Kewaunee, United States offers 3 beaches perfect for sunbathing, surfing, swimming, and more. Kewaunee is known for the Kewaunee Pierhead Lighthouse and the Tug Ludington. The best time to travel to Kewaunee, 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 is approximately 60-70°F. Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!