Sosor Gadong, Indonesia offers 1 beach perfect for sunbathing, surfing, swimming, and more. Sosor Gadong is known for its proximity to Lake Toba, a popular travel and beach tourism destination in North Sumatra, Indonesia. The best time to travel to Sosor Gadong, Indonesia, is from May to September, with average air temperatures around 77°F (25°C) and water temperatures near 82°F (28°C). Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!