Seventeen Seventy, Australia offers 3 beaches perfect for sunbathing, surfing, swimming, and more. Seventeen Seventy, Queensland, Australia, is known for its proximity to the Great Barrier Reef and the historic landing site of Captain James Cook. The best time to travel to Seventeen Seventy, Australia, is from May to October, with average air temperatures around 20-25°C (68-77°F) and water temperatures approximately 22-25°C (72-77°F). Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!