If you’re hoping to get lost in the rain on your romantic getaway, check out these details about year-round temperatures in Dimiao: The hottest months are usually May and June with an average temp of 83°F, while the coldest months are February and January with an average of 80°F. The rainiest months in Dimiao are July, October, June, and January, with each month seeing an average of 11 inches of rainfall.