May is the hottest month in Unawatuna with an average temperature of 29°C (83°F) and the coldest is January at 27°C (80°F) with the most daily sunshine hours at 9 in March. The wettest month is November with an average of 207.4mm of rain. The best month to swim in the sea is in April when the average sea temperature is 30°C (86°F).
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Sunrise 05:55
Sunset 17:55
Sunrise 05:55
Sunset 17:55