Duyen Hai Town, Vietnam offers 1 beach perfect for sunbathing, surfing, swimming, and more. Duyen Hai Town is known for the Duyen Hai Wind Farm and Ba Dong Beach. The best time to travel to Duyen Hai Town, Vietnam, is from December to April, with average air temperatures around 25-30°C (77-86°F) and water temperatures near 27°C (81°F). Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!