Nueva Atlantis, Argentina offers 6 beaches perfect for sunbathing, surfing, swimming, and more. Nueva Atlantis is known for its tranquil beaches and proximity to the popular seaside resort town of Mar de Ajo. The best time to travel to Nueva Atlantis, Argentina, is from December to February, with average air temperatures around 75°F (24°C) and water temperatures near 70°F (21°C). Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!