Ninh Hai, Vietnam offers 2 beaches perfect for sunbathing, surfing, swimming, and more. Ninh Hai is known for Nui Chua National Park and Vinh Hy Bay. The best time to travel to Ninh Hai, Vietnam, is from December to April, with average air temperatures around 25-30°C (77-86°F) and water temperatures approximately 24-28°C (75-82°F). Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!