Weather will likely play an important role when you plan your trip to Phnum Kravanh, and keep in mind that cheaper options are usually available when the weather isn't as good. The hottest months are usually March and April with an average temp of 85°F, while the coldest months are January and December with an average of 79°F. The rainiest months in Phnum Kravanh are September, October, August, and May, with each month seeing an average of 9 inches of rainfall.