FZUS53 KDTX 231939 NSHDTX Nearshore Marine Forecast for Michigan National Weather Service Detroit/Pontiac MI 339 PM EDT Sun Aug 23 2026 For waters within five nautical miles of shore Waves are the significant wave height - the average of the highest 1/3 of the wave spectrum. Occasional wave height is the average of the highest 1/10 of the wave spectrum. LHZ422-240345- Inner Saginaw Bay SW of Point Au Gres to Bay Port MI- 339 PM EDT Sun Aug 23 2026 ...SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE TONIGHT... .TONIGHT...Northwest winds to 30 knots diminishing to 20 to 25 knots with gusts to 30 knots in the late evening and overnight. Mostly clear in the evening, then mostly cloudy with a slight chance of showers after midnight. Waves 2 to 4 feet. .MONDAY...West winds 20 to 25 knots becoming northwest 15 to 20 knots early in the afternoon. Partly cloudy. Waves 2 to 4 feet subsiding to 1 to 3 feet early in the afternoon. .MONDAY NIGHT...Northwest winds 15 to 20 knots diminishing to 10 to 15 knots in the late evening and overnight. Partly cloudy. Waves 1 to 3 feet. .TUESDAY...Northwest winds 5 to 10 knots backing to the south early in the afternoon. Mostly sunny. Waves 2 feet or less. See Lake Huron Open Lake Forecast for days 3 through 5. $$ LHZ421-240345- Outer Saginaw Bay SW of Alabaster to Port Austin MI to Inner Saginaw Bay- 339 PM EDT Sun Aug 23 2026 ...SMALL CRAFT ADVISORY IN EFFECT THROUGH MONDAY AFTERNOON... .TONIGHT...Northwest winds 20 to 25 knots. Gusts to 30 knots early in the evening. Partly cloudy in the evening becoming cloudy. A slight chance of showers. Waves 4 to 6 feet. Waves occasionally around 7 feet. .MONDAY...Northwest winds 20 to 25 knots diminishing to 15 to 20 knots early in the afternoon. Mostly cloudy with a slight chance of showers early in the morning, then partly cloudy in the late morning and afternoon. Waves 4 to 6 feet. Waves occasionally around 8 feet. .MONDAY NIGHT...Northwest winds 10 to 15 knots. Mostly cloudy early in the evening becoming partly cloudy. Waves 3 to 5 feet subsiding to 2 to 4 feet after midnight. Waves occasionally around 7 feet. .TUESDAY...Northwest winds 5 to 10 knots backing to the south early in the afternoon. Partly cloudy early in the morning then clearing. Waves 2 feet or less. See Lake Huron Open Lake Forecast for days 3 through 5. $$ LHZ441-240345- Port Austin to Harbor Beach MI- 339 PM EDT Sun Aug 23 2026 ...SMALL CRAFT ADVISORY IN EFFECT THROUGH MONDAY AFTERNOON... .TONIGHT...Northwest winds 20 to 25 knots. Gusts to 30 knots early in the evening. Partly cloudy with a chance of showers and a slight chance of thunderstorms in the evening, then cloudy with showers likely and a slight chance of thunderstorms after midnight. Waves 6 to 9 feet. Waves occasionally around 12 feet. .MONDAY...Northwest winds 20 to 25 knots with gusts to 30 knots diminishing to 15 to 20 knots early in the afternoon. Mostly cloudy. A slight chance of showers early in the morning. Waves 5 to 7 feet. Waves occasionally around 10 feet. .MONDAY NIGHT...Northwest winds 15 to 20 knots diminishing to 10 to 15 knots in the late evening and overnight. Mostly cloudy early in the evening becoming partly cloudy. Waves 3 to 5 feet. Waves occasionally around 6 feet. .TUESDAY...Northwest winds 10 to 15 knots diminishing to 5 to 10 knots in the late morning and early afternoon, then veering to the northeast early in the afternoon. Mostly cloudy early in the morning then clearing. Waves 2 to 4 feet subsiding to 1 to 3 feet in the late morning and afternoon. See Lake Huron Open Lake Forecast for days 3 through 5. $$ LHZ442-240345- Harbor Beach to Port Sanilac MI- 339 PM EDT Sun Aug 23 2026 ...SMALL CRAFT ADVISORY IN EFFECT THROUGH MONDAY AFTERNOON... .TONIGHT...Northwest winds 15 to 20 knots. Partly cloudy in the evening becoming mostly cloudy. A chance of showers and a slight chance of thunderstorms. Waves 4 to 6 feet. Waves occasionally around 8 feet. .MONDAY...Northwest winds 15 to 20 knots. Gusts to 30 knots in the late morning and early afternoon. Mostly cloudy. A chance of showers early in the morning. Waves 3 to 5 feet. Waves occasionally around 7 feet. .MONDAY NIGHT...Northwest winds 10 to 15 knots. Partly cloudy. Waves 3 to 5 feet. Waves occasionally around 7 feet. .TUESDAY...Northwest winds 5 to 10 knots veering to the northeast early in the afternoon. Partly cloudy early in the morning then clearing. Waves 1 to 3 feet. See Lake Huron Open Lake Forecast for days 3 through 5. $$ LHZ443-240345- Port Sanilac to Port Huron MI- 339 PM EDT Sun Aug 23 2026 ...SMALL CRAFT ADVISORY IN EFFECT THROUGH MONDAY AFTERNOON... .TONIGHT...Northwest winds 15 to 20 knots. Partly cloudy with a chance of showers and thunderstorms in the evening, then mostly cloudy with a slight chance of showers after midnight. Waves 2 to 4 feet. .MONDAY...West winds 15 to 20 knots. Mostly cloudy. A slight chance of showers early in the morning. Waves 2 to 4 feet. .MONDAY NIGHT...Northwest winds 10 to 15 knots diminishing to 5 to 10 knots in the late evening and early morning, then increasing to 10 to 15 knots after midnight. Mostly cloudy early in the evening becoming mostly clear. Waves 1 to 3 feet. .TUESDAY...Northwest winds 5 to 10 knots veering to the northeast early in the afternoon. Mostly sunny. Waves 1 to 3 feet. See Lake Huron Open Lake Forecast for days 3 through 5. $$ LEZ444-240345- Michigan Waters of Lake Erie from Detroit River to North Cape MI- 339 PM EDT Sun Aug 23 2026 .TONIGHT...Northwest winds 15 to 20 knots diminishing to 10 to 15 knots after midnight. Mostly clear. Waves 1 to 3 feet. .MONDAY...West winds 10 to 15 knots. Mostly sunny. Waves 2 feet or less. .MONDAY NIGHT...Northwest winds 10 to 15 knots diminishing to 5 to 10 knots in the late evening and overnight. Mostly clear. Waves 2 feet or less. .TUESDAY...Northwest winds 5 to 10 knots early in the morning becoming light and variable, then becoming southwest 5 to 10 knots early in the afternoon. Mostly sunny. Waves 2 feet or less. See Lake Erie Open Lake Forecast for days 3 through 5. The water temperature at Belle Isle is 71 degrees. $$ AM You can obtain your latest National Weather Service forecasts online a www.weather.gov/greatlakes