Bay City, United States offers 1 beach perfect for sunbathing, surfing, swimming, and more. Bay City is known for the Tall Ship Celebration, Wenonah Park, and the Bay City State Park. The best time to travel to Bay City, United States, is during the summer months of June to August, when the average air temperature is around 70-80°F and the water temperature in nearby Saginaw Bay is approximately 65-75°F. Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!