Weather will likely play an important role when you plan your trip to Chaeramae, 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 Chaeramae are September, July, August and June, with each month seeing an average of 325 mm of rainfall.