Sumbersih, Indonesia offers 1 beach perfect for sunbathing, surfing, swimming, and more. Sumbersih is known for its serene beaches and natural beauty in East Java, Indonesia. The best time to travel to Sumbersih, Indonesia, is during the dry season 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!