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Nearshore Marine Forecast
National Weather Service Milwaukee/Sullivan WI
910 PM CDT Mon Oct 6 2025

For waters within five nautical miles of shore on Lake Michigan

LMZ643-071000-
Sheboygan to Port Washington WI-
910 PM CDT Mon Oct 6 2025

.REST OF TONIGHT...North wind 10 to 15 knots. Rain showers likely
just before midnight, then chance of showers early in the
morning. Waves 1 to 2 feet.
.TUESDAY...Northwest wind 10 to 15 knots veering north in the
late morning and early afternoon, then backing northwest late in
the afternoon. Partly sunny in the morning then clearing. Waves
1 to 2 feet.
.TUESDAY NIGHT...Northwest wind 10 to 15 knots becoming north
15 to 20 knots in the late evening and early morning, then easing
to 10 to 15 knots early in the morning. Clear. Waves 1 to 2 feet
building to 3 to 4 feet in the late evening and overnight.
.WEDNESDAY...North wind 10 to 15 knots becoming northeast 5 to
10 knots in the afternoon. Sunny. Waves 2 to 4 feet subsiding to
1 to 2 feet in the afternoon.

$$
LMZ644-071000-
Port Washington to North Point Light WI-
910 PM CDT Mon Oct 6 2025

.REST OF TONIGHT...North wind 10 to 15 knots rising to 15 to
20 knots early in the morning. Chance of showers just before
midnight. Slight chance of thunderstorms through the night. Rain
showers likely after midnight. Waves 1 to 3 feet building to 2 to
4 feet after midnight.
.TUESDAY...North wind 15 to 20 knots easing to 10 to 15 knots
late in the morning, then becoming north 10 to 15 knots early in
the afternoon backing northwest late in the afternoon. Slight
chance of showers in the morning. Waves 2 to 4 feet subsiding to
1 to 2 feet in the afternoon.
.TUESDAY NIGHT...Northwest wind 10 to 15 knots becoming 10 to
20 knots late in the evening, then veering north 15 to 20 knots
after midnight becoming 10 to 20 knots early in the morning.
Clear. Waves 1 to 2 feet building to 3 to 4 feet after midnight.
.WEDNESDAY...North wind 10 to 15 knots veering northeast late in
the morning, then easing to 5 to 10 knots early in the afternoon
becoming northeast 5 to 10 knots late in the afternoon. Sunny.
Waves 3 to 4 feet subsiding to 1 to 3 feet late in the afternoon.

$$
LMZ645-071000-
North Point Light to Wind Point WI-
910 PM CDT Mon Oct 6 2025

.REST OF TONIGHT...North wind 10 to 15 knots rising to 15 to
20 knots after midnight. Chance of showers just before midnight.
Slight chance of thunderstorms through the night. Rain showers
likely after midnight. Waves 3 to 4 feet.
.TUESDAY...North wind 15 to 20 knots easing to 10 to 15 knots
late in the afternoon. Chance of showers in the morning. Waves
3 to 4 feet.
.TUESDAY NIGHT...Northwest wind 10 to 15 knots becoming 10 to
20 knots late in the evening, then veering north 15 to 20 knots
after midnight. Mostly clear. Waves 2 to 4 feet subsiding to 1 to
2 feet late in the evening, then building to 3 to 4 feet after
midnight building to 3 to 5 feet early in the morning.
.WEDNESDAY...North wind 10 to 15 knots veering northeast late in
the morning, then becoming northeast 10 to 15 knots early in the
afternoon easing to 5 to 10 knots late in the afternoon. Sunny.
Waves 4 to 6 feet subsiding to 3 to 4 feet in the late morning
and afternoon.

$$
LMZ646-071000-
Wind Point WI to Winthrop Harbor IL-
910 PM CDT Mon Oct 6 2025

.REST OF TONIGHT...North wind 10 to 15 knots rising to 15 to
20 knots. Chance of showers just before midnight. Slight chance
of thunderstorms through the night. Showers likely after
midnight. Waves 1 to 3 feet building to 3 to 4 feet after
midnight.
.TUESDAY...North wind 15 to 20 knots easing to 10 to 15 knots
late in the afternoon. Chance of showers in the morning. Waves
3 to 4 feet.
.TUESDAY NIGHT...Northwest wind 10 to 15 knots becoming 10 to
20 knots late in the evening, then veering north 15 to 20 knots
after midnight. Mostly clear. Waves 2 to 4 feet subsiding to 1 to
2 feet late in the evening, then building to 3 to 4 feet after
midnight building to 3 to 5 feet early in the morning.
.WEDNESDAY...Northeast wind 10 to 15 knots easing to 5 to
10 knots late in the afternoon. Sunny. Waves 4 to 6 feet
subsiding to 3 to 4 feet in the late morning and afternoon.

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