Mount Rooper, Australia offers 3 beaches perfect for sunbathing, surfing, swimming, and more. Mount Rooper, Queensland, Australia, is known for its proximity to the Whitsunday Islands and the Great Barrier Reef. The best time to travel to Mount Rooper, Australia, is from May to September, with average air temperatures around 20-25°C (68-77°F) and water temperatures around 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!