Planning for the weather is a good way to make your trip to Moorea-Maiao relaxing and enjoyable, especially when you’re splurging. The hottest months are usually March and February with an average temp of 81°F, while the coldest months are August and September with an average of 77°F. The rainiest months in Moorea-Maiao are January, February, December, and March, with each month seeing an average of 12 inches of rainfall.