Weather will likely play an important role when you plan your trip to Chanthanimit, 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 28°C, while the coldest months are January and December, with an average of 26°C. The rainiest months in Chanthanimit are September, July, August and June, with each month seeing an average of 423 mm of rainfall.