Weather will likely play an important role when you plan your trip to Ko Thepho, 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 31°C, while the coldest months are December and January, with an average of 26°C. The rainiest months in Ko Thepho are September, August, July and October, with each month seeing an average of 250 mm of rainfall.