Weather can make or break a roadtrip, so here's some data about year-round temperatures in Lamap to help you plan yours: The hottest months are usually February and March with an average temp of 81°F, while the coldest months are August and September with an average of 76°F. The rainiest months in Lamap are April, March, January, and February, with each month seeing an average of 11 inches of rainfall.