Other facts from our historical weather data: Which months have the greatest rainfall in Nong Bua? Most rainfall (rainy season) is seen in July, August, September and October. Does Nong Bua have a dry season? Yes, the months of January, February and December are very dry. Which is the hottest month in Nong Bua? 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 Nong Bua? The coolest month is January with an average maximum temperature of 32°C (90°F). Which is the wettest month in Nong Bua? September tops the wettest month list with 205mm (8.1 in) of rainfall. Which is the driest month in Nong Bua? December is the driest month with 10mm (0.4 in) of precipitation. Which is the sunniest month in Nong Bua? December is the sunniest month with an average of 263 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.