Weather will likely play an important role when you plan your trip to Colombo 06, 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 27°C, while the coldest months are January and February, with an average of 27°C. The rainiest months in Colombo 06 are May, October, June and November, with each month seeing an average of 412 mm of rainfall.