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Grand Marais to Whitefish Point MI Marine Forecast

Updated 11:00pm EDT Aug 26, 2026
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Dense Fog Advisory In Effect Until 7 Am Edt Thursday
Small Craft Advisory In Effect From 5 Am Edt Thursday Through Thursday Evening
Rest Of Tonight
Northwest wind 10 to 20 knots. Cloudy. A slight chance of showers by midnight. Areas of dense fog by midnight, then patchy fog late. Waves 2 to 3 feet building to 3 to 5 feet occasionally to 7 feet.
Thursday
Northwest wind 15 to 25 knots. Mostly cloudy through mid morning then clearing. Patchy fog through mid morning. Waves building to 3 to 6 feet occasionally to 8 feet, then subsiding to 2 to 4 feet.
Thursday Night
Northwest wind 10 to 15 knots diminishing to less than 10 knots after midnight. Mostly clear. Waves subsiding to 1 to 2 feet.
Friday
Northwest wind less than 10 knots. Sunny. Waves calm to 1 foot.