Mar de Ajo, Argentina offers 6 beaches perfect for sunbathing, surfing, swimming, and more. Mar de Ajo is known for its beautiful beaches and the iconic Mar de Ajo Lighthouse. The best time to travel to Mar de Ajo, 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!