Planning for the weather is an important factor for making your trip to Colombo 06 a success, especially when you’re splurging. The hottest months are usually March and April with an average temp of 81°F, while the coldest months are January and February with an average of 80°F. The rainiest months in Colombo 06 are May, October, June, and November, with each month seeing an average of 16 inches of rainfall.