July is the hottest month in St Ives with an average temperature of 15°C (59°F) and the coldest is January at 6°C (43°F) with the most daily sunshine hours at 7 in August. The wettest month is December with an average of 132mm 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 07:20
Sunset 16:51
Sunrise 07:20
Sunset 16:51