If you’re hoping to get lost in the rain on your romantic getaway, check out these details about year-round temperatures in Mae Sot: The hottest months are usually March and April with an average temp of 80°F, while the coldest months are January and December with an average of 74°F. The rainiest months in Mae Sot are August, July, June, and September, with each month seeing an average of 25 inches of rainfall.