Taking into account the local weather in Lantapan is an important factor for planning your visit, especially if you plan to spend your trip poolside. 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.