950
FZUS53 KDTX 271358
NSHDTX

Nearshore Marine Forecast for Michigan
National Weather Service Detroit/Pontiac MI
958 AM EDT Wed Aug 27 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.

LHZ422-272200-
Inner Saginaw Bay SW of Point Au Gres to Bay Port MI-
958 AM EDT Wed Aug 27 2025

.REST OF TODAY...West winds 5 to 10 knots becoming southwest
10 to 15 knots in the afternoon. Sunny late in the morning
becoming partly cloudy. Waves 2 feet or less.
.TONIGHT...West winds 10 to 15 knots becoming southwest 15 to
20 knots in the late evening and overnight. Partly cloudy until
early morning becoming mostly cloudy. A chance of showers and a
slight chance of thunderstorms after midnight. Waves 1 to 3 feet.
.THURSDAY...West winds 15 to 20 knots veering to the north early
in the afternoon. A chance of waterspouts until late afternoon.
Light showers and a chance of thunderstorms until late afternoon,
then partly cloudy with a chance of showers early in the
afternoon. Waves 1 to 3 feet.
.THURSDAY NIGHT...North winds 20 to 25 knots diminishing to 15 to 20
knots in the late evening and overnight. Mostly clear. A chance of
showers early in the evening. Waves 2 to 4 feet subsiding to 1 to 3
feet after midnight. A Small Craft Advisory may be needed.

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

$$

LHZ421-272200-
Outer Saginaw Bay SW of Alabaster to Port Austin MI to Inner
Saginaw Bay-
958 AM EDT Wed Aug 27 2025

.REST OF TODAY...West winds 5 to 10 knots becoming southwest
10 to 15 knots in the afternoon. Sunny late in the morning
becoming partly cloudy. Waves 2 feet or less.
.TONIGHT...Southwest winds 10 to 15 knots becoming west 15 to
20 knots in the late evening and overnight. Partly cloudy until
early morning, then mostly cloudy with a chance of showers and a
slight chance of thunderstorms after midnight. A slight chance of
waterspouts after midnight. Waves 1 to 3 feet building to 3 to
5 feet after midnight. Waves occasionally around 7 feet.
.THURSDAY...West winds 15 to 20 knots becoming north 20 to
25 knots with gusts to 30 knots early in the afternoon. Becoming
partly cloudy early in the afternoon. A chance of waterspouts
until late afternoon. Light showers and a chance of
thunderstorms. Waves 3 to 5 feet building to 6 to 9 feet early in
the afternoon. Waves occasionally around 12 feet.
.THURSDAY NIGHT...North winds 20 to 25 knots with gusts to
30 knots diminishing to 15 to 20 knots after midnight. Mostly
clear. A chance of showers early in the evening. Waves 5 to
7 feet. Waves occasionally around 10 feet.

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

$$

LHZ441-272200-
Port Austin to Harbor Beach MI-
958 AM EDT Wed Aug 27 2025

.REST OF TODAY...West winds 5 to 10 knots increasing to 10 to
15 knots in the afternoon. Mostly sunny. Waves 1 to 3 feet.
.TONIGHT...Southwest winds 10 to 15 knots increasing to 15 to
20 knots in the late evening and overnight. Partly cloudy until
early morning, then mostly cloudy with a chance of showers and a
slight chance of thunderstorms after midnight. Waves 1 to 3 feet
building to 2 to 4 feet after midnight.
.THURSDAY...West winds 15 to 20 knots becoming north 20 to 25 knots
with gusts to 30 knots early in the afternoon. Becoming partly cloudy
early in the afternoon. A chance of waterspouts until late afternoon.
Light showers and a chance of thunderstorms until late afternoon,
then a chance of showers early in the afternoon. Waves 3 to 5 feet
building to 6 to 9 feet early in the afternoon. Waves occasionally
around 12 feet. A Small Craft Advisory may be needed.
.THURSDAY NIGHT...North winds 20 to 25 knots with gusts to
30 knots diminishing to 15 to 20 knots after midnight. Partly
cloudy. A chance of showers early in the evening. Waves 5 to
7 feet. Waves occasionally around 10 feet.

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

$$

LHZ442-272200-
Harbor Beach to Port Sanilac MI-
958 AM EDT Wed Aug 27 2025

.REST OF TODAY...West winds 5 to 10 knots. Mostly sunny. Waves
2 feet or less.
.TONIGHT...Southwest winds 10 to 15 knots. Partly cloudy until
early morning becoming mostly cloudy. A chance of showers after
midnight. Waves 2 feet or less.
.THURSDAY...West winds 15 to 20 knots becoming north 20 to 25 knots
with gusts to 30 knots early in the afternoon. Light showers and a
chance of thunderstorms until late afternoon, then showers likely and
a chance of thunderstorms early in the afternoon. A slight chance of
waterspouts early in the morning. A chance of waterspouts in the late
morning and afternoon. Waves 1 to 3 feet building to 5 to 7 feet
early in the afternoon. Waves occasionally around 10 feet. A Small
Craft Advisory may be needed.
.THURSDAY NIGHT...North winds 20 to 25 knots with gusts to
30 knots diminishing to 10 to 15 knots. Partly cloudy. Waves 5 to
7 feet. Waves occasionally around 10 feet.

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

$$

LHZ443-272200-
Port Sanilac to Port Huron MI-
958 AM EDT Wed Aug 27 2025

.REST OF TODAY...West winds 5 to 10 knots. Mostly sunny. Waves
2 feet or less.
.TONIGHT...Southwest winds 5 to 10 knots increasing to 10 to
15 knots in the late evening and overnight. Partly cloudy. A
slight chance of showers after midnight. Waves 2 feet or less.
.THURSDAY...Southwest winds 15 to 20 knots becoming northwest 20 to
25 knots early in the afternoon. Light showers and a slight chance of
thunderstorms until late afternoon, then showers and a chance of
thunderstorms early in the afternoon. A chance of waterspouts in the
late morning and afternoon. Waves 1 to 3 feet building to 3 to 5 feet
early in the afternoon. Waves occasionally around 7 feet. A Small
Craft Advisory may be needed.
.THURSDAY NIGHT...North winds 20 to 25 knots diminishing to 10 to
15 knots. Partly cloudy. Waves 4 to 6 feet. Waves occasionally
around 7 feet.

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

$$

LEZ444-272200-
Michigan Waters of Lake Erie from Detroit River to North Cape MI-
958 AM EDT Wed Aug 27 2025

.REST OF TODAY...West winds 5 to 10 knots. Mostly sunny. Waves
2 feet or less.
.TONIGHT...Southwest winds 10 to 15 knots. Partly cloudy. Waves
2 feet or less.
.THURSDAY...Southwest winds 15 to 20 knots. Partly cloudy early
in the morning. Light showers likely until late afternoon. Light
showers and a chance of thunderstorms early in the afternoon.
Waves 1 to 3 feet.
.THURSDAY NIGHT...Northwest winds 10 to 15 knots veering to the
north in the late evening and overnight. Partly cloudy. A chance
of thunderstorms early in the evening. A chance of waterspouts
early in the evening. Waves 2 feet or less.

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

The water temperature at Belle Isle is 70 degrees.

$$

MV

You can obtain your latest National Weather Service forecasts online
a www.weather.gov/greatlakes