Other facts from our historical weather data: When is the rainy season in Ban Dondét? Rainy season in Ban Dondét occurs in the months of May, June, July, August, September and October. Does Ban Dondét have a dry season? Yes, the months of January, February and December are very dry. Which is the hottest month in Ban Dondét? March has an average maximum temperature of 37°C (99°F) and is the hottest month of the year. Which is the coolest month in Ban Dondét? The coolest month is January with an average maximum temperature of 32°C (90°F). Which is the wettest month in Ban Dondét? September tops the wettest month list with 352mm (13.9 in) of rainfall. Which is the driest month in Ban Dondét? January is the driest month with 5mm (0.2 in) of precipitation. Which is the sunniest month in Ban Dondét? March is the sunniest month with an average of 267 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.