Taking into account the local weather in Rupa-Rupa can help you maximize your time at the pool during your trip. The hottest months are usually September and October with an average temp of 72°F, while the coldest months are June and July with an average of 69°F. The rainiest months in Rupa-Rupa are February, December, January, and March, with each month seeing an average of 21 inches of rainfall.