Mar de Cobo, Argentina offers 2 beaches perfect for sunbathing, surfing, swimming, and more. Mar de Cobo is known for its tranquil beaches and the nearby Mar Chiquita Lagoon, a UNESCO Biosphere Reserve. The best time to travel to Mar de Cobo, 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!