Mandacaru, Brazil offers 1 beach perfect for sunbathing, surfing, swimming, and more. Mandacaru is known for its proximity to the stunning Lençóis Maranhenses National Park, offering unique beach and dune landscapes. The best time to travel to Mandacaru, Brazil, is from July to September, when the average air temperature is around 27°C (81°F) and the water temperature is approximately 26°C (79°F). Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!