Arroio do Sal, Brazil offers 8 beaches perfect for sunbathing, surfing, swimming, and more. Arroio do Sal is known for its beautiful beaches and the annual Festa do Peixe. The best time to travel to Arroio do Sal, Brazil, is from December to March, with average air temperatures around 75°F (24°C) and water temperatures near 77°F (25°C). Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!