Weather will likely play an important role when you plan your trip to Kalpitiya, but bear in mind that cheaper options are usually available when the weather isn't as good. The hottest months are usually March and April, with an average temperature of 28°C, while the coldest months are January and February, with an average of 26°C. The rainiest months in Kalpitiya are November, October, May and December, with each month seeing an average of 265 mm of rainfall.