Itaguai, Brazil offers 1 beach perfect for sunbathing, surfing, swimming, and more. Itaguai is known for its proximity to beautiful beaches and natural attractions in the Rio de Janeiro area. The best time to travel to Itaguaí, Brazil, is from May to September, when the average air temperature ranges from 18°C to 26°C (64°F to 79°F) and the water temperature is around 22°C to 24°C (72°F to 75°F). Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!