Taking into account the local weather in Ha'ateiho is an important factor for planning your visit, especially if you plan to spend your trip poolside. The hottest months are usually February and March with an average temp of 80°F, while the coldest months are August and September with an average of 73°F. The rainiest months in Ha'ateiho are February, March, January, and April, with each month seeing an average of 11 inches of rainfall.