Planning for the weather is a good way to make your trip to Kut Chum relaxing and enjoyable, especially when you're splurging. The hottest months are usually April and March with an average temp of 86°F, while the coldest months are January and December with an average of 77°F. The rainiest months in Kut Chum are September, July, August, and May, with each month seeing an average of 11 inches of rainfall.