Sejahtera, Indonesia offers 3 beaches perfect for sunbathing, surfing, swimming, and more. Sejahtera, Aceh, Indonesia, is known for the Baiturrahman Grand Mosque and the Tsunami Museum. The best time to travel to Sejahtera, Indonesia, is from May to September, with average air temperatures around 28°C (82°F) and water temperatures near 27°C (81°F). Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!