The maximum temperature in Kalutara is on average 30°C over the year, with values generally ranging between 29°C in August and 32°C in March. The climate is very wet, with about 4,472 mm of precipitation per year. The monthly minimum is 73 mm in January and the maximum reaches 736 mm in June.
The climate is suitable for a trip to Kalutara in: January, February, March, April, October, November and December. Nevertheless, the months when the weather is really pleasant are January, February, March and December.
For swimming, the most favorable period for water temperature is March, April and May, with a water temperature above 28.7°C.
However, the best time to fully enjoy the beach and swimming is January, February, November and December.
In terms of crowd levels, the quietest periods are in May, June, September and October, while crowding is high in January and December.
