052
FZUS53 KDTX 210800
NSHDTX

Nearshore Marine Forecast for Michigan
National Weather Service Detroit/Pontiac MI
400 AM EDT Thu Aug 21 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.

LHZ422-211600-
Inner Saginaw Bay SW of Point Au Gres to Bay Port MI-
400 AM EDT Thu Aug 21 2025

.TODAY...Northeast winds 10 to 15 knots. Partly cloudy in the
morning then clearing. Waves 2 feet or less.
.TONIGHT...Northeast winds 10 to 15 knots becoming light and
variable. Mostly clear. Waves 2 feet or less.
.FRIDAY...Light and variable winds becoming southwest 5 to
10 knots in the late morning and afternoon. Mostly sunny. Waves
2 feet or less.
.FRIDAY NIGHT...Southwest winds 10 to 15 knots. Partly cloudy.
Waves 2 feet or less.

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

$$

LHZ421-211600-
Outer Saginaw Bay SW of Alabaster to Port Austin MI to Inner
Saginaw Bay-
400 AM EDT Thu Aug 21 2025

.TODAY...Northeast winds 10 to 15 knots. Partly cloudy in the
morning becoming mostly sunny. Waves 2 feet or less.
.TONIGHT...Northeast winds 10 to 15 knots becoming light and
variable. Mostly clear. Waves 2 feet or less.
.FRIDAY...Light and variable winds becoming southwest 5 to
10 knots in the late morning and afternoon. Mostly sunny. Waves
2 feet or less.
.FRIDAY NIGHT...Southwest winds 10 to 15 knots. Partly cloudy.
Waves 2 feet or less.

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

$$

LHZ441-211600-
Port Austin to Harbor Beach MI-
400 AM EDT Thu Aug 21 2025

.TODAY...Northeast winds 5 to 10 knots increasing to 10 to
15 knots late in the afternoon. Partly cloudy. Waves 2 feet or
less.
.TONIGHT...Northeast winds 10 to 15 knots diminishing to 5 to
10 knots in the late evening and early morning, then becoming
light and variable after midnight. Mostly clear. Waves 2 feet or
less.
.FRIDAY...Light and variable winds becoming southwest 5 to
10 knots in the late morning and afternoon. Mostly sunny. Waves
2 feet or less.
.FRIDAY NIGHT...South winds 5 to 10 knots becoming southwest
10 to 15 knots in the late evening and overnight. Partly cloudy.
Waves 2 feet or less.

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

$$

LHZ442-211600-
Harbor Beach to Port Sanilac MI-
400 AM EDT Thu Aug 21 2025

.TODAY...Northeast winds 10 to 15 knots. Partly cloudy. Waves
1 to 3 feet.
.TONIGHT...Northeast winds 10 to 15 knots becoming east 5 to
10 knots after midnight. Mostly clear. Waves 1 to 3 feet.
.FRIDAY...Light and variable winds becoming southeast 5 to
10 knots early in the afternoon. Mostly sunny. Waves 2 feet or
less.
.FRIDAY NIGHT...South winds 5 to 10 knots becoming southwest
10 to 15 knots after midnight. Partly cloudy. Waves 2 feet or
less.

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

$$

LHZ443-211600-
Port Sanilac to Port Huron MI-
400 AM EDT Thu Aug 21 2025

.TODAY...Northeast winds 10 to 15 knots. Partly cloudy. Waves
1 to 3 feet.
.TONIGHT...Northeast winds 10 to 15 knots becoming southeast 5 to
10 knots after midnight. Mostly clear. Waves 1 to 3 feet.
.FRIDAY...Light and variable winds. Mostly sunny. Waves 2 feet or
less.
.FRIDAY NIGHT...South winds 5 to 10 knots veering to the
southwest after midnight. Partly cloudy. Waves 2 feet or less.

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

$$

LEZ444-211600-
Michigan Waters of Lake Erie from Detroit River to North Cape MI-
400 AM EDT Thu Aug 21 2025

.TODAY...Northeast winds 10 to 15 knots. Partly cloudy. Waves
1 to 3 feet.
.TONIGHT...Northeast winds 10 to 15 knots diminishing to 5 to
10 knots after midnight. Mostly clear. Waves 2 feet or less.
.FRIDAY...Northeast winds 5 to 10 knots veering to the southeast
early in the afternoon. Sunny. Waves 2 feet or less.
.FRIDAY NIGHT...Southeast winds 5 to 10 knots veering to the
southwest after midnight. Mostly clear. Waves 2 feet or less.

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

The water temperature at Belle Isle is 75 degrees.

$$

MV

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