Ida Bay, Australia offers 1 beach perfect for sunbathing, surfing, swimming, and more. Ida Bay, Tasmania, Australia, is known for the Ida Bay Railway, a historic heritage railway offering scenic rides through the Tasmanian wilderness. The best time to travel to Ida Bay, 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 16-18°C (61-64°F). Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!