August is the hottest month in Formia with an average temperature of 25°C (75°F) and the coldest is January at 9°C (48°F) with the most daily sunshine hours at 10 in August. The wettest month is November with an average of 134.8mm of rain. The best month to swim in the sea is in August when the average sea temperature is 27°C (80°F).
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Sunrise 07:05
Sunset 16:42
Sunrise 07:05
Sunset 16:42