Exceptionally Dry
Temperatures
The average maximum temperature during November 2021 in Shoreham was 11.5 Celsius (53F), and that was around normal for the time of year. The average minimum temperature was 6.0 Celsius (43F), and that was close to 1 Celsius (2F) below the November average.
The highest temperature recorded during the month was 15.8 Celsius (60F) on the 9th, but the temperature reached 15.1 Celsius (59F) on the 1st, and there were 4 more days with maxima above 14 Celsius (57F), including 3 consecutive days commencing on the 10th. A further 7 days had maxima above 13 Celsius (55F), with all of the milder days occurring before the 18th. The coolest days were mainly confined to the last 2 weeks of November. In fact, the maximum temperature of 9.4 Celsius (49F) on the 4th, was the only day with a high below 10 Celsius (50F) before the 21st. Thereafter, 7 days had maxima below 10 Celsius (50F). Only 3 of these cooler days had maxima below 7 Celsius (45F). The 27th, 28th and 29th had highs of 5.5, 4.6 and 4.6 Celsius (42 and 40F) respectively.
There were a few very mild nights during November. Of the 6 nights recording minima above 10 Celsius (50F), 5 occurred consecutively between the 9th and 13th, the exception was the 19th, which had a low of 11.3 Celsius (52F). The 9th, 10th and 12th also had minima above 11 Celsius (52F). The mildest night was the 12th with a low of 11.9 Celsius (54F), but the 9th was only 0.1 Celsius (<0.2F) less mild. The coldest nights were generally towards the end of the month. However, even though only 4 of the 14 days with minima below 5 Celsius (41F) occurred before mid month, there were 3 nights in the first fortnight, the 2nd, 5th and 8th, when the temperature dipped below 3 Celsius (37F). There were 5 other nights when the temperature fell below 3 Celsius (37F). They were the 23rd, and 4 consecutive nights beginning on the 26th. The coldest of these nights was the 29th, when minus 1.0 Celsius (30F) was recorded.
The sea temperature slowly fell from 14 or 15 Celsius (57-59F) at the beginning of November, to around 11 Celsius (52F) at end of the month.
Frost
There were 2 air frosts during November, both slight. On the 28th a minimum of minus 0.2 Celsius (<32F) was recorded with minus 1.0 Celsius (30F) measured on the following night. A total of 10 grass frosts occurred, with 5 of these during the first 3 weeks of the month, and the other 5 in the last week of November. Most of the grass frosts were very slight with the 4 grass frosts before the 18th having minima of minus 0.6 Celsius (31F). During the last week, the frosts were slightly more significant. However, only 2 nights had grass minimum temperatures below minus 2 Celsius (28F). The 26th had a minimum of minus 3.3 Celsius (26F), and the 29th had a low of minus 4.4 Celsius (24F).
Rain
Rainfall in November amounted to 6.8 millimetres (0.27 ins.), which was less than 10% of the average for the month. It would appear that November 2021 was the driest in the area for at least 187 years. Previously, the driest Novembers were those of 1901, 1945 and 1978 with Worthing totals of 8.6. 14.2 and 11.1 millimetres ( 0.34, 0.56 and 0.44 ins.) respectively. Measurable rain fell on only 6 days, which was 11 days below the average, and wet days (when 1 millimetre (0.04 ins.), or more, of rain falls) numbered 3, and that was 9 days below the average. Although just 6 of the first 11 days of the month were completely dry, measurable rain fell on only 1 day, the 8th, and then a mere 0.2 millimetres (0.01 ins.) were measured. On the 12th, a damp and drizzly day produced 1.8 millimetres (0.07 ins.) of rain, but the only measurable rain between the 13th and 25th was the 0.4 millimetres (0.02 ins.) recorded on the 16th. The last 5 days of the month were more unsettled, but of the 3 days that added to the monthly total, only the 26th and 30th recorded more than 0.2 millimetres (0.01 ins.). These 2 days accumulated 1.6 and 2.6 millimetres (0.06 and 0.1 ins.) respectively.
Hail
No hail was observed in this part of Shoreham.
Thunder
No thunder was heard in this part of Shoreham.
Snow
Light snow was followed by sleet for a while mid evening on the 28th, but the precipitation barely dampened the ground.
Wind
High pressure was dominant during November with the mean sea level pressure readings around 6 millibars above average. The highest pressure was mostly to the west or southwest of the British Isles, and that resulted in an usually high number of days with winds blowing from between north and west. In Shoreham, winds from the northwesterly quadrant accounted for two thirds of the daily readings. It was less windy than a normal autumn month. At Shoreham Airport, southwesterly gusts reached 37 knots (42 mph) in the early hours of the 1st, but no further strong winds occurred until the 12th, when southwesterlies gusted to 30 knots (34 mph) late in the morning. On the 26th, northwesterly winds gusted to 30 knots (34 mph) during the late afternoon, with 43 knots (49 mph) from a similar direction recorded on the evening of the 27th after a very windy day. The wind decreased overnight, but not before 34 knots (39 mph) occurred in the early hours of the 28th. Late on the 30th, southwesterly gusts reached 34 knots (39 mph).
Fog
There was a misty, drizzly evening on the 8th, but no fog was observed in this part of Shoreham.
Statistics for November 2021
| Reporting Site | Highest Temp | Lowest Temp | Rain Total (mm) | Wettest | Rain days |
| Shoreham A/P | 15.5 | -2.2 | 4 | 1 | 7 |
| Thorney Island | 15.1 | -1.8 | 8 | 2 | 13 |
| Gatwick A/P | 15.2 | -1.9 | 11 | 3 | 10 |
| Herstmonceux | 14.6 | -1.2 | 15 | 5 | 10 |
| Bournemouth (Hurn) | 15.5 | -4.6 | 4 | 1 | 11 |
| Middle Wallop | 14.3 | -1.3 | 16 | 4 | 13 |
| Dieppe | 14.4 | -1.9 | 46 | 12 | 13 |