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Sussex Monthly Climate Averages
To help you choose the best time to travel, you can find climate data below on the weather in Sussex .
Month | t°C day |
t°C night |
mm rain |
daylight |
January | +7.8 | +2.1 | 74 | 9.2h |
February | +7.8 | +1.9 | 50 | 10.7h |
March | +10 | +3.4 | 54 | 12.5h |
April | +12.5 | +4.8 | 45 | 14.5h |
May | +15.8 | +7.9 | 44 | 16.2h |
June | +18.6 | +10.7 | 44 | 17.2h |
July | +20.6 | +12.9 | 45 | 16.7h |
August | +20.8 | +12.7 | 53 | 15.1h |
September | +18.6 | +10.7 | 62 | 13.1h |
October | +15.2 | +8.2 | 88 | 11.2h |
November | +11.2 | +4.8 | 84 | 9.6h |
December | +8.4 | +2.6 | 80 | 8.7h |
Best time with the soft weather for the sightseeing and long walks in Sussex are June, July, August, September.
Temperature in Sussex
The table shows that the hottest months in Sussex are August and July, during which the average daytime temperature reaches +20.8°C and the nighttime temperature falls to +12.7°C.
The coldest months are January and February, when the daily average temperature falls to +7.8°C, and drops to +2.1°C during the night.
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Sea temperature
The month with the highest average monthly temperature in the English Channel on the beaches of Sussex is September with 17.3 degrees.
The coldest water can be found in March — 8.2degrees C.
Precipitation
The largest amount of precipitation falls on average in October and November, up to 88mm, and the least in May and June — up to 44mm.