Praia da Joana, Brazil offers 1 beach perfect for sunbathing, surfing, swimming, and more. Praia da Joana, Rio de Janeiro, Brazil, is known for its beautiful beaches and proximity to the vibrant city of Rio de Janeiro. The best time to travel to Praia da Joana, Brazil, is from May to September, with average air temperatures around 75°F (24°C) and water temperatures near 72°F (22°C). Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!