Coastal Waters Forecast for Harbor Beach to Port Sanilac MI (LHZ442) (Text-Only)
NWS Forecast for: Harbor Beach to Port Sanilac MI (LHZ442)
Issued by: National Weather Service Detroit/Pontiac, MI
Last Update: 310 PM EDT Mon Apr 27 2026




Tonight: Southeast winds 15 to 20 knots increasing to 20 to 25 knots in the late evening and overnight. Gusts to 30 knots. Cloudy. A chance of showers in the evening, then a chance of showers and thunderstorms after midnight. Waves 4 to 6 feet building to 5 to 7 feet after midnight. Waves occasionally around 10 feet.

Tuesday: South winds 20 to 25 knots with gusts to 30 knots becoming southwest 15 to 20 knots in the late morning and afternoon. Cloudy with showers likely and a chance of thunderstorms early in the morning, then partly cloudy with a slight chance of showers in the late morning and early afternoon. Partly cloudy early in the afternoon. Waves 5 to 7 feet subsiding to 2 to 4 feet early in the afternoon. Waves occasionally around 10 feet.

Tuesday Night: West winds 10 to 15 knots becoming north 5 to 10 knots in the late evening and overnight. Partly cloudy early in the evening becoming mostly cloudy. Waves 2 feet or less.

Wednesday: North winds 10 to 15 knots increasing to 15 to 20 knots early in the afternoon. Mostly cloudy until late afternoon becoming partly cloudy. A chance of showers until late afternoon. Waves 1 to 3 feet building to 2 to 4 feet early in the afternoon.

see lake huron open lake forecast for days 3 through 5.







Zone Forecast: Harbor Beach to Port Sanilac MI (LHZ442)

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