If you're looking forward to lots of outings with your partner, check out these details about year-round temperatures in Caibiran: The hottest months are usually May and April with an average temp of 82°F, while the coldest months are February and January with an average of 80°F. The rainiest months in Caibiran are July, September, June, and October, with each month seeing an average of 12 inches of rainfall.