Weather is probably a major factor when you plan your trip to Pak Nam, but bear 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 temperature of 28°C, while the coldest months are January and February, with an average of 26°C. The rainiest months in Pak Nam are November, October, September and May, with each month seeing an average of 311 mm of rainfall.