Duy Hai, Vietnam offers 1 beach perfect for sunbathing, surfing, swimming, and more. Duy Hai is known for its traditional fishing village culture and fresh seafood markets. The best time to travel to Duy Hai, Vietnam, is from February to April, with average air temperatures around 25-30°C (77-86°F) and water temperatures approximately 26-28°C (79-82°F). Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!