Hillarys, Australia offers 2 beaches perfect for sunbathing, surfing, swimming, and more. Hillarys is known for Hillarys Boat Harbour, AQWA (the Aquarium of Western Australia), and Sorrento Quay Boardwalk. The best time to visit Hillarys, Australia, is from November to March, with average air temperatures around 25-30°C (77-86°F) and water temperatures around 20-23°C (68-73°F). Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!