Taking the local weather in Biliran into account is an important factor for planning your visit, especially if you plan to spend your trip by the pool. The hottest months are usually May and June, with an average temperature of 28°C, while the coldest months are February and January, with an average of 26°C. The rainiest months in Biliran are July, September, June and October, with each month seeing an average of 328 mm of rainfall.