Weather is probably a major factor when you plan your trip to Pak Nam, and keep in mind that cheaper options are usually available when the weather isn't as good. The hottest months are usually March and February 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 Pak Nam are November, October, September, and May, with each month seeing an average of 12 inches of rainfall.