Union City, United States offers 2 beaches perfect for sunbathing, surfing, swimming, and more.  Union City, Pennsylvania, United States, is known for its historical significance and charming small-town atmosphere.  The best time to travel to Union City, United States, is in late spring (May), when the average air temperature is around 70°F (21°C) and the nearby water temperature is approximately 60°F (16°C).  Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!