Notable island · Belknap, New Hampshire

Sumner Island

Sumner Island is an island in Belknap, New Hampshire.

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Sumner Island: crowds and conditions

Typical pattern: moderate; weekends busier. Been there recently? Post today’s status and it shows here for the next traveller.

Status options for this island: Water flowing well · Low flow / trickle · Dry, no water · Entry closed.

Best time to visit Sumner Island

Season: September to February; boat services pause in floods.

Busiest days: Weekends and long holidays.

Crowd: Moderate; weekends busier.

Typical week: Mon light · Tue light · Wed light · Thu light · Fri light · Sat busy · Sun busy.

How to reach Sumner Island — distance from nearby cities

    Coordinates: 43.55375, -71.72028. Road distances are estimates; the road-trip planner uses real routes and adds stops worth the detour.

    Places to visit near Sumner Island

    See everything within a day’s drive of Sumner Island

    Other rivers, islands & mangroves near Sumner Island

    All rivers, islands & mangroves in New Hampshire

    Map data © OpenStreetMap contributors (ODbL)

    Frequently asked

    What is the best time to visit Sumner Island?

    September to February; boat services pause in floods. Moderate; weekends busier.

    What are the places to visit near Sumner Island?

    Nearby: Ayer Island Station Pond (lake, 9 km), Webster Lake (lake, 12 km), Pemigewasset Lake (lake, 15 km), Dana Meeting House (fort, 15 km), Newfound Lake (lake, 16 km), Ragged Mountain (viewpoint, 17 km).

    Is Sumner Island worth visiting?

    Sumner Island is listed as a notable island in New Hampshire on Spotwander.