Hither Hills State Park offers visitors scenic picnic areas and fireplaces, sport fishing, a sandy ocean beach, playing fields, a playground and a 168-site campground on the ocean. Anglers can fish year-round and obtain permits to fish at night. The unique "walking dunes" of Napeague Harbor are located on the eastern boundary of the park, which also has woodlands filled with Russian olive, oak, shad and pine trees. Bridle paths and hiking, nature, biking and cross-country ski trails are available.

Dogs allowed. Access in certain areas of the park only, on a leash not more than 6 feet: north of Montauk Parkway, East of Napeague Harbor and west of overlook parking. Not allowed in camping, bathing and picnic areas. Not allowed in buildings or on walkways.