July is the hottest month in Chesham with an average temperature of 17°C (63°F) and the coldest is January at 5°C (41°F) with the most daily sunshine hours at 8 in July. The wettest month is December with an average of 72mm of rain. The best month to swim in the sea is in August when the average sea temperature is 17°C (63°F).
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Sunrise 07:35
Sunset 16:02
Sunrise 07:35
Sunset 16:02