FZUS53 KMKX 220210
NSHMKX

Nearshore Marine Forecast
National Weather Service Milwaukee/Sullivan WI
910 PM CDT Fri Aug 21 2026

For waters within five nautical miles of shore on Lake Michigan

LMZ643-221000-
Sheboygan to Port Washington WI-
910 PM CDT Fri Aug 21 2026

.REST OF TONIGHT...Southwest wind 5 to 10 knots veering northwest
5 to 15 knots after midnight, then becoming 10 to 15 knots early
in the morning. Slight chance of showers just before midnight.
Waves 1 to 2 feet. 
.SATURDAY...Northwest wind 10 to 15 knots veering north late in
the afternoon. Slight chance of showers and thunderstorms in the
afternoon. Waves 1 to 2 feet. 
.SATURDAY NIGHT...North wind 10 to 15 knots backing northwest
early in the morning. Slight chance of showers and thunderstorms
through around midnight. Waves 1 to 2 feet. 
.SUNDAY...Northwest wind 10 to 15 knots veering north late in the
afternoon. Sunny. Waves 1 to 2 feet. 

$$
LMZ644-221000-
Port Washington to North Point Light WI-
910 PM CDT Fri Aug 21 2026

.REST OF TONIGHT...Southwest wind 5 to 10 knots becoming west
10 to 15 knots after midnight, then veering northwest early in
the morning. Chance of showers just before midnight. Waves 1 to
2 feet. 
.SATURDAY...Northwest wind 10 to 15 knots. Slight chance of
showers and thunderstorms in the afternoon. Waves 1 to 2 feet. 
.SATURDAY NIGHT...North wind 10 to 15 knots backing northwest
early in the morning. Chance of showers and slight chance of
thunderstorms through around midnight. Waves 1 to 2 feet. 
.SUNDAY...Northwest wind 10 to 15 knots veering north late in the
afternoon. Sunny. Waves 1 to 2 feet. 

$$
LMZ645-221000-
North Point Light to Wind Point WI-
910 PM CDT Fri Aug 21 2026

.REST OF TONIGHT...Southwest wind 5 to 10 knots becoming west
10 to 15 knots after midnight, then veering northwest early in
the morning. Chance of showers and slight chance of thunderstorms
just before midnight. Waves 1 to 2 feet. 
.SATURDAY...Northwest wind 15 to 20 knots easing to 10 to
15 knots late in the morning, then veering north early in the
afternoon becoming north 10 to 15 knots late in the afternoon.
Slight chance of showers and thunderstorms in the afternoon.
Waves 2 to 4 feet subsiding to 1 to 2 feet in the afternoon. 
.SATURDAY NIGHT...North wind 10 to 15 knots backing northwest
early in the morning. Chance of showers and slight chance of
thunderstorms through around midnight. Waves 1 to 2 feet building
to 2 to 4 feet after midnight. 
.SUNDAY...Northwest wind 10 to 15 knots veering north late in the
afternoon. Sunny. Waves 2 to 4 feet. 

$$
LMZ646-221000-
Wind Point WI to Winthrop Harbor IL-
910 PM CDT Fri Aug 21 2026

.REST OF TONIGHT...Southwest wind 5 to 10 knots becoming west
10 to 15 knots after midnight, then veering northwest early in
the morning. Partly cloudy. Waves 1 to 2 feet. 
.SATURDAY...Northwest wind 10 to 20 knots becoming 10 to 15 knots
late in the morning, then veering north early in the afternoon
becoming north 10 to 15 knots late in the afternoon. Slight
chance of showers and thunderstorms in the afternoon. Waves 1 to
2 feet. 
.SATURDAY NIGHT...Northwest wind 10 to 15 knots veering north in
the late evening and early morning, then backing northwest early
in the morning. Slight chance of showers and thunderstorms
through around midnight. Waves 1 to 2 feet building to 2 to
4 feet after midnight. 
.SUNDAY...Northwest wind 10 to 15 knots veering north late in the
afternoon. Sunny. Waves 2 to 4 feet. 

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