Dai Lanh, Vietnam offers 2 beaches perfect for sunbathing, surfing, swimming, and more. Dai Lanh is known for Dai Lanh Beach and the Dai Lanh Lighthouse. The best time to travel to Dai Lanh, Vietnam, is from January to April, with average air temperatures around 24-28°C (75-82°F) and water temperatures around 25-27°C (77-81°F). Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!