Hayman Island, Australia offers 1 beach perfect for sunbathing, surfing, swimming, and more. Hayman Island is known for its luxurious Hayman Island Resort and its proximity to the Great Barrier Reef. The best time to visit Hayman Island, Australia, is from May to September, when the average air temperature is around 23-26°C (73-79°F) and the water temperature is approximately 23-25°C (73-77°F). Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!