the 2nd, 5th and 8th respectively. However, the coolest day of the month was the 31st,  when the temperature only reached 15.8 Celsius (60F). 

There were no especially warm nights during August, although the minimum was 17.9 Celsius (64F) on the 19th and 17.4 Celsius (63F) on the 18th. A further 9 nights had lows ranging from 15 to 17 Celsius (59-63F), but the majority of August nights had lows ranging from 11 to 15 Celsius (52-59F). There were 2 exceptions. On the 8th, a low of 10.7 Celsius (51F) occurred,  but the coolest night of the month was on the 27th when 10.2 Celsius (50F) was recorded.  

The sea temperature was around 19 Celsius (66F) throughout the month.

 

Frost

 

There were no air or grass frosts during August. The lowest grass temperature was 6.7 Celsius (44F) on the 27th. 

 

Rain

 

Rainfall in August amounted to 69.8 millimetres (2.7 ins.),  which was very slightly above the monthly average.  Measurable rain fell on 18 days, which was 6 days above the average, and  wet days (when 1 millimetre (0.04 ins.), or more, of rain falls) numbered 12, which was 4 days above the average. The first rain of the month occurred on the evening of the 1st and lasted through most of the following day. A total of 15.2 millimetres (0.6 ins) of rain fell, evenly split between the 2 days (7.6 millimetres each). The 3rd was dry, but rain fell on the 4th, and a further 8.8 millimetres (0.35 ins.) were added to the monthly total on the 5th. Although only 4 completely dry days occurred between the 6th and 16th, amounts of rain were small with a total for this period of only 3 millimetres (0.12 ins.). Rain overnight on the 17th, and further rain on the 18th, produced 4.2 millimetres (0.17 ins.) and 6.8 millimetres (0.27 ins.) respectively on those 2 days. It was dry between the 19th and 22nd, but changeable weather soon followed, and on the24th there were 8.6 millimetres (0.34 ins.) of rain. The wettest day in  August was the last day of the month,  when rain and drizzle occurred through most of the day adding another 13.8 millimetres (0.54 ins.) to the monthly total.  

 

Hail

No hail was observed in this part of Shoreham.  

 

Thunder

Thunder occurred on  2 days during August. On the 24th, the first thunder was heard early in the afternoon, and further storms occurred through the rest of the afternoon and early evening with several ground strikes reported in, and around, Shoreham. A further short-lived storm occurred around midnight on the 25th.

 

Snow

 

There was no sleet or snow observed in this part of Shoreham.

 

Wind

 

August was another ‘westerly’ month with winds from between west and southwest dominant on 19 days, and easterlies largely absent apart from a brief spell just after mid month. On many days, especially early in the month, sea breeze enhancement of the southwesterlies, gave unpleasantly windy afternoons. At Shoreham Airport,   the 1st was breezy, but the 2nd was windier, with southwesterly gusts to 35 knots (40 mph) during the morning and early afternoon. The 5th was another windy day with southwesterly gusts peaking at 37 knots (42 mph) around midday. Although there were several breezy afternoons,  no further gusts above 30 knots (34 mph) occurred during the remainder of the month.   

 

Fog

 

There was fog for a while along the Adur valley on the morning of the 16th.

 

Statistics for August 2023

 

Reporting Site Highest Temp Lowest Temp Rain Total (mm) Wettest Rain days
Shoreham A/P 25.4 9.0 76 15 14
Thorney Island 24.2 10.1     17
Gatwick A/P 27.5 8.2 57 19 14
Herstmonceux 25.9 9.6     15
Bournemouth (Hurn) 24.4 6.7     14
Middle Wallop 25.7 8.5     16
Dieppe 28.0 11.6 62 14 17
  • Rainfall totals unreliable for all stations
Posted on

Weather in Shoreham – July 2023

                                                         Wet, Cool and Windy

Temperatures

The average maximum temperature during July 2023 in Shoreham was 21.2 Celsius (70F), and that was more than 2 Celsius (4F) below normal for the time of year.  The average minimum temperature was 14.4 Celsius (58F), which was less than 0.5 Celsius (<1F) below average for July.  Overall, it was the coolest July for 11 years. 

The highest temperature recorded during the month was 28.9 Celsius (84F) on the 7th, but the next warmest day was the 8th, with a high of 24.7 Celsius (76F), followed by the 1st and 10th,  with these days both having highs of 23.3 Celsius (74F). Only 2 more days had maxima above 22 Celsius (72F),  with the vast majority of days having highs ranging from 19 to 22 Celsius (66-72F). There were  3 exceptions, these all occurring during the last week of the month.  On the 27th, a maximum of 18.3 Celsius (65F) occurred, with 18.5 Celsius (65F) and 18.4 Celsius (65F), on the 30th and 31st respectively. 

There were no especially warm nights during July, although the temperature on the 8th only fell to  19.8 Celsius (68F), and for much of that night the temperature stayed between 22 and 24 Celsius (72-75F).  The next warmest night was on the 28th with a low of 17.4 Celsius (63F),  but there were a further 13 nights with minimum temperatures above 15 Celsius (59F).  The remainder of the nights had minima between 11 and 15 Celsius (52-59F) but 4 exceptions occurred. The 5th, 7th and 18th each had minima between 10 and 11 Celsius (50-52F), but the 26th had a low of 9.4 Celsius (49F), making it the coolest night of the month.  

The sea temperature was 18 or 19 Celsius (64-66F) throughout the month.

 

Frost

 

There were no air or grass frosts during July. The lowest grass temperature was 6.1 Celsius (43F) on the 26th. 

 

Rain

 

Rainfall in July amounted to 88.4 millimetres (3.5 ins.),  which was around double  the monthly average.  It was the wettest July in  the area since 2012. Measurable rain fell on 14 days, which was 5 days above the average, and  wet days (when 1 millimetre (0.04 ins.), or more, of rain falls) numbered 8, which was 1 day above the average. The first 2 days of the month were dry, but light showers on the 3rd gave 0.2 millimetres  (0.01 ins.), followed by heavier showers and some more prolonged rain on the 4th which yielded 8.4 millimetres (0.3 ins.).  Showery bursts of rain gave 4.6 millimetres (0.2 ins.) on the 8th, and heavier rain on the 14th produced 11.4 millimetres (0.45 ins.) No significant rain fell during the following week,  but heavy rain and drizzle occurred at times on the 22nd to give a total of 20.0 millimetres (0.79 ins.). Although some dry weather occurred, the remainder of the month was changeable and, at times, wet. On the 24th, rainfall amounted to 6.4 millimetres (0.25 ins.) , and another 28 millimetres  (1.1 ins.) were measured on the 26th. Further, mostly light, rain fell during the rest of the month. On the 30th  5.4 millimetres (0.2 ins.) were measured, with 3 millimetres (0.12 ins.) on the last day of July.  

 

Hail

No hail was observed in this part of Shoreham.  

 

Thunder

Thunder occurred from around mid morning until early afternoon on the 8th, although amounts of rain associated with the storm cells were mainly small.

 

Snow

 

There was no sleet or snow observed in this part of Shoreham.

 

Wind

 

Apart from 2 days during the first week, winds during July blew from between southwest and northwest,  and southwesterly winds outnumbered the northwesterlies by a ratio of 2 to 1.  Winds were unusually strong for the time of year, and even on fine days, fresh or strong sea breezes occurred on many afternoons. At Shoreham Airport, southwesterly winds gusted to 37 knots   (42 mph) in the afternoon on  the 3rd, with gusts to 31 knots (35 mph) from a similar direction on the afternoon of the 5th. Although, breezy on  most afternoons, the next gusts above 30 knots (34 mph) did not occur until the 12th, when 32 knots (36 mph) were recorded during the afternoon. A gust of 33 knots (38 mph) occurred on the evening of the 14th, with 43 knots (49 mph) on the following evening, again from the southwest. The strong winds continued into the 16th with 36 knots (41 mph) occurring in the early hours. Southwesterly winds gusted above 30 knots (34 mph) during the afternoon and evening on the 22nd, peaking at 36 knots (41 mph) at midnight.    It remained breezy, but gusts stayed below 30 knots (34 mph) until the 27th, when overnight gusts reached 32 knots (37 mph). The  29th was mostly sunny, but the southwesterly sea breeze spoiled the  day, with gusts in the afternoon reaching 31 knots (35 mph). The windy theme continued until the end of the month with gusts reaching 34 knots (39 mph) in the evening of the 30th,   and 35 knots (40 mph) in the early hours of the 31st.   

 

Fog

 

It was often  misty with low cloud covering hill tops in association with the drizzly spells.

 

Statistics for July 2023

 

Reporting Site Highest Temp Lowest Temp Rain Total (mm) Wettest Rain days
Shoreham A/P 27.1 8.6 94 32 18
Thorney Island 26.6 9.4 99 31 18
Gatwick A/P 29.8 7.1 102 27 21
Herstmonceux 29.8 8.7 117 32 17
Bournemouth (Hurn) 26.4 6.7 127 24 19
Middle Wallop 27.4 8.5 131 24 20
Dieppe 30.2 11.1 110 22 22
  • Rainfall totals unreliable for all stations
Posted on

Weather in Shoreham – June 2023

                                                  Exceptionally Warm

Temperatures

The average maximum temperature during June 2023 in Shoreham was 23.7 Celsius (75F), and that was around 3 Celsius (5.5F) above normal for the time of year.  The average minimum temperature was 13.8 Celsius (57F), which was close to 1 Celsius (2F) above average for June. Overall, it was the warmest June since before 1880, surpassing the previous record, set in 1976, by more than 1 degree Celsius (2F) 

The highest temperature recorded during the month was 29.6 Celsius (85F) on the 13th, but there were 8 other days with maxima above 25 Celsius (77F), including highs of 29.0 Celsius (84F) on the 10th and 28.6 Celsius  (83F) on the 14th. Most of the very warm days occurred between the 9th and 17th. The only exception was on the 25th,  when a high of 26.6 Celsius (80F) was recorded. On most other days (19) the maximum temperature ranged from 20 to 25 Celsius (68-77F). However, there were 2 days when the temperature failed to reach 20 Celsius (68F).  The maximum on the 2nd was 19.2 Celsius (67F), and on the 30th it was 19.4 Celsius (67F). 

There were no especially warm nights during June, although on 11 nights the minimum temperature was above 15 Celsius (59F). The warmest night was the 28th with a low of 18.0 Celsius (64F), but 17.3 Celsius (63F) was recorded on the 18th, with 17.2 Celsius (63F) occurring on the 11th. A total of 11 nights had minima between 12 and 15 Celsius (54-59F) and there were 8 rather cool nights, these occurring on the first 8 nights of the month. On 5 of these nights the minimum was between 10 and 11 Celsius (50-52F), but on the 5th a low of 8.9 Celsius (48F) was recorded, with 9.2 Celsius (49F) and 9.7 Celsius (50F) on the 3rd and 6th respectively.  

The sea temperature was 15 Celsius (59F) at the beginning of June, rising to 19 Celsius (66F) by the fourth week, before decreasing slightly at the end of the month.

 

Frost

 

There were no air or grass frosts during June. The lowest grass temperature was 7.2 Celsius (45F) on both  the 5th and 6th. 

 

Rain

 

Rainfall in June amounted to 39.4 millimetres (1.55 ins.),  which was around 20% below  the monthly average.  Measurable rain fell on only 6 days, which was 5 days below the average, and  wet days (when 1 millimetre (0.04 ins.), or more, of rain falls) numbered 4, which was 4 days below the average. The first rain of the month occurred on the 11th, and in the afternoon  there was just enough to be measured. The 0.2 millimetres (0.01 ins.) that fell was the first significant rain since 12th May, a total of 30 days. No more measurable rain fell until the 17th resulting in less than 1 millimetre (0.04 ins.)  of rain  between the 8th May and 17th June, a total of 40 days. The rain on the 17th mostly occurred in the evening and overnight, and amounted to 3.4 millimetres (0.13 ins.). Rain  on the afternoon of the 18th added another 5.6 millimetres  (0.22 ins.)  to the total, but the following night produced the heaviest rain of the month.  After dawn on the 20th,  torrential rain produced 27.2 millimetres (1.07 ins.), with  26.8 millimetres (1.05 ins.) falling  in  one hour. That hour, between 0600 and 0700 , had a peak rainfall rate of 43 millimetres (1.7 ins.) per hour. The heavy rain was followed by 7 dry days, but the month ended with a little rain,  giving totals of 2.4 millimetres (0.09 ins.)  and 0.6 millimetres (0.02 ins.) on the 28th and 30th respectively.  

 

Hail

No hail was observed in this part of Shoreham.  

 

Thunder

There were 3 days with thunder during June. On the 10th there was lightning to the south in the evening, but no thunder was heard. Thunderstorms, albeit quite distant, occurred late in the evening on the 17th, with one rumble of thunder in the early hours of the 18th. The last thunder of the month preceded, and was in association with, the heavy rain early in the morning on the 20th.

 

Snow

 

There was no sleet or snow observed in this part of Shoreham.

 

Wind

 

Brisk winds from between northeast and northwest occurred on each day until the 9th, with night-time winds falling light. Winds were generally light and variable during the following 2 weeks, with gentle southeast or southwest sea breezes on several afternoons. The last week of the month was characterized by more typical early summer weather with southwesterly winds dominant, with these occasionally moderate or fresh in the afternoons. At Shoreham Airport, although gusts exceeded 20 knots (23 mph) on  many afternoons early and late in the month, the only gusts above 30 knots (34 mph) occurred on the last day of June. In the afternoon of the 30th, southwesterly gusts peaked at 32 knots (37 mph).      

 

Fog

 

It was often  misty following the thunderstorms during the third week of June, and on the morning of the 19th there was sea fog.

 

Statistics for June 2023

 

Reporting Site Highest Temp Lowest Temp Rain Total (mm) Wettest Rain days
Shoreham A/P 28.4 8.2 37 21 5
Thorney Island 27.5 9.0 25 12 5
Gatwick A/P 31.6 7.4 82 29 8
Herstmonceux 31.4 8.9 52 30 7
Bournemouth (Hurn) 30.1 7.4 38 26 6
Middle Wallop 30.1 7.6 49 32 8
Dieppe 31.5 10.8 * * 10
  • *Data missing
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