FZUS53 KMKX 190005

NSHMKX



Nearshore Marine Forecast

National Weather Service Milwaukee/Sullivan WI

705 PM CDT Mon Aug 18 2025



For waters within five nautical miles of shore on Lake Michigan



LMZ643-190400-

Sheboygan to Port Washington WI-

705 PM CDT Mon Aug 18 2025



.TONIGHT...Southeast wind 10 to 15 knots with gusts to around

20 knots becoming southeast 10 to 15 knots late in the evening,

then veering south after midnight becoming southwest 5 to

10 knots early in the morning. Chance of showers and

thunderstorms. Waves 3 to 4 feet. 

.TUESDAY...Northwest wind 10 to 15 knots veering north late in

the afternoon. Cloudy in the morning then becoming partly sunny.

Waves 2 to 4 feet subsiding to 1 to 3 feet in the afternoon. 

.TUESDAY NIGHT...North wind 10 to 15 knots. Partly cloudy. Waves

1 to 3 feet building to 2 to 4 feet in the late evening and

overnight. 

.WEDNESDAY...North wind 10 to 15 knots rising to 15 to 20 knots

late in the morning, then becoming north 15 to 20 knots in the

afternoon. Partly sunny. Waves 3 to 4 feet. 



$$

LMZ644-190400-

Port Washington to North Point Light WI-

705 PM CDT Mon Aug 18 2025



.TONIGHT...Southeast wind 10 to 15 knots veering south after

midnight, then becoming southwest 5 to 10 knots early in the

morning. Showers and thunderstorms likely through around

midnight, then chance of showers and thunderstorms after

midnight. Waves 3 to 4 feet subsiding to 1 to 3 feet early in the

morning. 

.TUESDAY...Northwest wind 10 to 15 knots veering north late in

the afternoon. Cloudy in the morning then becoming partly sunny.

Waves 1 to 2 feet. 

.TUESDAY NIGHT...North wind 10 to 15 knots. Partly cloudy. Waves

1 to 2 feet building to 2 to 4 feet in the late evening and

overnight. 

.WEDNESDAY...North wind 15 to 20 knots. Partly sunny. Waves 3 to

4 feet. 



$$

LMZ645-190400-

North Point Light to Wind Point WI-

705 PM CDT Mon Aug 18 2025



.TONIGHT...Southeast wind 10 to 15 knots veering southwest early

in the morning. Showers and thunderstorms in the evening, then

showers and thunderstorms likely late in the evening. Chance of

showers and thunderstorms after midnight. Waves 2 to 4 feet

subsiding to 1 to 2 feet after midnight. 

.TUESDAY...West wind 10 to 15 knots veering north late in the

afternoon. Slight chance of showers and thunderstorms in the

morning. Waves 1 to 2 feet. 

.TUESDAY NIGHT...North wind 10 to 15 knots rising to 15 to

20 knots early in the morning. Partly cloudy. Waves 1 to 3 feet

building to 3 to 4 feet in the late evening and overnight. 

.WEDNESDAY...North wind 15 to 20 knots becoming 10 to 20 knots

late in the afternoon. Partly sunny. Waves 3 to 4 feet building

to 4 to 6 feet in the late morning and afternoon. 



$$

LMZ646-190400-

Wind Point WI to Winthrop Harbor IL-

705 PM CDT Mon Aug 18 2025



.TONIGHT...Southeast wind 10 to 15 knots with gusts to around

20 knots veering southwest early in the morning. Showers and

thunderstorms likely through around midnight, then chance of

showers and thunderstorms after midnight. patchy fog after

midnight. Waves 2 to 4 feet subsiding to 1 to 2 feet in the late

evening and overnight. 

.TUESDAY...West wind 10 to 15 knots veering north late in the

afternoon. Slight chance of showers and thunderstorms. Waves 1 to

2 feet. 

.TUESDAY NIGHT...North wind 10 to 15 knots rising to 15 to

20 knots early in the morning. Partly cloudy. Waves 1 to 2 feet

building to 3 to 4 feet in the late evening and overnight. 

.WEDNESDAY...North wind 15 to 20 knots. Gusts up to 25 knots.

Partly sunny. Waves 3 to 4 feet building to 4 to 6 feet in the

late morning and afternoon. 



$$

See Lake Michigan Open Waters Forecast for Thursday through Saturday.