Copper Harbor, United States offers 7 beaches perfect for sunbathing, surfing, swimming, and more. Copper Harbor is known for its scenic Lake Superior shoreline, Fort Wilkins Historic State Park, and the Copper Harbor Lighthouse. The best time to travel to Copper Harbor is in July, when the average air temperature is around 70°F (21°C) and the 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!