Port Jefferson Beach East is located on the North Shore of Long Island, in the charming village of Port Jefferson, New York. The beach stretches for about 1/4 of a mile and is known for its soft, white sand. activities available at the beach include swimming, sunbathing, beach volleyball, and picnicking. The beach also has a playground area for children. Amenities at Port Jefferson Beach East include lifeguards on duty, restrooms, and showers. Dogs are not allowed on the beach.