If you're looking forward to lots of outings with your partner, check out these details about year-round temperatures in Hinatuan: The hottest months are usually August and September with an average temp of 81°F, while the coldest months are February and March with an average of 79°F. The rainiest months in Hinatuan are January, December, February, and November, with each month seeing an average of 16 inches of rainfall.