Baan Harn, Thailand offers 4 beaches perfect for sunbathing, surfing, swimming, and more. Baan Harn is known for its proximity to the stunning Ang Thong National Marine Park and the vibrant Full Moon Party on nearby Koh Phangan. The best time to travel to Baan Harn, Thailand, is from November to February, with average air temperatures around 25-30°C (77-86°F) and water temperatures about 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!