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Straits of Mackinac within 5 nm of Mackinac Bridge including Mackinac Island Marine Forecast

Updated 3:48am EDT Aug 27, 2026
Zone Map
Today
Northwest wind 10 to 15 knots. Mostly cloudy early in the morning then clearing. Waves 2 feet or less.
Tonight
North wind 5 to 10 knots. Mostly clear. Waves 2 feet or less.
Friday
Northwest wind 5 to 10 knots. Sunny. Waves 2 feet or less.
Friday Night
Light winds. Partly cloudy. Waves 2 feet or less.