Waukegan, United States offers 1 beach perfect for sunbathing, surfing, swimming, and more. Waukegan is known for the Genesee Theatre and the Waukegan Harbor. The best time to travel to Waukegan is in late spring or early fall when the average air temperature is around 60-70°F and the water temperature in Lake Michigan is approximately 50-60°F. Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!