August is the hottest month in Dieppe with an average temperature of 18°C (64°F) and the coldest is January at 5°C (41°F) with the most daily sunshine hours at 7 in August. The wettest month is January with an average of 80mm of rain. The best month to swim in the sea is in August when the average sea temperature is 19°C (66°F).
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Sunrise 08:18
Sunset 17:05
Sunrise 08:18
Sunset 17:05