Broadwater, Australia offers 2 beaches perfect for sunbathing, surfing, swimming, and more. Broadwater, Western Australia, Australia, is known for its proximity to the stunning Geographe Bay and the nearby Busselton Jetty. The best time to travel to Broadwater, Australia, is from December to February, with average air temperatures around 25-30°C (77-86°F) and water temperatures around 24-26°C (75-79°F). Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!