Taking into account the local weather in Ngandong is an important factor for planning your visit, especially if you plan to spend your trip poolside. The hottest months are usually March and April with an average temp of 79°F, while the coldest months are August and July with an average of 77°F. The rainiest months in Ngandong are February, December, January, and March, with each month seeing an average of 16 inches of rainfall.