Nghi Son, Vietnam offers 1 beach perfect for sunbathing, surfing, swimming, and more. Nghi Son, Thanh Hoa, Vietnam, is known for the Nghi Son Economic Zone and its proximity to the pristine beaches of Hai Hoa and Sam Son. The best time to travel to Nghi Son, Vietnam, is from November to April, with average air temperatures around 22-28°C (72-82°F) and water temperatures around 24-27°C (75-81°F). Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!