Penn Township, United States offers 2 beaches perfect for sunbathing, surfing, swimming, and more. Penn Township, Pennsylvania, United States, is known for the Bushy Run Battlefield, a historic site commemorating a pivotal battle during Pontiac's War. The best time to travel to Penn Township, United States, is in late spring (May to June) when the average air temperature is around 60-75°F and water temperature in nearby lakes is approximately 60-70°F. Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!