Sichon, Thailand offers 1 beach perfect for sunbathing, surfing, swimming, and more. Sichon, Nakhon Si Thammarat, Thailand, is known for its beautiful beaches like Sichon Beach and the nearby Khao Phlai Dam. The best time to travel to Sichon, Thailand, is from December 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!