Armacao, Brazil offers 5 beaches perfect for sunbathing, surfing, swimming, and more. Armacao, Santa Catarina, Brazil, is known for its beautiful beaches and the Santa Catarina Island. The best time to travel to Armacao, Brazil, is from December to March, with average air temperatures around 80°F (27°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!