Other facts from our historical weather data: Which months have the greatest rainfall in Chai Badan? Most rainfall (rainy season) is seen in June, July, August and September. Does Chai Badan have a dry season? Yes, the months of January, February and December are very dry. Which is the hottest month in Chai Badan? April has an average maximum temperature of 38°C (100°F) and is the hottest month of the year. Which is the coolest month in Chai Badan? The coolest month is December with an average maximum temperature of 33°C (91°F). Which is the wettest month in Chai Badan? September tops the wettest month list with 259mm (10.2 in) of rainfall. Which is the driest month in Chai Badan? December is the driest month with 7mm (0.3 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.