Lang Co, Vietnam offers 3 beaches perfect for sunbathing, surfing, swimming, and more. Lang Co is known for Lang Co Beach and the nearby Bach Ma National Park. The best time to travel to Lang Co, Vietnam, is from March to August, with average air temperatures around 27-32°C (81-90°F) and water temperatures around 25-30°C (77-86°F). Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!