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: 323 PM EST Sun Dec 28 2025




Tonight: Southeast winds 10 to 15 knots becoming south 20 to 25 knots with gusts to 35 knot gales after midnight, then becoming southwest to 30 knots with gusts to 40 knot gales early in the morning. Rain showers and a slight chance of thunderstorms in the evening, then showers and a chance of light snow showers after midnight. Waves 3 to 5 feet building to 5 to 7 feet early in the morning. Waves occasionally around 10 feet.

Monday: West gales to 35 knot gales veering to the northwest at 35 knot gales early in the afternoon. Gusts to 50 knot storms. Light snow showers until late afternoon, then light snow showers likely early in the afternoon. Freezing spray in the late morning and afternoon. Waves 5 to 7 feet building to 10 to 14 feet early in the afternoon. Waves occasionally around 18 feet.

Monday Night: Northwest gales to 40 knot gales. Gusts to 50 knot storms diminishing to gusts to 40 knot gales after midnight. Mostly cloudy. Light snow showers likely early in the evening. A chance of light snow showers in the late evening and early morning. Freezing spray. Waves 12 to 16 feet. Waves occasionally around 20 feet.

Tuesday: Northwest winds to 30 knots with gusts to 35 knot gales becoming west 20 to 25 knots with gusts to 30 knots in the late morning and afternoon. Partly cloudy early in the morning becoming mostly cloudy. Freezing spray and a chance of until late afternoon. A chance of light snow in the late morning and afternoon. Waves 8 to 12 feet subsiding to 4 to 6 feet early in the afternoon. Waves occasionally around 15 feet.

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







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

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