Weather is probably a major factor when you plan your trip to Nai Mueang, but bear in mind that cheaper options are usually available when the weather isn't as good. The hottest months are usually April and March, with an average temperature of 29°C, while the coldest months are January and December, with an average of 25°C. The rainiest months in Nai Mueang are September, July, August and June, with each month seeing an average of 325 mm of rainfall.