About Grand Portage Marina and RV Campground
The 27-slip Marina on Grand Portage Bay is located adjacent to Grand Portage Lodge & Casino and is owned and operated by the Grand Portage Band of the Chippewa. The Marina is centrally located on Lake Superior between Thunder Bay, Ontario and Grand Marais, Minnesota within a shallow, protected bay. Open early May through October, the Marina provides services for fishing and boating. Michigan fishing licenses (required if fishing out of Isle Royale), slip rentals, ramp launching, landing facilities, gas and tackle sales are available.



Einrichtungen
COORDINATES
47.95636 N, 89.6902 W
Port Information
Telefon
Berth Sizes
< 10m
Tiefe bei MLW
< 2m
Manövrierbarkeit
Fair
Channel Marking
Fair
Einreisehafen
No
Overseas Visitor Berths
Yes
Stegart
Fixed
Style Stern To
Yes
Tidal Flow
Negligible
Active Winter
No
Weather Forecast
Mon
5AM - 9AM
27 July 2026
- NE 3–7 knots.
- 16 to 18°C
- Calm sea
- UV Index: 0 - Low
- Chance of showers
Mon
9AM - 1PM
27 July 2026
- NE 5–8 knots.
- Increasing from 18 to 22°C
- Calm sea
- UV Index: 7 - High
- Partly cloudy
Mon
1PM - 5PM
27 July 2026
- E 7 knots decreasing to SE 5 knots.
- 21 to 24°C
- Calm sea
- UV Index: 7 - High
- Sunny