Other facts from our historical weather data: Which months have the greatest rainfall in Suphan Buri? Most rainfall (rainy season) is seen in May, August, September and October. Does Suphan Buri have a dry season? Yes, the months of January, February and December are very dry. Which is the hottest month in Suphan Buri? April has an average maximum temperature of 39°C (102°F) and is the hottest month of the year. Which is the coolest month in Suphan Buri? The coolest month is January with an average maximum temperature of 34°C (93°F). Which is the wettest month in Suphan Buri? September tops the wettest month list with 259mm (10.2 in) of rainfall. Which is the driest month in Suphan Buri? December is the driest month with 12mm (0.5 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.