Agua Boa, Brazil offers 2 beaches perfect for sunbathing, surfing, swimming, and more. Agua Boa is known for its beautiful Amazonian landscapes and river beaches. The best time to travel to Agua Boa, Brazil, is during the dry season from May to September, when the average air temperature ranges from 25°C to 30°C (77°F to 86°F) and water temperatures are pleasantly warm, typically around 26°C to 28°C (79°F to 82°F). Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!