800
FZUS53 KDTX 091939
NSHDTX

Nearshore Marine Forecast for Michigan
National Weather Service Detroit/Pontiac MI
339 PM EDT Thu Oct 9 2025

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.

LHZ422-100345-
Inner Saginaw Bay SW of Point Au Gres to Bay Port MI-
339 PM EDT Thu Oct 9 2025

.TONIGHT...Southeast winds 5 to 10 knots becoming south 10 to
15 knots in the late evening and overnight. Clear. Waves 2 feet
or less.
.FRIDAY...South winds 10 to 15 knots increasing to 15 to 20 knots
in the late morning and afternoon. Partly cloudy. Waves 1 to
3 feet.
.FRIDAY NIGHT...Southwest winds 15 to 20 knots becoming west
10 to 15 knots in the late evening and overnight. Mostly cloudy
early in the evening becoming partly cloudy. Light showers likely
until early morning, then a chance of showers after midnight.
Waves 1 to 3 feet.
.SATURDAY...Northwest winds 10 to 15 knots veering to the
northeast in the late morning and afternoon. Partly cloudy with a
chance of showers. Waves 2 feet or less.

See Lake Huron Open Lake Forecast for days 3 through 5.

$$

LHZ421-100345-
Outer Saginaw Bay SW of Alabaster to Port Austin MI to Inner
Saginaw Bay-
339 PM EDT Thu Oct 9 2025

.TONIGHT...Southeast winds 5 to 10 knots becoming south 10 to
15 knots in the late evening and overnight. Clear. Waves 2 feet
or less.
.FRIDAY...South winds 10 to 15 knots increasing to 15 to 20 knots
in the late morning and afternoon. Partly cloudy. Waves 1 to
3 feet building to 2 to 4 feet early in the afternoon.
.FRIDAY NIGHT...Southwest winds 15 to 20 knots becoming west
10 to 15 knots after midnight. Mostly cloudy with showers likely
until early morning, then partly cloudy with a chance of showers
after midnight. Waves 2 to 4 feet subsiding to 1 to 3 feet in the
late evening and overnight.
.SATURDAY...Northwest winds 10 to 15 knots veering to the
northeast in the late morning and afternoon. Partly cloudy. A
chance of showers. Waves 1 to 3 feet.

See Lake Huron Open Lake Forecast for days 3 through 5.

$$

LHZ441-100345-
Port Austin to Harbor Beach MI-
339 PM EDT Thu Oct 9 2025

.TONIGHT...South winds 5 to 10 knots increasing to 10 to 15 knots
after midnight. Clear. Waves 2 feet or less.
.FRIDAY...South winds 10 to 15 knots increasing to 15 to 20 knots
early in the afternoon. Partly cloudy. Waves 1 to 3 feet.
.FRIDAY NIGHT...Southwest winds 15 to 20 knots diminishing to
10 to 15 knots after midnight. Becoming partly cloudy after
midnight. A chance of showers early in the evening, then showers
in the late evening and early morning. A chance of showers after
midnight. Waves 1 to 3 feet.
.SATURDAY...West winds 10 to 15 knots veering to the east in the
late morning and afternoon. Partly cloudy. A chance of showers.
Waves 1 to 3 feet.

See Lake Huron Open Lake Forecast for days 3 through 5.

$$

LHZ442-100345-
Harbor Beach to Port Sanilac MI-
339 PM EDT Thu Oct 9 2025

.TONIGHT...Southeast winds 5 to 10 knots becoming south 10 to
15 knots in the late evening and overnight. Clear. Waves 2 feet
or less.
.FRIDAY...South winds 10 to 15 knots increasing to 15 to 20 knots
early in the afternoon. Partly cloudy until late afternoon
becoming mostly sunny. Waves 1 to 3 feet.
.FRIDAY NIGHT...South winds 15 to 20 knots becoming southwest
10 to 15 knots after midnight. Mostly cloudy until early morning
becoming partly cloudy. A chance of showers early in the evening,
then showers likely in the late evening and early morning. A
chance of showers after midnight. Waves 2 to 4 feet subsiding to
1 to 3 feet after midnight.
.SATURDAY...Southwest winds 10 to 15 knots backing to the
southeast in the late morning and afternoon. Partly cloudy. A
chance of showers. A chance of waterspouts early in the
afternoon. Waves 1 to 3 feet.

See Lake Huron Open Lake Forecast for days 3 through 5.

$$

LHZ443-100345-
Port Sanilac to Port Huron MI-
339 PM EDT Thu Oct 9 2025

.TONIGHT...East winds 5 to 10 knots becoming southeast 10 to
15 knots in the late evening and overnight. Clear. Waves 2 feet
or less.
.FRIDAY...South winds 10 to 15 knots increasing to 15 to 20 knots
early in the afternoon. Partly cloudy early in the morning
becoming mostly sunny. A slight chance of. Waves 1 to 3 feet.
.FRIDAY NIGHT...South winds 15 to 20 knots becoming southwest
10 to 15 knots in the late evening and overnight. Partly cloudy
early in the evening becoming mostly cloudy. A chance of showers
in the late evening and overnight. Waves 2 to 4 feet subsiding to
1 to 3 feet in the late evening and overnight.
.SATURDAY...Southwest winds 10 to 15 knots backing to the
southeast in the late morning and afternoon. Partly cloudy. A
chance of showers. Waves 2 feet or less.

See Lake Huron Open Lake Forecast for days 3 through 5.

$$

LEZ444-100345-
Michigan Waters of Lake Erie from Detroit River to North Cape MI-
339 PM EDT Thu Oct 9 2025

.TONIGHT...Southeast winds 5 to 10 knots veering to the south
early in the morning. Mostly clear. Waves 2 feet or less.
.FRIDAY...South winds 5 to 10 knots becoming southwest 10 to
15 knots early in the afternoon. Mostly sunny. Waves 2 feet or
less.
.FRIDAY NIGHT...Southwest winds 10 to 15 knots. Partly cloudy
until early morning, then a chance of showers after midnight.
Waves 1 to 3 feet.
.SATURDAY...West winds 10 to 15 knots diminishing to 5 to
10 knots in the late morning and early afternoon, then veering to
the northwest early in the afternoon. Partly cloudy with a chance
of showers. Waves 2 feet or less.

See Lake Erie Open Lake Forecast for days 3 through 5.

The water temperature at Belle Isle is 65 degrees.

$$

KDK

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a www.weather.gov/greatlakes