Sunter Agung, Indonesia offers 1 beach perfect for sunbathing, surfing, swimming, and more. Sunter Agung is not widely recognized for travel and beach tourism. The best time to travel to Sunter Agung, Indonesia, is from May to September, with average air temperatures around 28°C (82°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!