Fan Lau Sai Wan, Hong Kong offers 1 beach perfect for sunbathing, surfing, swimming, and more. Fan Lau Sai Wan, New Territories, Hong Kong, is known for the Fan Lau Fort and the scenic hiking trails along the Lantau Trail. The best time to travel to Fan Lau Sai Wan, Hong Kong, is from October to December, with average air temperatures around 20-25°C (68-77°F) and water temperatures around 23-26°C (73-79°F). Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!