Taking into account the local weather in Kapoiala is an important factor for planning your visit, especially if you plan to spend your trip poolside. The hottest months are usually November and October with an average temp of 80°F, while the coldest months are August and September with an average of 77°F. The rainiest months in Kapoiala are May, March, June, and April, with each month seeing an average of 16 inches of rainfall.