Other facts from our historical weather data: Which months have the greatest rainfall in Nakhon ratchasima? Most rainfall (rainy season) is seen in August and September. Does Nakhon ratchasima have a dry season? Yes, the months of January, February and December are very dry. Which is the hottest month in Nakhon ratchasima? April has an average maximum temperature of 37°C (99°F) and is the hottest month of the year. Which is the coolest month in Nakhon ratchasima? The coolest month is January with an average maximum temperature of 31°C (88°F). Which is the wettest month in Nakhon ratchasima? September tops the wettest month list with 247mm (9.7 in) of rainfall. Which is the driest month in Nakhon ratchasima? December is the driest month with 7mm (0.3 in) of precipitation. Which is the sunniest month in Nakhon ratchasima? December is the sunniest month with an average of 230 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.