Taking the local weather in Cha-uat into account can help you maximise your time at the pool during your trip. The hottest months are usually May and June, with an average temperature of 28°C, while the coldest months are January and February, with an average of 26°C. The rainiest months in Cha-uat are November, December, October and January, with each month seeing an average of 320 mm of rainfall.