Shoreham Weather

Dry and Rather Mild

Temperatures

The average maximum temperature during December 2024 in Shoreham was 9.4 Celsius (49F), and that was 0.2 Celsius (<0.5F) above normal. The average minimum temperature was 6.3 Celsius (43F), and that was  1 Celsius (<2F) above the December normal.

The highest temperature recorded during the month was 13.3 Celsius (56F) on both the 1st and the 5th, but 13.0 Celsius (55F) was recorded on the 18th, and a further 11 days had maxima above 10 Celsius (50F). Most of these milder days occurred in the first week of December (5), and between the 15th and 25th (8). On most other days the maximum temperature ranged from 7 to 10 Celsius (45-50F). In fact, only 4 days had maxima below 7 Celsius (45F). On the 10th, a high of 6.7 Celsius (44F) was measured, with 4.5 Celsius (40F) occurring on the 13th. Highs of 5.4 and 5.9 Celsius (41-42F) occurred on the 28th and 29th respectively.       

There were no exceptionally mild nights during December, but a minimum of 11.7 Celsius (53F) occurred on the 1st, and lows of 10.2 Celsius and 10.1 Celsius (50F) were recorded on the 5th and 18th respectively. On most nights (16) the minimum temperature ranged from 4 to 7 Celsius (39-45F) and on a further 2 nights, the 14th and 28th, it ranged between 3 and 4 Celsius (37-39F). Only 3 colder nights occurred. A low of 1.8 Celsius (35F) occurred on the 4th, and 2.8 Celsius (37F) was recorded on the 15th. However, the coldest night of the month was the 20th, with a low of 0.7 Celsius (33F).   

The sea temperature ranged from 9 to 11 Celsius (48-52F) throughout the month.

Frost

There were no air frosts in December, and that was 4 below average. Slight grass frost occurred on 4 nights, which was 6 below average. The minimum grass temperature on both the 16th and 21st was minus 0.6 Celsius (31F), with minus 1.1 Celsius (30F) occurring on the 4th. The lowest grass temperature was minus 2.8 Celsius (27F), measured on the morning of the 20th.

Rain

Rainfall during December amounted to 52.6  millimetres (2.1 ins.), which was around half the monthly average. Measurable rain fell on 20 days, which was normal for December, and wet days (when 1 millimetre (0.04 ins.), or more, of rain falls) numbered 12, which was 3 days below the average.  The month began wet, with 1.4 millimetres (0.05 ins.) measured on the 1st. The 3rd was the only completely dry day during the first 13 days of the month. However, daily totals were mostly small, with only 2 days having falls above 5 millimetres (0.2 ins.). On the 4th, there were 14.6 millimetres (0.57 ins.) of rain, and on the 9th a fall of 10.6 millimetres (0.42 ins.) occurred. Both of these falls were somewhat surprising as the pressure readings for the day were fairly high, with evening readings of 1023 and 1031 millibars respectively. The 14th and 15th were completely dry days, and although further rain fell at times during the month, only 4 daily values were above 1 millimetre (0.04 ins.). The highest of these was 3.2 millimetres (0.13 ins.) on the 20th. Overall, it was a dry end to the year, with just 13.8 millimetres (0.54 ins.) of rain falling between the 10th and the end of the month.  

Hail

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

Thunder

No thunder was heard in this part of Shoreham during December.

Snow

No sleet or snow fell in Shoreham during the month.

Wind

High pressure dominated during December with the average pressure some 10 millibars above normal. Generally, the centres of high pressure were over, and to the west of, the British Isles, with winds having a westerly component dominating. There were some windy spells, these more especially around the end of the first week, and during the third week of December. At Shoreham Airport, southwesterly winds gusted to 32 knots (37 mph) in the early hours, and to 37 knots (42 mph) during the evening of the 5th. Brisk southwesterly winds featured again on the evening of the 6th, with a peak of 38 knots (43 mph) at midnight. The wind then veered westerly with several gusts above 40 knots (46 mph), and one of 51 knots (58 mph) between 0900 and 1000 hours on the 7th. The wind veered northwesterly through the remainder of the 7th, but gusts of over 40 knots (46 mph) continued. Overnight into the 8th, the wind veered northerly, and after a gust of 42 knots (48 mph) between 0800 and 0900 hours, the wind slowly decreased in strength. The 18th was a breezy day, with southwesterly gusts reaching 34 knots (39 mph), with further gusts to 34 knots (39 mph) in the early hours of the 19th. There was a gust of 31 knots (35 mph) from the west-southwest late in the afternoon on the 21st, and northwesterly gusts rose to 34 knots (39 mph) during the early afternoon of the 22nd. A further peak of 41 knots (47 mph) occurred in the late evening. The northwesterly wind then decreased from a high of 34 knots (39 mph) that occurred just after mid night. Winds then became much lighter for a while, but the brisk southwesterlies returned on the 31st, with several gusts to 37 knots (42 mph) during the evening.

Fog

There was fog in this part of Shoreham on the morning of the 24th, with further mist and hill fog occurring at times during the last week. Notably, on the afternoon and early evening of the 29th.

Statistics for December 2024

Reporting Site	Highest Temp	Lowest Temp	Rain Total (mm)	Wettest	Rain days
Shoreham A/P	13.5	-0.4			20
Thorney Island	13.7	0.0			15
Gatwick A/P	13.6	-2.5			20
Herstmonceux	13.6	0.0			20
Bournemouth (Hurn)	14.6	-1.6			18
Middle Wallop	14.5	-1.6			18
Dieppe	15.2	-1.2	48	9	21

• Rainfall totals unreliable for all English station

                                              Changeable and Rather Mild

Temperatures

The average maximum temperature during October 2024 in Shoreham was 16.7 Celsius (62F), and that was around 1 Celsius (1.8F) above the long-term average, but near average for the last 10 years. In fact,  average  day-time temperatures during October were the 16th highest in the area since 1880. The average minimum temperature was 10.8 Celsius (51F), and that was over 1 Celsius (<2F) above the long-term October normal, but nearer 0.5  Celsius (1F) above normal compared with short-term averages.   Night-time temperatures in the area were the 14th highest since 1880.

The highest temperature recorded during the month was 20.7 Celsius (69F) on the 16th, with the second highest 19.3 Celsius (67F) on the 7th. A further 4 days had maxima above 18 Celsius (64F), with all of these milder days occurring before the 20th. On most other days (19) the highest temperature ranged from 15 to 18 Celsius (59-64F). On 6 days the temperature failed to reach 15 Celsius (59F), but only 2 of these cooler days had highs below 14 Celsius (57F). The 10th had a maximum of 13.0 Celsius (55F), and the 13th had a high of 11.8 Celsius (52F).       

There were no exceptionally mild nights during October, but the 16th had a low of 15.8 Celsius (60F), and 3 nights, the 8th, 17th and 19th, had minima above 14 Celsius (57F). A further 5 nights had minima above 13 Celsius (55F). Only 10 nights had minimum temperatures below 10 Celsius (50F), with 6 of these cooler nights occurring before mid month. Only 3 of these nights had lows  under 6 Celsius (43F). On the 4th, a minimum of 4.8 Celsius (41F) occurred, with 5.2 and 5.8 Celsius (41-42F) occurring on the 11th and 22nd respectively.   

The sea temperature, around 17 or 18 Celsius (63-64F) at the beginning of October,  slowly decreased to 15 Celsius (59F) by the end of the month.

 

Frost

 

There were no frosts in October. The lowest grass temperature was 1.1 Celsius (34F),  on the 4th. 

 

Rain

 

Rainfall during October amounted to 100.0  millimetres (3.9 ins.), which was around 30% above the long-term average, but 20% below the short-term average. Measurable rain fell on 21 days, which was 2 days above the average, and wet days (when 1 millimetre (0.04 ins.), or more, of rain falls) numbered 17, which was  4 days above the average.  Showery rain produced 1.4 millimetres (0.06 ins.) on the 1st, but no measurable rain fell on the following 4 days. Rain and drizzle during the afternoon  and evening of the 6th,  heralded a spell of very unsettled weather. In fact, there were no completely dry days between the 6th and 23rd inclusive, although on 1 day, the 17th, the 0.4 millimetres (0.02 ins.) that was measured,  was the result of a heavy dew and wet fog. On many days during this changeable spell, precipitation was light, but daily totals between 4 and 7 millimetres (0.16 and 0.28 ins.) occurred on the 7th, 19th, 20th, 21st and 22nd, with 7.8 and 7.4 millimetres (0.31 and 0.29 ins.) on the 16th and 18th respectively. The highest rainfall totals occurred on 2 days. On the 8th, there were many heavy showers, these leading to a total of 16.2 millimetres (0.64 ins.) for the day. Heavy rain overnight on the 13th/14th produced the wettest day of the month, with 18.6 millimetres (0.73 ins.) recorded in the 24 hours ending at 0900 UTC. on the 14th.  

 

Hail

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

 

Thunder

There was just 1 rumble of thunder heard in this part of Shoreham during October. This was late in the evening on the 8th.

 

Snow

 

No sleet or snow was observed in Shoreham.

 

Wind

 

Although October was an unsettled month, the deepest depressions stayed well away from southern England, except for a time at the end of the first week. As a result,  winds were generally much lighter than in an average October. Southwesterly winds were dominant, but only just, with winds also blowing from southeasterly and northwesterly directions, these each accounting for 20% of the daily observations. At Shoreham Airport, southwesterly gusts reached 33 knots (38 mph) on the evening of the 8th, with 31 knots (35 mph) from the same direction at midnight.  The only other gusts above 30 knots (34 mph) during October,  occurred around lunchtime on the 20th, when southwesterly gusts peaked at 35 knots (40 mph).

 

 

Fog

 

There were several drizzly, misty spells with hill fog, and on the 17th there was overnight fog, but this had cleared by mid morning.

 

Statistics for October 2024

 

Reporting Site	Highest Temp	Lowest Temp	Rain Total (mm)	Wettest	Rain days
Shoreham A/P	19.6	3.1			21
Thorney Island	20.0	4.4			22
Gatwick A/P	21.9	1.8			21
Herstmonceux	21.7	1.8			22
Bournemouth (Hurn)	18.2	1.4			17
Middle Wallop	18.5	1.5			18
Dieppe	24.4	4.0	68	13	19

• Rainfall totals unreliable for all English stations

                                                                       Very Wet

Temperatures

The average maximum temperature during September 2024 in Shoreham was 19.7 Celsius (68F), and that was around 1 Celsius (1.8F) above the long-term average, but nearly 1 degree Celsius  (1.8F) below the average for the last 10 years. In fact,  average  day-time temperatures this September were the 29th highest in the area since 1880, but it was also the coolest September for 6 years. The average minimum temperature was 12.4 Celsius (54F), and that was around 1 Celsius (<2F) above the long-term September normal, but near normal compared with short-term averages.    

The highest temperature recorded during the month was 29.3 Celsius (85F) on the 1st, but the second highest was only 25.0 Celsius (77F) on the 19th. A further 2 days had maxima over 23 Celsius (73F). Both the 20th and 21st had a high of 23.9 Celsius (75F). There were 2 rather warm spells in September. From the 1st to 4th inclusive, and from the 18th and 21st inclusive, temperatures rose above 20 Celsius (68F). Just 1 other day, the 8th, with a high of 20.9 Celsius (70F), had a maximum temperature above 20 Celsius (68F). Most other maxima ranged from 15 to 20 Celsius (59-68F), On 5 of these cooler days the temperature failed to rise above 17 Celsius (63F), including the last 3 days of the month. There was just 1 day, the 27th, when the temperature stayed below 15 Celsius (59F). On that day, the temperature peaked at 13.7 Celsius (57F).       

There were several warm nights during September, these mainly occurred during the first and third weeks of the month. On the 2nd, a minimum of 18.3 Celsius (65F) occurred, with 17.0 Celsius (63F) recorded on the following night.  A further 6 nights had lows above 15 Celsius (59F), including the 1st, 19th and 22nd with lows of 16.6, 16.5 and 16.1 Celsius (62-61F) respectively. On most other nights the minimum temperature ranged from 10 to 15 Celsius (50-59F). There were 8 exceptions. Both the 28th and 29th had minima of 6.9 Celsius (45F), but all the other cool nights occurred between the 10th and 15th. Only 2 of these nights had a temperature below 7 Celsius (45F). A minimum of 5.9 Celsius (43F) was measured on the 13th, but the coolest night of the month was the 14th,  when 4.7 Celsius (40F) was recorded.   

The sea temperature was 19 or 20 Celsius (66-68F) at the beginning of September, but fell to 18 Celsius (64F) during the second week, and to 17 Celsius (63F) at times during the last week of the month.

 

Frost

 

There were no frosts in September. The lowest grass temperature was 1.1 Celsius (34F),  on the 14th. 

 

Rain

 

Rainfall in September amounted to 158.3 millimetres (6.2 ins.), which was around 2.5 times  the monthly average. Locally, it appears to be the 4th wettest September since records began in 1880. In recent years, the Septembers of 1976 and 1999 had comparable amounts of rain, but the Septembers of both 1974 and 1975 were both wetter. 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 13, which was also 6 days above the average.  Although the 1st was dry during the day, rain fell overnight, and further rain fell during the 2nd leading to a total for the day of 6.8 millimetres (0.27 ins.). Heavy rain fell at times on both the 5th and 6th,  leading to daily totals of 25.4 millimetres (1 in.) and 11.2 millimetres (0.44 ins.) respectively. Thereafter, rainfall was less intense for a while. Although 4.6 millimetres (0.18 ins.) of rain fell on the 10th, the period between the 7th and 19th only yielded  7.4 millimetres (0.29 ins.) of rain. In fact,  no measurable rain fell between the 12th and 19th. Rain returned on the night of the 20th, and, at times, it was heavy. A total of 9.6 millimetres (0.38 ins.) on the 21st, was followed by 13.8 millimetres (0.54 ins.) on the 22nd. Worse was to follow, as a fall of 7.8 millimetres (0.31 ins.) on the 25th was followed by a very wet day and night on the 26th. The total for the day was 41.4 millimetres  (1.63 ins.). This was one of the heaviest daily falls in  recent years, but there was still more to come. Heavy overnight rain on the 29th/30th produced a further 21.3 millimetres (0.84 ins.) of rain.  

 

Hail

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

 

Thunder

There were 3 days when thunderstorms occurred during September. On the 5th, there was thunder at times from early to mid afternoon. Showery outbreaks of rain were accompanied by thunder after dawn on the 6th; and lightning and thunder occurred in the early hours of the 21st.

 

Snow

 

No sleet or snow was observed in Shoreham.

 

Wind

 

September was the first month this year that was not a ‘southwesterly month’. Winds from that direction only accounted for around 15% of the daily observations. Northwesterly predominated, but only with around 35% of the monthly total. Northeasterly winds occurred on over 25% of the days, with the remaining days of the month having variable winds. Overall, winds were lighter than in an average September, with the lightest winds occurring at the beginning of the month, and for much of the third week. At Shoreham Airport, the only really windy day was the 26th. Southwesterly gusts peaked at 41 knots (47 mph) during the middle of the afternoon, followed by westerly winds that reached 35 knots (40 mph) in the early hours of the 27th. On the evening of the 29th, southeasterly winds exceeded 30 knots (34 mph) on several occasions, before veering south to southwesterly overnight. Highest gusts, spanning midnight, were 32 or 33 knots (36-38 mph).

 

 

Fog

 

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

 

Statistics for September 2024

 

Reporting Site	Highest Temp	Lowest Temp	Rain Total (mm)	Wettest	Rain days
Shoreham A/P	28.8	4.1			18
Thorney Island	28.5	4.6			18
Gatwick A/P	27.8	1.7			18
Herstmonceux	29.6	3.6			19
Bournemouth (Hurn)	26.2	0.7			20
Middle Wallop	26.9	3.0			20
Dieppe	24.7	4.8	109	44	18

• Rainfall totals unreliable for all English stations

                               Changeable and Rather Wet

Temperatures

The average maximum temperature during July 2024 in Shoreham was 22.0 Celsius (72F), and that was over 1 Celsius (2F) above the long-term average, but 1 degree Celsius (2F) below the average for the last 10 years. In fact, average  day-time temperatures this July were the 23rd highest since 1880. The average minimum temperature was 14.0 Celsius (57F), and that was less than 1 Celsius (<2F) below the July normal.    

The highest temperature recorded during the month was 30.8 Celsius (87F) on the 30th, but 29.7 Celsius (85F) was recorded on the 31st, with 27.9 Celsius (82F) occurring on the 29th. Only 2 other days had highs above 24 Celsius (75F). The 18th and 19th had highs of 25.9 and 26.1 Celsius (79F) respectively. Although many days (13) had maxima ranging from 20 to 23 Celsius (68-73F) , several cool days occurred, particularly early in July. On 10 occasions the temperature failed to reach 20 Celsius (68F), with 8 of the cool days occurring before mid-month. Only 3 days had maxima below 19 Celsius (66F). The 7th and 22nd both had highs of 18.8 Celsius (66F), but the maximum on the 25th was only 17.8 Celsius (64F).      

There were no particularly mild nights in July, but 18.1 Celsius (64F) was recorded on the 31st, with 17.2 Celsius (63F) occurring on the 21st, and 17.1 Celsius (63F) on the 30th. A further 6 nights had minima above 15 Celsius (59F), but the only fairly warm night before mid-month was the 10th with a low of 15.3 Celsius (60F). On most other nights the minimum temperature ranged from 12 to 15 Celsius (54-59F). There were 6 exceptions. Between the 11th and 15th there were 4 nights with minimum temperatures under 12 Celsius (54F). On the 27th a low of 11.7 Celsius (53F) occurred, but the only night with a minimum below 11 Celsius (52F) was the 8th,  when 10.3 Celsius (50F) was recorded.   

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

 

Frost

 

There were no frosts in July. The lowest grass temperature was 7.2 Celsius (45F) on the 8th. 

 

Rain

 

Rainfall in July amounted to 67.6 millimetres (2.66 ins.), which was around 35% above the monthly average. Measurable rain fell on 16 days, which was 6 days above the average, and wet days (when 1 millimetre (0.04 ins.), or more, of rain falls) numbered 10, which was 3 days above the average. After a dry opening day of the month, light rain and showers fell on the 2nd and 3rd. The 4th was dry,  but the 5th was a most unpleasant day with periods of rain and drizzle through most of the day. The heaviest rain occurred overnight with 14.6 millimetres (0.57 ins.) attributable to the 4th. On the 5th, a further 6.2 millimetres were measured. Rain or showers, interspersed  with brief sunny or clear intervals continued for the following week, A total of 8.0 millimetres (0.31 ins.) occurred on the 8th, but after the 9th amounts of rain were small.  The 13th and 14th were completely dry, but heavy rain on the evening of the 15th produced 19.2 millimetres (0.76 ins.), making it the wettest day of the month. No measurable rain fell between the 17th and 20th, and although a few changeable days followed, the only daily rainfall total above 1 millimetres (0.04 ins.) was the 5.2 millimetres (0.20 ins.)  that fell on the 25th. It was dry again between the 26th and 30th. In fact, the second half of July only received 8.8 millimetres (0.35 ins.), just 13% of the monthly total. 

 

Hail

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

 

Thunder

No thunderstorms were observed in this part of Shoreham during the month.

 

Snow

 

No sleet or snow was observed in Shoreham.

 

Wind

 

July was very much a southwesterly month with winds from that quadrant blowing on almost 80% of the days.  Other days were cyclonic or variable, but at the end of the month there were a few days when northeasterly winds dominated. Winds were mainly gentle or moderate, but quite strong at times during the first week.  At Shoreham Airport, southwesterly winds gusted to 33 knots (38 mph) late in the afternoon of the 4th and to 32 knots (37 mph) from a similar direction on the afternoon of the 5th. A westerly wind produced several gusts of 31 and 32 knots (35-36 mph) on the afternoon of the 6th, but no further gusts exceeded 30 knots (34 mph) during the remainder of the month. 

 

 

Fog

 

No fog was observed in this part of Shoreham during the month, although the 22nd was misty all day with low cloud capping the Downs at times.

 

Statistics for July 2024

 

Reporting Site	Highest Temp	Lowest Temp	Rain Total (mm)	Wettest	Rain days
Shoreham A/P	29.5	7.8	65	18	14
Thorney Island	29.2	9.3	114	22	16
Gatwick A/P	31.6	6.7	122	25	12
Herstmonceux	30.8	8.9	109	23	15
Bournemouth (Hurn)	30.9	7.4	101	27	13
Middle Wallop	30.8	7.5	79	21	12
Dieppe	30.9	10.9	45	8	16

• Rainfall totals unreliable for all English stations

                                                         Dry, and Chilly Nights

Temperatures

The average maximum temperature during June 2024 in Shoreham was 20.5 Celsius (69F), and that was over 1 Celsius (2F) above the long-term average, but 1 degree Celsius (2F) below the average for the last 10 years. In fact, it was the 15th warmest June in the area since 1880. Between 1940 and 2005 only the June of 1976 was warmer. The average minimum temperature was 11.3 Celsius (52F), and that was around 2 Celsius (3.5F) below the June normal.    

The highest temperature recorded during the month was 29.4 Celsius (85F) on the 25th, but 28.3 Celsius (83F) was recorded on the 26th. The next highest temperature was 23.7 Celsius (75F) on the 18th, although only the 28th, with a high of 19.9 Celsius (68F), failed to reach 20 Celsius (68F) during the rest of the month. Prior to the 18th, only 2 days, the 2nd and 3rd, had highs above 20 Celsius (68F). On these 2 days maxima were 21.7 and 21.8 Celsius (71F) respectively. On all other days, the maximum temperature ranged from 17 and 20 Celsius (63-68F) with the lowest value of 17.4 Celsius (63F) occurring on the 11th, 13th and 15th.      

There were no particularly mild nights in June. The highest minimum was 15.5 Celsius (60F) on the 26th, but 14.9 Celsius (59F) occurred on the 27th, and 14.2 Celsius (58F) occurred on both the 22nd and 24th. A further 11 nights had minima above 11 Celsius (52F), but only 3 of these less cool nights occurred before mid-month. On 10 nights the temperature fell below 10 Celsius (50F), but only 1 of these coolest nights occurred after mid-month. On the 20th a low of 9.3 Celsius (49F) was recorded. Only 4 nights, the 7th, 8th, 11th and 13th, had minima below 9 Celsius (48F), with just 1 of these nights, the 13th, dipping below 8 Celsius (46F). On the 13th, a minimum of 7.6 Celsius (46F) occurred.   

The sea temperature rose slowly from 15 Celsius (59F) at the beginning of June, to 17 Celsius (63F) around mid-month, to 18 or 19 Celsius (64-66F) during the last week of June.

 

Frost

 

There were no frosts in June. The lowest grass temperature was 3.3 Celsius (38F) on the 13th. 

 

Rain

 

Rainfall in June amounted to 18.6 millimetres (0.73 ins.), which was around 40% of the monthly average. Measurable rain fell on 6 days, which was 5 days below the average, and wet days (when 1 millimetre (0.04 ins.), or more, of rain falls) numbered 5, which was 2 days below the average. The first measurable rain of the month fell in the early hours of 10th, but only 1.2 millimetres (0.05 ins.) accumulated in the rain gauge. On the 13th, outbreaks of rain from late afternoon gave 3.6 millimetres (0.14 ins.), with 9.0 millimetres (0.35 ins.) falling on the 14th, and a further 2.8 millimetres (0.11 ins.) on the 15th. Apart from a mere 0.2 millimetres (0.01 ins.) on the 18th, the only other recordable rain during June occurred in the early hours of the 22nd, when 1.8 millimetres (0.07 ins.) were measured. 

 

Hail

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

 

Thunder

The only lightning and thunder observed in this part of Shoreham during June occurred at 2244 local time on the 14th.

 

Snow

 

No sleet or snow was observed in Shoreham.

 

Wind

 

Apart from brief interludes, mainly during the first and third weeks, winds almost always blew from within the southwest or northwest quadrants, and between them they accounted for over 80% of the daily observations. The strongest winds generally occurred during afternoons, and mainly in the first half of the month. At Shoreham Airport, the only day when gusts exceeded 30 knots (34 mph) was the 15th, when several  gusts from the southwest during the day were above 30 knots (34 mph). The peak gust of 39 knots (44 mph) occurred early in the afternoon. 

 

 

Fog

 

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

 

Statistics for June 2024

 

Reporting Site	Highest Temp	Lowest Temp	Rain Total (mm)	Wettest	Rain days
Shoreham A/P	27.1	4.6	20	9	6
Thorney Island	26.1	6.1	21	6	6
Gatwick A/P	29.6	3.3	24	8	7
Herstmonceux	29.4	4.9	20	8	8
Bournemouth (Hurn)	27.1	3.3	16	7	6
Middle Wallop	28.3	4.3	16	6	9
Dieppe	21.7	6.9	33	8	15

• Rainfall totals unreliable for all English stations

                                                             Cloudy and Wet

Temperatures

The average maximum temperature during April 2024 in Shoreham was 14.3 Celsius (58F), and that was close to the long-term average.  The  average minimum temperature was 7.6 Celsius (46F), and that was close to 1.5 Celsius (<3F) above the April normal. Only 1961, 2007 and 2018 appear to have had milder nights during April according to local records dating back to 1880.  

The highest temperature recorded during the month was 16.7 Celsius (62F) on both the 12th and 30th, but a further 4 days had maximum temperatures above 16.0 Celsius (61F). All of these milder days occurred before mid month. On most days (16), maximum temperatures ranged from 13 to 15 Celsius (55-59F), but there were 4 cooler days, with all of these occurring during the last 9 days of the month. On 3 occasions, the temperature failed to reach 12 Celsius (54F), with the lowest values,  of 11.7 and 11.1 Celsius (53 and 52F), occurring on the 24th and 26th respectively.   

The cloudy and breezy conditions that dominated the weather during April led to many mild nights. On the 6th, a minimum of 12.4 Celsius (54F) occurred, and a further 4 nights had minima above 10 Celsius (50F), including lows of 11.6 Celsius (53F) and 11.5 Celsius (53F) on the 5th and 11th respectively. All of these mildest nights occurred before the 13th. In fact, only 2 nights had minima below 8 Celsius (46F) before mid month, whereas after mid month only 1 night, the 29th, had a minimum temperature above 8 Celsius (46F). There were no particularly cold nights during April, although minima were below 4 Celsius (39F) on 5 occasions.  A low of 3.9 Celsius (39F) occurred on the 10th, and 3.4 Celsius (38F) was measured on both the 17th and 25th, but the lowest reading was 1.9 Celsius (36F) on  the 20th.   

The sea temperature slowly rose from 10 Celsius (50F) at the beginning of the month,  to between 11 and 12 Celsius (52-54F)  by the end of April.

 

Frost

 

There was no air frost during April, which was 1 frosty night below average.  Grass frost occurred on 4 nights, and that was 3 grass frosts below average. The 10th had a grass minimum of minus 1.1 Celsius (30F), with minus 1.7 Celsius (29F) recorded on both the 17th and 25th. The lowest grass temperature was minus 2.8 Celsius (27F) on the night of the 20th. 

 

Rain

 

Rainfall in April amounted to 58.6 millimetres (2.3 ins.),  which was around 50% above  the monthly average.   Measurable rain fell on 13 days, which was 5 days above the average, and  wet days (when 1 millimetre (0.04 ins.), or more, of rain falls) numbered 10, which was 6 days above the average. After a dry opening day of the month, rain began falling on the afternoon of the 2nd, with 14.2 millimetres (0.56 ins.) measured on the following morning. A further 5.8 millimetres (0.23 ins) fell on the 3rd, with 3.6 millimetres (0.14 ins.) and 3.8 millimetres (0.15 ins.) falling on the 4th and 8th respectively. Only 9 millimetres (0.35 ins.) of rain fell between the 9th and 24th, with the heaviest fall of 4.6 millimetres (0.18 ins.) occurring on the 15th. Even so, the sky was often cloudy. The last week of the month was wet for  a while, with 6 millimetres (0.24 ins.) falling on the 26th, and another 14.2 millimetres (0.56 ins.) on the 27th. No measurable rain fell on the last 3 days of the month. 

 

Hail

Small hail fell in a shower late in the afternoon  of the 15th, and briefly settled on the grass and garden. Shallow drifts remained against west-facing structures until after nightfall.  

 

Thunder

Thunder was heard to the northeast mid to late afternoon on the 16th.

 

Snow

 

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

 

Wind

 

Winds were predominantly from between southwest and northwest,  with winds from  easterly quadrants only accounting for 20% of the daily observations, with most of these winds occurring during the last week of April. It was quite breezy at times, but nothing too strong, except on the 15h. At  Shoreham Airport,  southwesterly winds gusted to 34 knots (39 mph) early in the afternoon on the 3rd,  with gusts again reaching 34 knots (39 mph) from the southwest early in the morning on the 4th. Southwesterly winds gusted to 31 knots (35 mph)  late in the evening on the 6th, but after a lull, the 9th was a breezy day with many gusts over 30 knots (34 mph) and a peak gust early in the morning of 39 knots (45 mph) from the southwest. The 15th was a particularly windy day with southwesterly gusts reaching 40 knots (46 mph) in the late morning, but no further gusts above 30 knots (34 mph) occurred during the remainder of April. 

 

 

Fog

 

Mist and fog occurred in the morning, and again in the evening, of the 11th.

 

Statistics for April 2024

 

Reporting Site	Highest Temp	Lowest Temp	Rain Total (mm)	Wettest	Rain days
Shoreham A/P	16.3	0.4	63	14	18
Thorney Island	15.9	2.5			16
Gatwick A/P	19.3	-0.5			16
Herstmonceux	18.2	2.7			22
Bournemouth (Hurn)	17.8	-0.2			18
Middle Wallop	19.1	1.1			17
Dieppe	23.1	1.9	47	7	20

• Rainfall totals unreliable for all stations