Other facts from our historical weather data: Does Ouagadougou have a dry season? Yes, the months of January, February, March, April, November and December are very dry. Which is the hottest month in Ouagadougou? April has an average maximum temperature of 40°C (104°F) and is the hottest month of the year. Which is the coolest month in Ouagadougou? The coolest month is January with an average maximum temperature of 32°C (90°F). Which is the wettest month in Ouagadougou? August tops the wettest month list with 207mm (8.1 in) of rainfall. Which is the driest month in Ouagadougou? December is the driest month with 0mm (0 in) of precipitation. Which is the sunniest month in Ouagadougou? December is the sunniest month with an average of 290 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.