You might spend a lot of your vacation inside, but if you want to see more of the area, looking at local weather trends is a good idea. The hottest months are usually March and April with an average temp of 82°F, while the coldest months are January and February with an average of 79°F. The rainiest months in Thahtay Kyun are September, July, October, and August, with each month seeing an average of 16 inches of rainfall.