Sandy Beach, Australia offers 3 beaches perfect for sunbathing, surfing, swimming, and more. Sandy Beach, New South Wales, Australia, is known for its proximity to the Solitary Islands Marine Park. The best time to travel to Sandy Beach, Australia, is from December to February, with average air temperatures around 25°C (77°F) and water temperatures about 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!