Osorio, Brazil offers 2 beaches perfect for sunbathing, surfing, swimming, and more. Osorio is known for its beautiful beaches and vibrant wind sports scene. The best time to travel to Osório, Brazil, is from December to March, when the average air temperature ranges from 75°F to 85°F (24°C to 29°C) and the water temperature is around 75°F (24°C). Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!