Costanera Rio Grande, Argentina offers 1 beach perfect for sunbathing, surfing, swimming, and more. Costanera Rio Grande is known for its scenic waterfront views and proximity to the natural beauty of Tierra del Fuego. The best time to travel to Costanera Rio Grande, Argentina, is during the summer months of December to February, when the average air temperature is around 55°F (13°C) and the water temperature is approximately 50°F (10°C). Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!