Vinh Hien, Vietnam offers 1 beach perfect for sunbathing, surfing, swimming, and more. Vinh Hien, Thua Thien Hue, Vietnam, is known for its proximity to the scenic Tam Giang-Cau Hai Lagoon. The best time to travel to Vinh Hien, Vietnam, is from February to April, when the average air temperature is around 25°C (77°F) and the water temperature is approximately 26°C (79°F). Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!