Wanning, China offers 2 beaches perfect for sunbathing, surfing, swimming, and more. Wanning is known for Riyue Bay, a popular surfing destination in Hainan, China. The best time to travel to Wanning, China, is from November to April, with average air temperatures around 20-25°C (68-77°F) and water temperatures approximately 23-27°C (73-81°F). Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!