Other facts from our historical weather data: Which is the hottest month in Imbassai? February has an average maximum temperature of 33°C (91°F) and is the hottest month of the year. Which is the coolest month in Imbassai? The coolest month is August with an average maximum temperature of 28°C (82°F). Which is the wettest month in Imbassai? May tops the wettest month list with 140mm (5.5 in) of rainfall. Which is the driest month in Imbassai? December is the driest month with 48mm (1.9 in) of precipitation. 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.