Fremantle, Australia offers 1 beach perfect for sunbathing, surfing, swimming, and more. Fremantle is known for Fremantle Prison, Fremantle Markets, and the Western Australian Maritime Museum. The best time to travel to Fremantle, Australia, is from November to March, with average air temperatures around 25-30°C (77-86°F) and water temperatures around 20-22°C (68-72°F). Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!