FZUS53 KMKX 200610
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Nearshore Marine Forecast
National Weather Service Milwaukee/Sullivan WI
110 AM CDT Wed May 20 2026

For waters within five nautical miles of shore on Lake Michigan

LMZ643-200900-
Sheboygan to Port Washington WI-
110 AM CDT Wed May 20 2026

.REST OF TONIGHT...Northwest wind 10 to 15 knots. Partly cloudy.
Waves 1 to 2 feet. 
.WEDNESDAY...North wind 10 to 15 knots veering northeast late in
the afternoon. Mostly sunny. Waves 1 to 2 feet building to 2 to
4 feet late in the afternoon. 
.WEDNESDAY NIGHT...Northeast wind 10 to 15 knots. Partly cloudy.
Waves 2 to 4 feet. 
.THURSDAY...Northeast wind 10 to 15 knots. Partly sunny. Waves
2 to 4 feet subsiding to 1 to 2 feet in the afternoon. 

$$
LMZ644-200900-
Port Washington to North Point Light WI-
110 AM CDT Wed May 20 2026

.REST OF TONIGHT...Northwest wind 10 to 15 knots. Partly cloudy.
Waves 1 to 2 feet. 
.WEDNESDAY...North wind 10 to 15 knots veering northeast late in
the morning, then rising to 15 to 20 knots in the afternoon.
Mostly sunny. Waves 1 to 2 feet building to 2 to 4 feet in the
afternoon. 
.WEDNESDAY NIGHT...Northeast wind 10 to 15 knots rising to 15 to
20 knots late in the evening, then becoming northeast 15 to
20 knots after midnight. Partly cloudy. Waves 3 to 4 feet. 
.THURSDAY...Northeast wind 15 to 20 knots easing to 10 to
15 knots late in the morning, then becoming northeast 10 to
15 knots in the afternoon. Partly sunny. Waves 3 to 4 feet
subsiding to 1 to 3 feet late in the afternoon. 

$$
LMZ645-200900-
North Point Light to Wind Point WI-
110 AM CDT Wed May 20 2026

...SMALL CRAFT ADVISORY IN EFFECT FROM THIS EVENING THROUGH
THURSDAY MORNING...

.REST OF TONIGHT...Northwest wind 10 to 15 knots with gusts to
around 20 knots veering north early in the morning. Partly
cloudy. Waves 1 to 2 feet. 
.WEDNESDAY...North wind 10 to 15 knots becoming northeast 15 to
20 knots in the late morning and afternoon. Mostly sunny. Waves
1 to 2 feet building to 2 to 4 feet in the late morning and
afternoon. 
.WEDNESDAY NIGHT...Northeast wind 15 to 20 knots becoming 10 to
20 knots after midnight, then becoming 15 to 20 knots early in
the morning. Partly cloudy. Waves 3 to 4 feet. 
.THURSDAY...Northeast wind 15 to 20 knots easing to 10 to
15 knots late in the morning, then becoming northeast 10 to
15 knots in the afternoon. Partly sunny. Waves 3 to 4 feet. 

$$
LMZ646-200900-
Wind Point WI to Winthrop Harbor IL-
110 AM CDT Wed May 20 2026

...SMALL CRAFT ADVISORY IN EFFECT FROM THIS EVENING THROUGH
THURSDAY MORNING...

.REST OF TONIGHT...Northwest wind 10 to 15 knots veering north
early in the morning. Partly cloudy. Waves 1 to 2 feet. 
.WEDNESDAY...North wind 10 to 15 knots rising to 15 to 20 knots
late in the morning, then veering northeast in the afternoon.
Partly sunny. Waves 1 to 2 feet building to 3 to 4 feet in the
late morning and afternoon. 
.WEDNESDAY NIGHT...North wind 15 to 20 knots veering northeast
early in the morning. Partly cloudy. Waves 3 to 4 feet. 
.THURSDAY...Northeast wind 15 to 20 knots becoming east 10 to
15 knots late in the morning, then backing northeast early in the
afternoon becoming northeast 10 to 15 knots with gusts to around
20 knots late in the afternoon. Partly sunny. Waves 3 to 4 feet. 

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