Deep Water Bay, Hong Kong offers 1 beach perfect for sunbathing, surfing, swimming, and more. Deep Water Bay, Hong Kong Island, Hong Kong, is known for its picturesque beach and the exclusive Hong Kong Golf Club. The best time to visit Deep Water Bay, 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!