Weather will likely play an important role when you plan your trip to Aluthgama, 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 27°C. The rainiest months in Aluthgama are May, June, October and November, with each month seeing an average of 405 mm of rainfall.