Taking into account the local weather in Na Chum Het is an important factor for planning your visit, especially if you plan to spend your trip poolside. The hottest months are usually March and April with an average temp of 81°F, while the coldest months are January and February with an average of 79°F. The rainiest months in Na Chum Het are September, October, November, and May, with each month seeing an average of 12 inches of rainfall.