Harrington Beach State Park is a 715-acre park with more than one mile of Lake Michigan shoreline. Explore the park by hiking or biking the many trails, or take a more relaxing approach and sunbathe, swim, picnic, bird watch, or fish. The park also offers monthly viewings in their observatory. Vehicle admission sticker required for entrance.

Harrington Beach State Park has 69 campsites, including 31 electrical sites, 33 non-electrical sites, and three first-come, first-serve sites. There is also a non-electric group campsite, non-electric kayak campsite, and an accessible cabin. Each campsite includes a campfire ring and picnic table. Showers, flush toilets and laundry facilities are available during the warmer months. The park also has a freshwater fill-up station and trailer dump station. Firewood is available for purchase at the park office.