Beaver Bay, United States offers 3 beaches perfect for sunbathing, surfing, swimming, and more. Beaver Bay is known for the Superior Hiking Trail and Split Rock Lighthouse State Park. The best time to travel to Beaver Bay, United States, 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!