Other facts from our historical weather data: Which months have the greatest rainfall in Hambantota? Most rainfall (rainy season) is seen in October, November and December. Which is the hottest month in Hambantota? April has an average maximum temperature of 31°C (88°F) and is the hottest month of the year. Which is the coolest month in Hambantota? The coolest month is January with an average maximum temperature of 30°C (86°F). Which is the wettest month in Hambantota? November tops the wettest month list with 251mm (9.9 in) of rainfall. Which is the driest month in Hambantota? July is the driest month with 39mm (1.5 in) of precipitation. Which is the sunniest month in Hambantota? March is the sunniest month with an average of 250 hours of sunshine. No idea where to travel to this year? We have a tool that recommends destinations based on your ideal conditions. Find out where to go with our weather planner.