Swansea, Australia offers 23 beaches perfect for sunbathing, surfing, swimming, and more. Swansea, Tasmania, Australia, is known for the Freycinet National Park and the stunning Wineglass Bay. The best time to travel to Swansea, Australia, is during the summer months of December to February, when the average air temperature is around 20-25°C (68-77°F) and the water temperature is approximately 18-21°C (64-70°F). Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!