March and April are the months when Colombo goes through summer. Summer is not that severe in the city as it usually has a moderate temperature throughout the year. The month of April becomes a bit harsh with the dry and hot weather making it not the best time to visit Colombo. It is the not the right time for a traveler to roam around and experience the city due to the uncomfortable weather. Colombo in May is virtually empty due to hot and humid weather. However, travelers can get the best offers on flights and hotel rates in summer.