Hinchinbrook, Australia offers 3 beaches perfect for sunbathing, surfing, swimming, and more. Hinchinbrook, Queensland, Australia, is known for the Hinchinbrook Island National Park and the Great Barrier Reef. The best time to travel to Hinchinbrook, Australia, is from May to September, with average air temperatures around 20-25°C (68-77°F) and water temperatures around 23-26°C (73-79°F). Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!