Mar del Tuyu, Argentina offers 6 beaches perfect for sunbathing, surfing, swimming, and more. Mar del Tuyu, Buenos Aires, Argentina, is known for its proximity to the popular seaside resort town of San Clemente del Tuyu and the Mundo Marino marine park. The best time to travel to Mar del Tuyu, 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!