Balneario Oceano, Argentina offers 2 beaches perfect for sunbathing, surfing, swimming, and more. Balneario Oceano, Buenos Aires, Argentina, is known for its beautiful beaches and vibrant coastal atmosphere. The best time to travel to Balneario Oceano, Argentina, is during the summer months of December to February, when the average air temperature is around 75°F (24°C) and the water temperature is approximately 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!