Other facts from our historical weather data: Which months have the greatest rainfall in Moundou? Most rainfall (rainy season) is seen in July, August and September. Does Moundou have a dry season? Yes, the months of January, February, March, November and December are very dry. Which is the hottest month in Moundou? March has an average maximum temperature of 39°C (102°F) and is the hottest month of the year. Which is the coolest month in Moundou? The coolest month is January with an average maximum temperature of 30°C (86°F). Which is the wettest month in Moundou? August tops the wettest month list with 279mm (11 in) of rainfall. Which is the driest month in Moundou? December is the driest month with 0mm (0 in) of precipitation. Which is the sunniest month in Moundou? December is the sunniest month with an average of 291 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.