Nearshore Marine Forecast
Issued by NWS Milwaukee/Sullivan, WI

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FZUS53 KMKX 201510
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Nearshore Marine Forecast
National Weather Service Milwaukee/Sullivan WI
910 AM CST Thu Nov 20 2025

For waters within five nautical miles of shore on Lake Michigan

LMZ643-202300-
Sheboygan to Port Washington WI-
910 AM CST Thu Nov 20 2025

.REST OF TODAY...Southwest wind 5 to 15 knots becoming 10 to
15 knots early in the afternoon, then becoming southwest 10 to
15 knots late in the afternoon. Slight chance of drizzle through
the day. Slight chance of rain early in the afternoon. Waves 1 to
2 feet.
.TONIGHT...Southwest wind 10 to 15 knots veering northwest early
in the morning. Mostly cloudy. Waves around 1 foot.
.FRIDAY...Northwest wind 10 to 15 knots. Partly sunny. Waves
around 1 foot.
.FRIDAY NIGHT...North wind 5 to 10 knots. Partly cloudy. Waves
around 1 foot.

Wave heights are for ice free areas.

$$
LMZ644-202300-
Port Washington to North Point Light WI-
910 AM CST Thu Nov 20 2025

.REST OF TODAY...Southwest wind 5 to 15 knots becoming 10 to
15 knots early in the afternoon, then becoming southwest 10 to
15 knots late in the afternoon. Slight chance of drizzle through
the day. Waves around 1 foot.
.TONIGHT...Southwest wind 10 to 15 knots becoming west 5 to
10 knots in the late evening and early morning, then becoming
northwest 10 to 15 knots early in the morning. Mostly cloudy.
Waves around 1 foot.
.FRIDAY...Northwest wind 10 to 15 knots easing to 5 to 10 knots
early in the afternoon, then becoming north 10 to 15 knots late
in the afternoon. Partly sunny. Waves around 1 foot.
.FRIDAY NIGHT...North wind 10 to 15 knots easing to 5 to 10 knots
in the late evening and early morning, then becoming north 5 to
10 knots early in the morning. Partly cloudy. Waves around
1 foot.

Wave heights are for ice free areas.

$$
LMZ645-202300-
North Point Light to Wind Point WI-
910 AM CST Thu Nov 20 2025

.REST OF TODAY...Southwest wind 5 to 15 knots becoming 10 to
15 knots early in the afternoon, then becoming southwest 10 to
15 knots late in the afternoon. Slight chance of drizzle through
the day. Waves around 1 foot.
.TONIGHT...Southwest wind 10 to 15 knots veering west late in the
evening, then easing to 5 to 10 knots after midnight becoming
northwest 10 to 15 knots early in the morning. Slight chance of
drizzle through around midnight. Waves around 1 foot.
.FRIDAY...Northwest wind 10 to 15 knots easing to 5 to 10 knots
late in the morning, then becoming northwest 5 to 10 knots early
in the afternoon becoming north 10 to 15 knots late in the
afternoon. Partly sunny. Waves around 1 foot.
.FRIDAY NIGHT...North wind 10 to 15 knots easing to 5 to 10 knots
early in the morning. Mostly cloudy through around midnight then
becoming partly cloudy. Waves 1 to 2 feet.

Wave heights are for ice free areas.

$$
LMZ646-202300-
Wind Point WI to Winthrop Harbor IL-
910 AM CST Thu Nov 20 2025

.REST OF TODAY...Southwest wind 5 to 15 knots becoming 10 to
15 knots early in the afternoon, then becoming southwest 10 to
15 knots late in the afternoon. Patchy fog late in the morning.
slight chance of drizzle in the afternoon. Waves around 1 foot.
.TONIGHT...Southwest wind 5 to 10 knots becoming west 10 to
15 knots late in the evening, then easing to 5 to 10 knots after
midnight veering northwest early in the morning. Slight chance of
drizzle through around midnight. Waves around 1 foot.
.FRIDAY...Northwest wind 10 to 15 knots easing to 5 to 10 knots
late in the morning, then veering north early in the afternoon
rising to 10 to 15 knots late in the afternoon. Mostly cloudy.
Waves around 1 foot.
.FRIDAY NIGHT...North wind 10 to 15 knots easing to 5 to 10 knots
early in the morning. Mostly cloudy through around midnight then
becoming partly cloudy. Waves 1 to 2 feet.

Wave heights are for ice free areas.

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