Wewak, Papua New Guinea offers 2 beaches perfect for sunbathing, surfing, swimming, and more. Wewak is known for its beautiful beaches and as a gateway to the Sepik River region. The best time to travel to Wewak, Papua New Guinea, is from May to October, with average air temperatures around 27°C (81°F) and water temperatures near 29°C (84°F). Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!