Wainyapu, Indonesia offers 1 beach perfect for sunbathing, surfing, swimming, and more. Wainyapu is known for its traditional Sumba houses and vibrant cultural festivals. The best time to travel to Wainyapu, Indonesia, is from May to September, with average air temperatures around 27°C (81°F) and water temperatures near 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!