If you're looking forward to lots of outings with your partner, check out these details about year-round temperatures in Lake Sebu: The hottest months are usually April and March with an average temp of 76°F, while the coldest months are February and January with an average of 75°F. The rainiest months in Lake Sebu are May, June, July, and April, with each month seeing an average of 17 inches of rainfall.