Alderney, United Kingdom: Annual Weather Averages

August is the hottest month in Alderney with an average temperature of 17°C (63°F) and the coldest is February at 6°C (43°F) with the most daily sunshine hours at 8 in July. The wettest month is December with an average of 101mm of rain. The best month to swim in the sea is in August when the average sea temperature is 18°C (64°F).

Average Temperature: Alderney

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  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
°C 7 6 7 10 11 15 16 17 16 13 10 7
°F 45 43 45 50 52 59 61 63 61 55 50 45

Average High/Low Temperature: Alderney

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  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
High °C 8 7 8 12 13 17 18 19 17 14 11 8
Low °C 6 4 5 7 9 12 14 14 14 12 8 6
High °F 46 45 46 54 55 63 64 66 63 57 52 46
Low °F 43 39 41 45 48 54 57 57 57 54 46 43

Average Rainfall: Alderney

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  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
mm 97 78 70 52 53 49 47 51 72 85 99 101
Days 19 15 17 15 15 12 11 12 13 16 18 19

Average Daily Sunshine Hours: Alderney

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  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Hours 2 3 4 6 7 8 8 7 6 4 3 2

Average Sea Temperature: Alderney

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  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
°C 10 9 9 10 12 14 17 18 17 15 13 12
°F 50 48 48 50 54 57 63 64 63 59 55 54

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