Other facts from our historical weather data: Which is the wettest month in Maun? January tops the wettest month list with 152mm (6 in) of rainfall. Which is the driest month in Maun? August is the driest month with 0mm (0 in) of precipitation. Which is the sunniest month in Maun? August is the sunniest month with an average of 332 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.