National Weather Service Marine Forecast FZUS53 KMKX

FZUS53 KMKX 170010
NSHMKX

Nearshore Marine Forecast
National Weather Service Milwaukee/Sullivan WI
710 PM CDT Sat May 16 2026

For waters within five nautical miles of shore on Lake Michigan

LMZ643-170400
Sheboygan to Port Washington WI
710 PM CDT Sat May 16 2026

TONIGHT
Southwest wind 10 to 20 knots becoming west 5 to 10 knots late in the evening, then becoming north 10 to 15 knots after midnight veering northeast early in the morning. Slight chance of showers and thunderstorms early in the morning. Waves 1 to 2 feet building to 2 to 4 feet early in the morning.

SUNDAY
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. Chance of showers and thunderstorms. Waves 2 to 4 feet.

SUNDAY NIGHT
East wind 15 to 20 knots veering south 15 to 25 knots late in the evening, then becoming 15 to 20 knots after midnight becoming 15 to 25 knots early in the morning. Mostly cloudy through around midnight then becoming partly cloudy. Waves 3 to 4 feet building to 5 to 7 feet. A small craft advisory may be needed.

MONDAY
South wind 10 to 20 knots rising to 15 to 25 knots in the late morning and afternoon. Chance of showers in the morning. Slight chance of thunderstorms through the day. Rain showers likely in the afternoon. Waves 5 to 7 feet.

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LMZ644-170400
Port Washington to North Point Light WI
710 PM CDT Sat May 16 2026

TONIGHT
Southwest wind 5 to 15 knots backing south 5 to 10 knots late in the evening, then backing east after midnight becoming northeast 10 to 15 knots early in the morning. Chance of showers and thunderstorms early in the morning. Waves 1 to 2 feet.

SUNDAY
Northeast wind 10 to 15 knots. Chance of showers and thunderstorms in the morning, then slight chance of showers and thunderstorms in the afternoon. Waves 2 to 4 feet.

SUNDAY NIGHT
East wind 15 to 20 knots veering south early in the morning. Mostly cloudy through around midnight then becoming partly cloudy. Waves 3 to 4 feet building to 4 to 6 feet in the late evening and overnight.

MONDAY
South wind 15 to 20 knots becoming 15 to 25 knots late in the morning, then becoming south 15 to 25 knots early in the afternoon becoming 15 to 20 knots late in the afternoon. Chance of showers in the morning. Slight chance of thunderstorms through the day. Rain showers likely in the afternoon. Waves 3 to 5 feet. A small craft advisory may be needed.

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LMZ645-170400
North Point Light to Wind Point WI
710 PM CDT Sat May 16 2026

TONIGHT
South wind 5 to 10 knots backing southeast after midnight, then becoming northeast 10 to 15 knots early in the morning. Slight chance of showers and thunderstorms after midnight. Chance of showers and thunderstorms early in the morning. Waves around 1 foot.

SUNDAY
Northeast wind 10 to 15 knots veering east in the afternoon. Chance of showers and thunderstorms in the morning, then slight chance of showers and thunderstorms in the afternoon. Waves 1 to 2 feet building to 2 to 4 feet in the afternoon.

SUNDAY NIGHT
Southeast wind 15 to 20 knots veering south early in the morning. Partly cloudy. Waves 3 to 4 feet building to 3 to 5 feet in the late evening and early morning, then subsiding to 3 to 4 feet early in the morning.

MONDAY
South wind 15 to 20 knots becoming 15 to 25 knots late in the morning, then becoming south 15 to 25 knots early in the afternoon becoming 15 to 20 knots late in the afternoon. Chance of showers in the morning. Slight chance of thunderstorms through the day. Showers likely in the afternoon. Waves 3 to 4 feet. A small craft advisory may be needed.

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LMZ646-170400
Wind Point WI to Winthrop Harbor IL
710 PM CDT Sat May 16 2026

TONIGHT
South wind 5 to 10 knots backing southeast in the late evening and early morning, then backing northeast early in the morning. Slight chance of showers and thunderstorms in the late evening and early morning. Chance of showers and thunderstorms early in the morning. Waves around 1 foot.

SUNDAY
Northeast wind 10 to 15 knots veering southeast late in the afternoon. Chance of showers and thunderstorms in the morning, then slight chance of showers and thunderstorms in the afternoon. Waves 1 to 2 feet building to 2 to 4 feet late in the afternoon.

SUNDAY NIGHT
Southeast wind 15 to 20 knots veering south early in the morning. Partly cloudy. Waves 3 to 4 feet.

MONDAY
South wind 15 to 20 knots. Gusts up to 25 knots. Chance of showers in the morning. Slight chance of thunderstorms through the day. Showers likely in the afternoon. Waves 3 to 4 feet.

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See Lake Michigan Open Waters Forecast for Tuesday through Thursday.