Mansfield, United States offers 1 beach perfect for sunbathing, surfing, swimming, and more. Mansfield, Ohio, United States, is known for the Ohio State Reformatory, where the movie "The Shawshank Redemption" was filmed. The best time to travel to Mansfield, United States, is in late spring (May), when the average air temperature is around 65°F (18°C) and 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!