San Antonio Este, Argentina offers 1 beach perfect for sunbathing, surfing, swimming, and more. San Antonio Este is known for its proximity to the stunning beaches of Las Grutas. The best time to travel to San Antonio Este, Argentina, is from December to February, with average air temperatures around 75°F (24°C) and water temperatures near 68°F (20°C). Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!