Yes, you can swim at Cape Henlopen State Park in Delaware, and in 2026, it remains one of the premier beach destinations on the U.S. East Coast. The park features a designated swimming beach located near the bathhouse, which is staffed by professional lifeguards during the peak summer season (typically Memorial Day through Labor Day). This area includes convenient amenities such as showers, changing rooms, and a snack bar. While swimming is technically possible in other areas of the park, visitors are strongly encouraged to stay within the guarded zones because the "Point" and the Delaware Bay side can have unpredictable currents and shifting sandbars. In 2026, new daily entrance fees are in effect ($10 for Delaware residents, $20 for out-of-state vehicles), so it is wise to arrive early, as the parking lots for the swimming beach often reach capacity by 10:00 AM on summer weekends.