Tong Yang, Thailand offers 1 beach perfect for sunbathing, surfing, swimming, and more. Surat Thani is known for being the gateway to the islands of Koh Samui, Koh Phangan, and Koh Tao. The best time to travel to Tong Yang, Thailand, is from November to February, with average air temperatures around 25-30°C (77-86°F) and water temperatures approximately 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!