Cemagi, Indonesia offers 3 beaches perfect for sunbathing, surfing, swimming, and more. Cemagi is known for its stunning Pura Gede Luhur Batu Ngaus temple and beautiful black sand beaches. The best time to travel to Cemagi, Indonesia, is 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!