Mackinaw City, United States offers 7 beaches perfect for sunbathing, surfing, swimming, and more. Mackinaw City is known for the Mackinac Bridge, Fort Michilimackinac, and the Old Mackinac Point Lighthouse. The best time to travel to Mackinaw City is in late June to early September, with average air temperatures around 65-75°F and water temperatures in the mid-60s°F. Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!