Taking into account the local weather in Mabul Island is an important factor for planning your visit, especially if you plan to spend your trip poolside. The hottest months are usually April and May with an average temp of 82°F, while the coldest months are February and January with an average of 80°F. The snowiest months in Mabul Island are May, April, January, and February, with each month seeing an average of 25 inches of snowfall.