Minster, United States offers 1 beach perfect for sunbathing, surfing, swimming, and more. Minster, Ohio, United States, is not particularly known for travel and beach tourism. The best time to travel to Minster, United States, is in late spring or early fall when the average air temperature is around 60-70°F, and water temperatures in nearby lakes are approximately 60°F. Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!