Weather will likely play an important role when you plan your trip to Tha Wang Pha, and keep 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 temp of 79°F, while the coldest months are January and December with an average of 71°F. The rainiest months in Tha Wang Pha are August, July, September, and June, with each month seeing an average of 12 inches of rainfall.