Tha Chatchai, Thailand offers 2 beaches perfect for sunbathing, surfing, swimming, and more. Tha Chatchai, Phuket, Thailand, is known for the Sarasin Bridge, which connects Phuket Island to the mainland. The best time to travel to Tha Chatchai, Thailand, is from November to February, 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!