Taking into account the local weather in Kertajaya is an important factor for planning your visit, especially if you plan to spend your trip poolside. The hottest months are usually September and October with an average temp of 81°F, while the coldest months are August and February with an average of 80°F. The rainiest months in Kertajaya are March, December, February, and January, with each month seeing an average of 12 inches of rainfall.