947
FZUS53 KDTX 020734
NSHDTX

Nearshore Marine Forecast for Michigan
National Weather Service Detroit/Pontiac MI
334 AM EDT Tue Sep 2 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.

LHZ422-021545-
Inner Saginaw Bay SW of Point Au Gres to Bay Port MI-
334 AM EDT Tue Sep 2 2025

.TODAY...Light and variable winds becoming south 5 to 10 knots
early in the afternoon, then backing to the east late in the
afternoon. Mostly sunny. Waves 2 feet or less.
.TONIGHT...Southeast winds 5 to 10 knots becoming south 10 to
15 knots in the late evening and overnight. Mostly clear. Waves
2 feet or less.
.WEDNESDAY...Southwest winds 10 to 15 knots increasing to 15 to
20 knots in the late morning and afternoon. Mostly sunny becoming
partly cloudy in the late morning and early afternoon becoming
mostly cloudy. A chance of showers in the late morning and early
afternoon. A chance of showers and thunderstorms early in the
afternoon. Waves 1 to 3 feet building to 2 to 4 feet early in the
afternoon.
.WEDNESDAY NIGHT...Southwest winds 15 to 20 knots veering to the
west after midnight. Rain showers and a chance of thunderstorms
until early morning, then showers likely after midnight. Waves
2 to 4 feet.

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

$$

LHZ421-021545-
Outer Saginaw Bay SW of Alabaster to Port Austin MI to Inner
Saginaw Bay-
334 AM EDT Tue Sep 2 2025

.TODAY...Southwest winds 5 to 10 knots backing to the southeast
late in the afternoon. Mostly sunny. Waves 2 feet or less.
.TONIGHT...Southeast winds 5 to 10 knots becoming south 10 to
15 knots in the late evening and overnight. Mostly clear. Waves
2 feet or less.
.WEDNESDAY...Southwest winds 10 to 15 knots increasing to 15 to
20 knots in the late morning and afternoon. Mostly sunny early in
the morning, then partly cloudy with a chance of showers in the
late morning and early afternoon. Mostly cloudy with a chance of
showers early in the afternoon. Waves 1 to 3 feet building to
2 to 4 feet early in the afternoon.
.WEDNESDAY NIGHT...Southwest winds 15 to 20 knots veering to the west
after midnight. Rain showers and a chance of thunderstorms until
early morning, then showers likely after midnight. Waves 3 to 5 feet.
Waves occasionally around 7 feet. A Small Craft Advisory may be
needed.

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

$$

LHZ441-021545-
Port Austin to Harbor Beach MI-
334 AM EDT Tue Sep 2 2025

.TODAY...Southwest winds 5 to 10 knots early in the morning
becoming light and variable, then becoming east 5 to 10 knots
late in the afternoon. Mostly sunny. Waves 2 feet or less.
.TONIGHT...Southeast winds 5 to 10 knots becoming south 10 to
15 knots in the late evening and overnight. Mostly clear. Waves
2 feet or less.
.WEDNESDAY...Southwest winds 10 to 15 knots increasing to 15 to
20 knots early in the afternoon. Mostly sunny until late
afternoon, then mostly cloudy with a chance of showers early in
the afternoon. Waves 1 to 3 feet.
.WEDNESDAY NIGHT...Southwest winds 15 to 20 knots. Rain showers
and a chance of thunderstorms until early morning, then showers
after midnight. Waves 2 to 4 feet.

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

$$

LHZ442-021545-
Harbor Beach to Port Sanilac MI-
334 AM EDT Tue Sep 2 2025

.TODAY...Light and variable winds becoming southeast 5 to
10 knots in the afternoon. Mostly sunny. Waves 2 feet or less.
.TONIGHT...Southeast winds 5 to 10 knots becoming south 10 to
15 knots after midnight. Mostly clear. Waves 2 feet or less.
.WEDNESDAY...Southwest winds 10 to 15 knots. Mostly sunny early
in the morning becoming partly cloudy. A chance of showers early
in the afternoon. Waves 1 to 3 feet.
.WEDNESDAY NIGHT...Southwest winds 10 to 15 knots becoming west
15 to 20 knots after midnight. A chance of showers early in the
evening. A chance of thunderstorms until early morning. Rain
showers in the late evening and overnight. Waves 2 to 4 feet.

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

$$

LHZ443-021545-
Port Sanilac to Port Huron MI-
334 AM EDT Tue Sep 2 2025

.TODAY...Light and variable winds becoming east 5 to 10 knots
late in the afternoon. Sunny. Waves 2 feet or less.
.TONIGHT...East winds 5 to 10 knots veering to the south in the
late evening and early morning, then increasing to 10 to 15 knots
after midnight. Mostly clear. Waves 2 feet or less.
.WEDNESDAY...South winds 10 to 15 knots. Mostly sunny until late
afternoon becoming partly cloudy. Waves 1 to 3 feet.
.WEDNESDAY NIGHT...Southwest winds 10 to 15 knots increasing to
15 to 20 knots in the late evening and overnight. Light showers
likely and a chance of thunderstorms until early morning, then
showers after midnight. Waves 2 to 4 feet.

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

$$

LEZ444-021545-
Michigan Waters of Lake Erie from Detroit River to North Cape MI-
334 AM EDT Tue Sep 2 2025

.TODAY...Light and variable winds becoming southeast 5 to
10 knots in the afternoon. Sunny. Waves 2 feet or less.
.TONIGHT...Southeast winds 5 to 10 knots veering to the south
after midnight. Clear. Waves 2 feet or less.
.WEDNESDAY...Southwest winds 5 to 10 knots increasing to 10 to
15 knots early in the afternoon. Mostly sunny. Waves 2 feet or
less.
.WEDNESDAY NIGHT...Southwest winds 10 to 15 knots increasing to
15 to 20 knots in the late evening and overnight. Partly cloudy
early in the evening. A chance of waterspouts. A chance of
showers until early morning. A chance of thunderstorms in the
late evening and early morning, then showers after midnight.
Waves 1 to 3 feet building to 2 to 4 feet in the late evening and
overnight.

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

The water temperature at Belle Isle is 69 degrees.

$$

SC

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a www.weather.gov/greatlakes