Monthly weather forecast and climate
Unawatuna, Sri Lanka LK

Warmest months (with the highest average high temperature) are March and April (31°C).
Months with the lowest average high temperature are January, June, July, August, September, October, November and December (29°C).

The month with the highest average low temperature is May (25°C).
Coldest months (with the lowest average low temperature) are January, February, November and December (22°C).

The wettest month (with the highest rainfall) is October (340mm).
The driest month (with the lowest rainfall) is January (94mm).

Months with the highest number of rainy days are October and November (14 days).
Months with the lowest number of rainy days are January and February (5 days).

The best month for swimming (with the highest average sea temperature) is April (30°C).
Coldest months (with the lowest average sea temperature) are January, February, June, July, August, September, October and December (28°C).

The month with the longest days is June (Average daylight: 12.5h).
Months with shortest days are January and December (Average daylight: 11.8h).

Months with most sunshine are February and March (Average sunshine: 8h).
Months with least sunshine are May, June, July, August, September, October and November (Average sunshine: 6).

Months with the highest UV index are January, February, March, April, May, June, July, August, September and October (UV index 12).
Months with the lowest UV index are November and December (UV index 11).