FZUS53 KMKX 120405
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Nearshore Marine Forecast
National Weather Service Milwaukee/Sullivan WI
1105 PM CDT Thu Sep 11 2025

For waters within five nautical miles of shore on Lake Michigan

LMZ643-121000
Sheboygan to Port Washington WI
1105 PM CDT Thu Sep 11 2025

REST OF TONIGHT
Northeast wind 5 to 10 knots. Areas of dense fog. Waves around 1 foot.

FRIDAY
Northeast wind 5 to 10 knots veering east late in the morning, then veering southeast early in the afternoon rising to 10 to 15 knots late in the afternoon. Areas of dense fog in the morning. Waves around 1 foot.

FRIDAY NIGHT
South wind 10 to 15 knots easing to 5 to 10 knots late in the evening, then becoming south 5 to 10 knots after midnight. Chance of showers and slight chance of thunderstorms after midnight. Waves around 1 foot.

SATURDAY
South wind 5 to 10 knots rising to 10 to 15 knots in the late morning and early afternoon, then becoming south 10 to 15 knots late in the afternoon. Chance of showers in the morning. Slight chance of thunderstorms through the day. Waves 1 to 2 feet.

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LMZ644-121000
Port Washington to North Point Light WI
1105 PM CDT Thu Sep 11 2025

REST OF TONIGHT
Northeast wind 5 to 10 knots. Patchy fog after midnight, then areas of dense fog early in the morning. Waves around 1 foot.

FRIDAY
East wind 5 to 10 knots veering southeast early in the afternoon, then rising to 10 to 15 knots late in the afternoon. Patchy dense fog in the morning. Waves around 1 foot.

FRIDAY NIGHT
Southeast wind 10 to 15 knots easing to 5 to 10 knots late in the evening, then veering south after midnight becoming south 5 to 10 knots early in the morning. Chance of showers and slight chance of thunderstorms after midnight. Waves around 1 foot.

SATURDAY
South wind 5 to 10 knots rising to 10 to 15 knots late in the morning, then becoming south 10 to 15 knots in the afternoon. Chance of showers in the morning. Slight chance of thunderstorms through the day. Waves 1 to 2 feet.

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LMZ645-121000
North Point Light to Wind Point WI
1105 PM CDT Thu Sep 11 2025

REST OF TONIGHT
Northeast wind 5 to 10 knots. Patchy fog through the night. Waves 1 to 2 feet.

FRIDAY
East wind 5 to 10 knots becoming southeast 10 to 15 knots in the afternoon. Patchy fog in the morning. Waves around 1 foot.

FRIDAY NIGHT
Southeast wind 10 to 15 knots easing to 5 to 10 knots late in the evening, then veering south after midnight becoming south 5 to 10 knots early in the morning. Chance of showers and slight chance of thunderstorms after midnight. Waves around 1 foot.

SATURDAY
South wind 5 to 10 knots rising to 10 to 15 knots late in the morning, then becoming south 10 to 15 knots in the afternoon. Chance of showers in the morning. Slight chance of thunderstorms through the day. Waves 1 to 2 feet.

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LMZ646-121000
Wind Point WI to Winthrop Harbor IL
1105 PM CDT Thu Sep 11 2025

REST OF TONIGHT
Northeast wind 5 to 10 knots. Patchy fog through the night. Waves 1 to 2 feet.

FRIDAY
East wind 5 to 10 knots veering southeast in the afternoon. Patchy fog in the morning. Waves 1 to 2 feet.

FRIDAY NIGHT
Southeast wind 5 to 10 knots veering south early in the morning. Slight chance of showers and thunderstorms after midnight. Waves around 1 foot.

SATURDAY
South wind 5 to 10 knots rising to 10 to 15 knots late in the morning, then becoming south 10 to 15 knots in the afternoon. Slight chance of showers and thunderstorms through the day. Waves 1 to 2 feet.

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See Lake Michigan Open Waters Forecast for Sunday through Tuesday.