Isle Royale National Park - United States

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About Isle Royale National Park

RV quick facts for Isle Royale National Park

DetailInformation
Road restrictionsNo roads or vehicles on the island. RVs must remain at the mainland departure port.
Full hookupsNone inside the park. RV hookups are only available at private campgrounds near Houghton, Copper Harbor, and Grand Portage.
Dump stationNone in the park. Use dump stations at mainland campgrounds before ferry departure.
Cell serviceUnreliable on the island. Plan to be off-grid during the visit.
Reservation windowRanger III ferry reservations open through pay.gov; group camping requests open October 1 for the following season.
Ferry accessRanger III from Houghton, MI; Isle Royale Queen IV from Copper Harbor, MI; Voyageur II and Sea Hunter from Grand Portage, MN.
PetsDogs, cats, and other pets are prohibited anywhere in the park, including on private boats within park boundaries.
Park seasonPark is open April 16 through October 31 each year. Ferry service generally runs early May through late September or early October.

Featured RV rentals for Isle Royale National Park

Best time to visit Isle Royale National Park

Mid-July through August offers the warmest weather, fully operational ferry schedules, and the best conditions for hiking and paddling the island. June is quieter but bug pressure is high, as mosquitos and black flies peak in June or July and can continue into August. Early September is an excellent shoulder window for RVers, with cooler nights, fewer crowds, and ferries still running before the park closes for winter. May and October are transitional with limited ferry service and unpredictable Lake Superior weather.

Jan 40 mm
19°F - 3°F

Park closed to all visitors.

Feb 30 mm
21°F - 5°F

Park closed to all visitors.

Mar 40 mm
30°F - 14°F

Park closed to all visitors.

Apr 50 mm
41°F - 27°F

Park closed until April 16; no ferry service, access by private boat or seaplane only.

May 60 mm
54°F - 37°F

Limited ferry service begins mid-month.

Jun 70 mm
64°F - 46°F

Peak blackfly and mosquito season begins.

Jul 70 mm
72°F - 54°F

Peak visitation; reserve ferries well in advance.

Aug 80 mm
70°F - 54°F

Warmest water; ideal for paddling.

Sep 80 mm
59°F - 46°F

Cool, quiet shoulder season; ferries taper off.

Oct 80 mm
46°F - 37°F

Ferry service ends early month; park closes October 31.

Nov 60 mm
34°F - 25°F

Park closed to all visitors.

Dec 50 mm
25°F - 10°F

Park closed to all visitors.

Things to do at Isle Royale National Park

  • Rock Harbor Area Day Hikes Easy

    Rock Harbor is the main visitor hub on the northeast end of the island, with short trails to Scoville Point, Suzy's Cave, and Lookout Louise. Day hikers arriving on the Ranger III or Isle Royale Queen IV can explore multiple loops within a few miles of the dock. nps.gov/isro/planyourvisit/camping.htm

  • Greenstone Ridge Trail Strenuous

    The Greenstone Ridge Trail is the island's signature long-distance hike, running about 40 miles along the spine of Isle Royale from Windigo to Rock Harbor. Most backpackers complete it in four to five days, using ferries to shuttle one-way between trailheads.

  • Paddling the Interior Lakes Moderate

    Isle Royale's inland lakes and sheltered coves are a premier canoe and kayak destination. Paddlers can bring a vessel on a ferry to an island transportation hub like Rock Harbor or Windigo and utilize the Voyageur II to enter the island's interior. nps.gov/tripideas/paddle-and-portage-interior-lakes-at-isle-royale.htm

  • Windigo Visitor Area Easy

    Windigo anchors the southwest end of the island and serves paddlers and hikers arriving from Grand Portage, Minnesota. The Voyageur II is a 65 foot twin engine diesel vessel that provides mail and passenger service, operating between Grand Portage, Minnesota and numerous drop-off and pick-up locations along the north and south shores of the island. nps.gov/isro/planyourvisit/voyageur-ii.htm

  • Scuba Diving Lake Superior Shipwrecks Strenuous

    Isle Royale preserves ten major shipwrecks in the cold, clear waters surrounding the island, making it one of the top freshwater dive destinations in North America. Dives require advanced certification, permits, and charter service from mainland operators.

  • Fishing Interior Lakes and Lake Superior Moderate

    Anglers can target lake trout and coaster brook trout in Lake Superior and northern pike, walleye, and perch in interior lakes. A State of Michigan fishing license is required to fish Lake Superior; a license is not needed for interior lakes and streams. nps.gov/tripideas/paddle-and-portage-interior-lakes-at-isle-royale.htm

  • Wildlife Watching Easy

    Isle Royale is famous for its long-running moose and wolf predator-prey study, and moose sightings are common along pond edges and quiet trail sections. Beaver, red fox, loons, and snowshoe hare are also frequently observed across the island.

  • Rock Harbor Lighthouse and Edisen Fishery Easy

    A short boat ride from Rock Harbor, visitors can tour the restored Rock Harbor Lighthouse and the historic Edisen Fishery, which interprets the island's commercial fishing heritage. Ranger-led boat tours connect the two sites during the summer season.

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RV Rentals Isle Royale National Park

Isle Royale National Park, MI, United States

How to get to Isle Royale National Park

RV travelers stage at one of three mainland ports: Houghton, Michigan (the park headquarters), Copper Harbor, Michigan, or Grand Portage, Minnesota, then ride a passenger ferry or seaplane across Lake Superior. Houghton is roughly a 9 to 10 hour drive from Detroit and about 7 hours from Minneapolis, while Grand Portage sits near the Canadian border about 4.5 hours northeast of Duluth. The Isle Royale Queen IV passenger ferry operates between Copper Harbor, Michigan and Rock Harbor on the northeast end of Isle Royale National Park, and there is no car ferry service. RVs must be parked at the mainland port for the duration of the visit; the nearest commercial airports for fly-and-rent trips are Houghton County Memorial (CMX) and Duluth International (DLH).

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