Hoa Hai, Vietnam offers 4 beaches perfect for sunbathing, surfing, swimming, and more. Hoa Hai, Da Nang, Vietnam, is known for the Marble Mountains and Non Nuoc Beach. The best time to travel to Hoa Hai, Vietnam, is from February to April, with average air temperatures around 25-30°C (77-86°F) and water temperatures approximately 25-28°C (77-82°F). Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!