Weather will likely play an important role when you plan your trip to Lantapan, and keep in mind that cheaper options are usually available when the weather isn't as good. The hottest months are usually April and May with an average temp of 70°F, while the coldest months are February and March with an average of 69°F. The rainiest months in Lantapan are June, May, July, and September, with each month seeing an average of 19 inches of rainfall.