Puerto San Julian, Argentina offers 10 beaches perfect for sunbathing, surfing, swimming, and more. Puerto San Julian is known for its historical significance as the landing site of Ferdinand Magellan during his circumnavigation of the globe. The best time to travel to Puerto San Julian, Argentina, is from December to February, with average air temperatures around 18°C (64°F) and water temperatures near 14°C (57°F). Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!