Curtis Island, Australia offers 1 beach perfect for sunbathing, surfing, swimming, and more. Curtis Island, Queensland, Australia, is known for the Curtis Island National Park and its proximity to the Great Barrier Reef. The best time to visit Curtis Island, Australia, is from May to October, when the average air temperature is around 20-25°C (68-77°F) and the water temperature is 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!