July is the hottest month in Calais with an average temperature of 18°C (64°F) and the coldest is January at -9°C (16°F) with the most daily sunshine hours at 9 in July. The wettest month is October with an average of 120mm of rain. The best month to swim in the sea is in August when the average sea temperature is 15°C (59°F).
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Sunrise 06:36
Sunset 15:54
Sunrise 06:36
Sunset 15:54