Wellington State Park boasts the largest freshwater swimming beach in the New Hampshire State Park system. Hiking trails and picnic areas along the shore afford views of one of the deepest and clearest lakes in the state. The park maintains volleyball and horseshoe courts. The Snack Bar offers a variety of snacks, ice cream, cold drinks, beach and picnic items, and souvenirs. Gas grills are allowed along with wood and/or charcoal fires for cooking.

Within the park, the peninsula nature trail features picnic areas, designated fishing areas, plant identification markers, and spectacular views of Newfound Lake and Cliff and Belle Islands. A well-marked hiking trail leads from the park and provides hikers access to Goose Pond, the Sugarloafs, Bear Mountain, Welton Falls, and Mt. Cardigan. A developed boat launch operated by New Hampshire Fish and Game adjoins the park, providing boaters free year-round access to Newfound Lake. Boat lanes along the beach allow boater access to the park for the regular admission price. The boat launch is open 24hrs / 7days a week. Kayak rentals are also available at the park store.

Due to the popularity of Wellington State Park’s beach area on nice weekends and holidays, the beach will most likely sell out in the morning hours. Once the beach area reaches capacity additional beachgoers cannot be admitted due to safety concerns.