Ilha Grande, Brazil offers 6 beaches perfect for sunbathing, surfing, swimming, and more. Ilha Grande is known for its stunning beaches, lush rainforests, and excellent hiking trails. The best time to travel to Ilha Grande, Brazil, is from April to September, when the average air temperature ranges from 20°C to 28°C (68°F to 82°F) and the water temperature is around 23°C to 26°C (73°F to 79°F). Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!