Nearshore Marine Forecast
Issued by NWS Milwaukee/Sullivan, WI

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Nearshore Marine Forecast
National Weather Service Milwaukee/Sullivan WI
705 AM CDT Thu Aug 28 2025

For waters within five nautical miles of shore on Lake Michigan

LMZ643-281600-
Sheboygan to Port Washington WI-
705 AM CDT Thu Aug 28 2025

...SMALL CRAFT ADVISORY IN EFFECT FROM NOON CDT TODAY THROUGH
FRIDAY MORNING...

.TODAY...Northwest wind 10 to 15 knots becoming north 15 to
20 knots late in the morning, then becoming north 15 to 20 knots
with gusts to around 25 knots early in the afternoon becoming
10 to 20 knots with gusts to around 25 knots late in the
afternoon. Chance of showers and slight chance of thunderstorms
in the morning. Waves 1 to 2 feet building to 4 to 6 feet.
.TONIGHT...North wind 15 to 20 knots with gusts to around
25 knots veering northeast with gusts to around 25 knots late in
the evening, then becoming 10 to 20 knots after midnight becoming
10 to 15 knots early in the morning. Mostly clear. Waves 4 to
6 feet subsiding to 3 to 4 feet early in the morning.
.FRIDAY...Northeast wind 5 to 10 knots veering east late in the
afternoon. Partly sunny. Waves 2 to 4 feet subsiding to 1 to
2 feet in the afternoon.
.FRIDAY NIGHT...East wind 5 to 10 knots backing northeast late in
the evening, then easing to 5 knots after midnight backing north
early in the morning. Mostly clear. Waves around 1 foot.

$$
LMZ644-281600-
Port Washington to North Point Light WI-
705 AM CDT Thu Aug 28 2025

...SMALL CRAFT ADVISORY IN EFFECT FROM NOON CDT TODAY THROUGH
FRIDAY MORNING...

.TODAY...West wind 5 to 15 knots veering northwest 10 to 15 knots
late in the morning, then becoming north 15 to 20 knots with
gusts to around 25 knots in the afternoon. Slight chance of
showers and thunderstorms in the morning. Waves around 1 foot
building to 3 to 5 feet in the afternoon.
.TONIGHT...Northeast wind 15 to 20 knots becoming northeast 15 to
20 knots with gusts to around 25 knots late in the evening, then
easing to 10 to 15 knots with gusts to around 20 knots after
midnight. Mostly clear. Waves 4 to 6 feet subsiding to 3 to
5 feet early in the morning.
.FRIDAY...Northeast wind 5 to 10 knots veering east late in the
afternoon. Partly sunny. Waves 3 to 4 feet subsiding to 1 to
2 feet in the afternoon.
.FRIDAY NIGHT...East wind 5 to 10 knots backing northeast late in
the evening, then becoming northeast 5 to 10 knots after midnight
becoming north early in the morning. Partly cloudy. Waves around
1 foot.

$$
LMZ645-281600-
North Point Light to Wind Point WI-
705 AM CDT Thu Aug 28 2025

...SMALL CRAFT ADVISORY IN EFFECT FROM NOON CDT TODAY THROUGH
FRIDAY MORNING...

.TODAY...West wind 10 to 15 knots veering northwest late in the
morning, then becoming north 15 to 20 knots with gusts to around
25 knots in the afternoon. Chance of showers in the morning.
Slight chance of thunderstorms until late afternoon. Slight
chance of showers in the late morning and early afternoon. Waves
around 1 foot building to 3 to 5 feet in the afternoon.
.TONIGHT...North wind 15 to 20 knots with gusts to around
25 knots veering northeast with gusts to around 25 knots late in
the evening, then becoming northeast 15 to 20 knots after
midnight easing to 10 to 15 knots early in the morning. Partly
cloudy. Waves 5 to 7 feet subsiding to 4 to 6 feet early in the
morning.
.FRIDAY...Northeast wind 10 to 15 knots easing to 5 to 10 knots
in the afternoon. Partly sunny. Waves 3 to 4 feet subsiding to
1 to 3 feet late in the afternoon.
.FRIDAY NIGHT...Northeast wind 5 to 10 knots. Partly cloudy.
Waves around 1 foot.

$$
LMZ646-281600-
Wind Point WI to Winthrop Harbor IL-
705 AM CDT Thu Aug 28 2025

...SMALL CRAFT ADVISORY IN EFFECT FROM NOON CDT TODAY THROUGH
FRIDAY MORNING...

.TODAY...West wind 10 to 15 knots veering northwest late in the
morning, then veering north 10 to 20 knots early in the afternoon
becoming 15 to 20 knots with gusts to around 25 knots late in the
afternoon. Chance of showers in the morning. Slight chance of
thunderstorms until late afternoon. Slight chance of showers in
the late morning and early afternoon. Waves around 1 foot
building to 3 to 5 feet in the afternoon.
.TONIGHT...Northeast wind 15 to 20 knots with gusts to around
25 knots becoming northeast 15 to 20 knots after midnight, then
easing to 10 to 15 knots early in the morning. Mostly clear.
Waves 4 to 6 feet.
.FRIDAY...Northeast wind 10 to 15 knots easing to 5 to 10 knots
early in the afternoon, then becoming northeast 5 to 10 knots
late in the afternoon. Partly sunny. Waves 3 to 4 feet subsiding
to 1 to 3 feet late in the afternoon.
.FRIDAY NIGHT...Northeast wind 5 to 10 knots. Partly cloudy.
Waves 1 to 2 feet.

$$
See Lake Michigan Open Waters Forecast for Saturday through Monday.