Mataiva, French Polynesia offers 1 beach perfect for sunbathing, surfing, swimming, and more. Mataiva, Tuamotu Gambier Islands, French Polynesia, is known for its unique atoll structure with nine distinct islets and a stunning turquoise lagoon. The best time to travel to Mataiva, French Polynesia, is from May to October, when the average air temperature is around 77-86°F (25-30°C) and the water temperature is approximately 79-84°F (26-29°C). Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!