Weather will likely play an important role when you plan your trip to Thani, 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 86°F, while the coldest months are December and January with an average of 78°F. The rainiest months in Thani are August, September, July, and May, with each month seeing an average of 10 inches of rainfall.