Other facts from our historical weather data: When is the rainy season in Champasak? Rainy season in Champasak occurs in the months of May, June, July, August, September and October. Does Champasak have a dry season? Yes, the months of January, February and December are very dry. Which is the hottest month in Champasak? April has an average maximum temperature of 36°C (97°F) and is the hottest month of the year. Which is the coolest month in Champasak? The coolest month is January with an average maximum temperature of 31°C (88°F). Which is the wettest month in Champasak? August tops the wettest month list with 429mm (16.9 in) of rainfall. Which is the driest month in Champasak? January is the driest month with 4mm (0.2 in) of precipitation. Which is the sunniest month in Champasak? January is the sunniest month with an average of 272 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.