Rowleys Bay, United States offers 2 beaches perfect for sunbathing, surfing, swimming, and more. Rowleys Bay, Wisconsin, United States, is known for its proximity to the Door County Peninsula and the scenic beauty of Newport State Park. The best time to travel to Rowleys Bay, United States, is during the summer months of June to August, when the average air temperature is around 70-75°F and the water temperature is approximately 60-65°F. Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!