Dien Chau, Vietnam offers 2 beaches perfect for sunbathing, surfing, swimming, and more. Dien Chau is known for its beautiful beaches and historical sites in Nghe An, Vietnam. The best time to travel to Dien Chau, Vietnam, is from November to April, with average air temperatures around 20-25°C (68-77°F) and water temperatures around 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!