Kayu Island, Indonesia offers 1 beach perfect for sunbathing, surfing, swimming, and more. Kayu Island, Aceh, Indonesia, is known for its stunning coral reefs and vibrant marine life, making it a popular destination for snorkeling and diving enthusiasts. The best time to travel to Kayu Island, 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!