Knife River, United States offers 1 beach perfect for sunbathing, surfing, swimming, and more. Knife River, Minnesota, United States, is known for its picturesque harbor and access to Lake Superior's North Shore. The best time to travel to Knife River, United States, is during the summer months of June to August, when the average air temperature is around 65-75°F and the water temperature is approximately 55-65°F. Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!
