Maruni, Indonesia offers 1 beach perfect for sunbathing, surfing, swimming, and more. Maruni, West Papua, Indonesia, is known for Cenderawasih Bay National Park and its diverse marine life. The best time to travel to Maruni, Indonesia, is from May to September, when the average air temperature is around 27°C (81°F) and the water temperature is approximately 28°C (82°F). Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!