Other facts from our historical weather data: When is the rainy season in Prachin Buri? Rainy season in Prachin Buri occurs in the months of May, June, July, August, September and October. Does Prachin Buri have a dry season? Yes, the months of January, February and December are very dry. Which is the hottest month in Prachin Buri? April has an average maximum temperature of 36°C (97°F) and is the hottest month of the year. Which is the coolest month in Prachin Buri? The coolest month is January with an average maximum temperature of 32°C (90°F). Which is the wettest month in Prachin Buri? September tops the wettest month list with 334mm (13.1 in) of rainfall. Which is the driest month in Prachin Buri? 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.