Taking into account the local weather in Pohnpei 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 83°F, while the coldest months are March and July with an average of 82°F. The rainiest months in Pohnpei are May, July, November, and June, with each month seeing an average of 16 inches of rainfall.