Pearl City, United States offers 2 beaches perfect for sunbathing, surfing, swimming, and more. Pearl City, Illinois, United States, is known for the Jane Addams Trail, a scenic recreational trail popular among hikers and cyclists. The best time to travel to Pearl City, United States, is from April to June, with average air temperatures around 75°F (24°C) and water temperatures near 77°F (25°C). Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!