Penna, Australia offers 1 beach perfect for sunbathing, surfing, swimming, and more. Penna, Tasmania, Australia, is known for its proximity to the historic town of Richmond and the Coal River Valley wine region. The best time to travel to Penna, Australia, is during the summer months of December to February, when the average air temperature is around 70-80°F (21-27°C) and the water temperature is approximately 68-72°F (20-22°C). Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!