Munising to Grand Marais MI Marine Forecast

Hourly forecast at zone center

Hourly wind and waves

Gusts peak near 29kts around 12:00 AM, with waves reaching 4.7ft around 1:00 AM.

Sunday, October 11

1:40 PM CDT

Wind Now

15ktsS

Gusts:26kts

Wind Now: 15 kts; gusts 26 kts. Use left and right arrows to inspect hours; Escape to reset.

Waves Now

3.1ftSSW

Period3s

Waves Now: 3.1 ft; period 3 seconds. Use left and right arrows to inspect hours; Escape to reset.

NOAA marine forecast

Text forecast

Updated 11:01am EDT Oct 11, 2026

Small Craft Advisory In Effect Until 5 Pm Edt This Afternoon

Rest Of Today

South wind 10 to 20 knots with gusts up to 31 knots. Sunny. Waves 2 to 3 feet subsiding to 1 to 2 feet.

Tonight

South wind 10 to 15 knots veering southwest by midnight, then veering north late. Mostly clear through late evening then becoming mostly cloudy. Waves 1 to 2 feet.

Monday

Northeast wind 10 to 20 knots. Cloudy with a slight chance of showers. Waves building to 3 to 6 feet occasionally to 8 feet.

Monday Night

Northeast wind 10 to 20 knots. Cloudy. A chance of showers in the evening, then showers and a slight chance of thunderstorms after midnight. Waves subsiding to 2 to 4 feet.

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Interactive Mapbox map highlighting marine forecast zone LSZ250.