Mon Ikeun, Indonesia offers 8 beaches perfect for sunbathing, surfing, swimming, and more. Mon Ikeun, Aceh, Indonesia, is known for the Baiturrahman Grand Mosque and its stunning Islamic architecture. The best time to travel to Mon Ikeun, Indonesia, is from May to September, with average air temperatures around 27°C (81°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!