Weather is probably a major factor when you plan your trip to Mahaplag, and keep in mind that cheaper options are usually available when the weather isn't as good. The hottest months are usually May and June with an average temp of 81°F, while the coldest months are February and March with an average of 78°F. The rainiest months in Mahaplag are January, December, June, and November, with each month seeing an average of 14 inches of rainfall.