Petrolina, Brazil offers 2 beaches perfect for sunbathing, surfing, swimming, and more. Petrolina is known for the Sao Francisco River and the Vale do Sao Francisco wine region. The best time to travel to Petrolina, Brazil, is from May to September, with average air temperatures around 25°C (77°F) and water temperatures near 24°C (75°F). Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!