Kenilworth, United States offers 1 beach perfect for sunbathing, surfing, swimming, and more. Kenilworth, Illinois, United States, is known for its historic architecture and proximity to the scenic Lake Michigan shoreline. The best time to travel to Kenilworth, United States, is in late spring (May), when the average air temperature is around 65°F (18°C) and water temperature is approximately 55°F (13°C). Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!