Skull Island, Australia offers 1 beach perfect for sunbathing, surfing, swimming, and more. Skull Island, Northern Territory, Australia, is known for its proximity to the Tiwi Islands and the unique cultural experiences offered by the Tiwi people. The best time to visit Skull Island, Australia, is during the dry season from May to October, with average air temperatures around 25°C (77°F) and water temperatures near 23°C (73°F). Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!