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

Hourly forecast at zone center

Hourly wind and waves

Gusts peak near 21kts around 11:00 PM, with waves reaching 2.3ft around 11:00 PM.

Monday, October 12

Wind

2—14kts

Gusts up to:21kts

Wind: 2—14 kts; gusts 21 kts. Use left and right arrows to inspect hours; Escape to reset.

Hourly wind speed and gust forecastSustained wind is shown in cyan and gusts in blue-gray. Dashed lines show past conditions. Direction arrows show where the wind is traveling.010203012AM6AM12PM6PM

Waves

0—2ft

Period:2—3s

Waves: 0—2 ft; period 2—3 seconds. Use left and right arrows to inspect hours; Escape to reset.

Hourly wave height and period forecastWave height is shown in blue. The dashed line shows past conditions. Direction arrows show where the waves are traveling.0123412AM6AM12PM6PM

NOAA marine forecast

Text forecast

Updated 3:35pm EDT Oct 11, 2026

Through Early Evening

Light winds. Sunny. Waves 2 feet or less.

Tonight

Southwest wind 5 to 10 knots. Partly cloudy. Waves 2 feet or less.

Monday

East wind 10 to 15 knots. Mostly cloudy. Waves 2 feet or less.

Monday Night

East wind 10 to 15 knots. Rain showers and a chance of thunderstorms. Waves 2 feet or less.

Tuesday

Northeast wind 10 to 15 knots. Rain showers. Waves 2 feet or less.

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Interactive Mapbox map highlighting marine forecast zone LHZ345.