Coastal Waters Forecast for Sheboygan to Port Washington WI (LMZ643) (Text-Only)
NWS Forecast for: Sheboygan to Port Washington WI (LMZ643)
Issued by: National Weather Service Milwaukee, WI
Last Update: 710 PM CDT Tue Mar 24 2026
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Tonight: South wind 10 to 15 knots easing to 5 to 10 knots in the late evening and early morning, then becoming south 5 to 10 knots early in the morning. Partly cloudy through around midnight then becoming mostly cloudy. Waves 1 to 3 feet.

Wednesday: South wind 10 to 15 knots becoming south 10 to 15 knots with gusts to around 20 knots late in the morning, then rising to 15 to 20 knots early in the afternoon becoming south 15 to 20 knots late in the afternoon. Partly sunny. Waves 1 to 3 feet building to 2 to 4 feet in the late morning and afternoon.

Wednesday Night: South wind 10 to 15 knots with gusts to around 20 knots veering southwest late in the evening, then becoming southwest 10 to 15 knots after midnight easing to 5 to 10 knots early in the morning. Partly cloudy. Waves 2 to 4 feet subsiding to 1 to 2 feet after midnight.

Thursday: Southwest wind 5 to 10 knots becoming northwest 10 to 15 knots late in the morning, then veering north early in the afternoon rising to 15 to 25 knots late in the afternoon. Slight chance of rain in the morning, then chance of rain in the afternoon. Waves 1 to 2 feet building to 3 to 4 feet late in the afternoon. A small craft advisory may be needed.







Zone Forecast: Sheboygan to Port Washington WI (LMZ643)

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