Simpang Tiga, Indonesia offers 1 beach perfect for sunbathing, surfing, swimming, and more. Simpang Tiga, Bangka Belitung Islands, Indonesia, is known for its proximity to the beautiful beaches of Tanjung Kelayang and the unique granite rock formations of Belitung Island. The best time to travel to Simpang Tiga, 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!