Rondinha, Brazil offers 2 beaches perfect for sunbathing, surfing, swimming, and more. Rondinha, Rio Grande do Sul, Brazil, is known for its proximity to the scenic Serra Gaucha region and its cultural events like the Festa do Colono. The best time to travel to Rondinha, 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!