Con Dao, Vietnam offers 14 beaches perfect for sunbathing, surfing, swimming, and more. Con Dao is known for its Con Dao National Park and the Con Dao Prison Complex. The best time to travel to Con Dao, Vietnam, is from March to September, with average air temperatures around 27-30°C (81-86°F) and water temperatures around 28-30°C (82-86°F). Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!