Taking into account the local weather in Tarawa is an important factor for planning your visit, especially if you plan to spend your trip poolside. The hottest months are usually May and June with an average temp of 83°F, while the coldest months are March and February with an average of 82°F. The rainiest months in Tarawa are March, January, April, and December, with each month seeing an average of 9 inches of rainfall.