Quynh Nghia, Vietnam offers 1 beach perfect for sunbathing, surfing, swimming, and more. Quynh Nghia, Nghe An, Vietnam, is known for its beautiful beaches and the nearby Quynh Bang Church. The best time to travel to Quynh Nghia, Vietnam, is from March to April, with average air temperatures around 25-30°C (77-86°F) and water temperatures approximately 24-28°C (75-82°F). Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!