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Nearshore Marine Forecast
National Weather Service Milwaukee/Sullivan WI
415 AM CDT Mon Oct 13 2025

For waters within five nautical miles of shore on Lake Michigan

LMZ643-132100-
Sheboygan to Port Washington WI-
415 AM CDT Mon Oct 13 2025

.EARLY THIS MORNING...South wind 10 to 15 knots. Mostly cloudy
with isolated showers. Waves 2 to 4 feet.
.TODAY...South wind 10 to 15 knots with gusts to around 20 knots
becoming south 10 to 15 knots in the late morning and early
afternoon, then becoming southwest 5 to 10 knots late in the
afternoon. Scattered showers in the morning, then slight chance
of showers early in the afternoon. Waves 2 to 4 feet subsiding to
1 to 3 feet late in the afternoon.
.TONIGHT...West wind 5 to 10 knots veering northwest 5 to
15 knots late in the evening, then veering north 10 to 15 knots
after midnight rising to 15 to 20 knots early in the morning.
Partly cloudy. Waves 1 to 2 feet building to 2 to 4 feet early in
the morning.
.TUESDAY...North wind 15 to 20 knots veering northeast late in
the afternoon. Partly sunny. Waves 3 to 4 feet.
.TUESDAY NIGHT...Northeast wind 15 to 20 knots. Chance of showers
through the night. Waves 3 to 4 feet.

Wave heights are for ice free areas.

$$
LMZ644-132100-
Port Washington to North Point Light WI-
415 AM CDT Mon Oct 13 2025

.EARLY THIS MORNING...South wind 10 to 15 knots. Mostly cloudy
with isolated showers. Waves 2 to 4 feet.
.TODAY...South wind 10 to 15 knots with gusts to around 20 knots
becoming south 10 to 15 knots late in the morning, then easing to
5 to 10 knots early in the afternoon veering southwest late in
the afternoon. Scattered showers in the morning, then slight
chance of showers early in the afternoon. Waves 2 to 4 feet
subsiding to 1 to 2 feet in the afternoon.
.TONIGHT...West wind 5 to 10 knots veering northwest late in the
evening, then becoming north 10 to 15 knots after midnight
becoming 10 to 20 knots early in the morning. Partly cloudy.
Waves around 1 foot building to 2 to 4 feet early in the morning.
.TUESDAY...North wind 15 to 20 knots veering northeast late in
the afternoon. Partly sunny. Waves 3 to 4 feet building to 4 to
6 feet in the late morning and afternoon.
.TUESDAY NIGHT...Northeast wind 15 to 20 knots. Chance of showers
through the night. Waves 4 to 6 feet.

Wave heights are for ice free areas.

$$
LMZ645-132100-
North Point Light to Wind Point WI-
415 AM CDT Mon Oct 13 2025

.EARLY THIS MORNING...South wind 10 to 15 knots. Mostly cloudy.
Waves 2 to 4 feet.
.TODAY...South wind 10 to 15 knots easing to 5 to 10 knots in the
afternoon. Scattered showers in the morning, then slight chance
of showers in the late morning and early afternoon. Waves 2 to
4 feet subsiding to 1 to 2 feet in the late morning and
afternoon.
.TONIGHT...Northwest wind 5 to 10 knots becoming north 10 to
15 knots after midnight. Mostly cloudy through around midnight
then becoming partly cloudy. Waves around 1 foot building to 2 to
4 feet early in the morning.
.TUESDAY...North wind 15 to 20 knots becoming 10 to 20 knots late
in the afternoon. Partly sunny. Waves 3 to 5 feet building to
4 to 6 feet in the late morning and afternoon.
.TUESDAY NIGHT...North wind 10 to 20 knots veering northeast late
in the evening, then becoming 15 to 20 knots after midnight.
Chance of showers through the night. Waves 5 to 7 feet subsiding
to 4 to 6 feet early in the morning.

Wave heights are for ice free areas.

$$
LMZ646-132100-
Wind Point WI to Winthrop Harbor IL-
415 AM CDT Mon Oct 13 2025

.EARLY THIS MORNING...South wind 10 to 15 knots. Mostly cloudy.
Waves 2 to 4 feet.
.TODAY...South wind 10 to 15 knots easing to 5 to 10 knots early
in the afternoon, then becoming south 5 to 10 knots late in the
afternoon. Scattered showers in the morning, then slight chance
of showers late in the morning. Waves 2 to 4 feet subsiding to
1 to 2 feet in the late morning and afternoon.
.TONIGHT...North wind 5 to 10 knots backing northwest late in the
evening, then becoming north 10 to 15 knots after midnight.
Mostly cloudy through around midnight then becoming partly
cloudy. Waves around 1 foot.
.TUESDAY...North wind 15 to 20 knots. Partly sunny. Waves 3 to
4 feet building to 4 to 6 feet in the late morning and afternoon.
.TUESDAY NIGHT...North wind 15 to 20 knots veering northeast
after midnight. Slight chance of showers through around midnight,
then chance of showers after midnight. Waves 4 to 6 feet building
to 5 to 7 feet in the late evening and early morning, then
subsiding to 4 to 6 feet early in the morning.

Wave heights are for ice free areas.

$$
See Lake Michigan Open Waters Forecast for Wednesday through Friday.