National Park Service · Michigan
Duncan Bay Campground
National Park Service · Michigan, United States · in Isle Royale National Park
- Sites
- 3
- Drinking water
- No
- Restrooms
- Yes
- Showers
- No
- Dump station
- No
- Laundry
- No
- Elevation
- 594 ft
- Dark sky
- Bortle class 1
- Cell coverage
- T-Mobile none · AT&T none · Verizon none (carriers' 4G LTE filings to the FCC, 2025-12; not measured here)
- Lake
- Isle Royale National Park
- Nearest town
- Houghton
- Address
- Houghton, MI, 49931
- Phone
- (906) 482-0984
About
Duncan Bay Campground is located on the west end of Duncan Bay, on the northeast end of Isle Royale National Park. Boats can stay overnight at dock.
Stay Limit: 3 nights from June 2 – Labor Day annually.
Shelters: 2
Depth at dock (normal conditions): 6’
Access: Canoe/kayak/private boat
Fees
Small-party Camping (6 people or less): free. No fee for small-party camping. A free overnight permit is required.
Weather, month by month
| Month | Typical high | Typical low | Coldest night | Hottest day | Years with a night below 32°F |
|---|---|---|---|---|---|
| January | 24° | 14° | -7° | 37° | 11 of 11 |
| February | 24° | 13° | -4° | 39° | 11 of 11 |
| March | 32° | 24° | 6° | 39° | 11 of 11 |
| April | 36° | 31° | 17° | 42° | 8 of 11 |
| May | 42° | 37° | 33° | 49° | 0 of 11 |
| June | 48° | 42° | 35° | 59° | 0 of 11 |
| July | 56° | 48° | 38° | 67° | 0 of 11 |
| August | 65° | 60° | 49° | 71° | 0 of 11 |
| September | 61° | 58° | 50° | 70° | 0 of 11 |
| October | 50° | 46° | 32° | 60° | 0 of 10 |
| November | 40° | 34° | 14° | 51° | 6 of 10 |
| December | 29° | 22° | 1° | 46° | 10 of 10 |
Mid-month figures from 2016–2026 of daily weather at this spot (ERA5 reanalysis via Open-Meteo, CC BY 4.0), in °F. Typical is the median; coldest and hottest are the extremes seen.
Nearby campgrounds
- Duncan Narrows Campground · National Park Service · 0 mi · 3 sites
- Rock Harbor Campground · National Park Service · 2 mi · 23 sites
- Merritt Lane Campground · National Park Service · 2 mi · 2 sites
- Tookers Island Campground · National Park Service · 3 mi · 2 sites
- Three Mile Campground · National Park Service · 4 mi · 15 sites
All public campgrounds in Michigan · Every state and province · Facts read from the operator 2026-02-25. Confirm fees, rules and current status with the operator before you go.