Weather will likely play an important role when you plan your trip to Andigama, 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 Andigama are October, November, May and December, with each month seeing an average of 262 mm of rainfall.