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).
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Sunrise 07:05
Sunset 16:39
Sunrise 07:05
Sunset 16:39