Timoenai, Papua New Guinea offers 1 beach perfect for sunbathing, surfing, swimming, and more. Timoenai, Manus Province, Papua New Guinea, is known for its proximity to the stunning coral reefs and diverse marine life of the Bismarck Sea. The best time to travel to Timoenai, Papua New Guinea, is from May to October, with average air temperatures around 25-30°C (77-86°F) and water temperatures approximately 27-29°C (81-84°F). Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!