Ban Bang Khao, Thailand offers 1 beach perfect for sunbathing, surfing, swimming, and more. Ban Bang Khao, Surat Thani, Thailand, is known for its proximity to the stunning Ang Thong National Marine Park. The best time to travel to Ban Bang Khao, Thailand, is from November to February, with average air temperatures around 25-30°C (77-86°F) and water temperatures around 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!