Other facts from our historical weather data: When is the rainy season in Mueang Kao? Rainy season in Mueang Kao occurs in the months of May, June, July, August, September and October. Does Mueang Kao have a dry season? Yes, the months of January, February and December are very dry. Which is the hottest month in Mueang Kao? April has an average maximum temperature of 40°C (104°F) and is the hottest month of the year. Which is the coolest month in Mueang Kao? The coolest month is January with an average maximum temperature of 32°C (90°F). Which is the wettest month in Mueang Kao? September tops the wettest month list with 267mm (10.5 in) of rainfall. Which is the driest month in Mueang Kao? February is the driest month with 14mm (0.6 in) of precipitation. Which is the sunniest month in Mueang Kao? March is the sunniest month with an average of 277 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.