Thung Sai, Thailand offers 1 beach perfect for sunbathing, surfing, swimming, and more. Clarington is known for the Canadian Tire Motorsport Park and the Darlington Provincial Park. The best time to travel to Thung Sai, 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!