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: 110 AM CST Sat Dec 27 2025
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Rest Of Tonight: West wind 5 knots becoming south early in the morning. Cloudy. Waves around 1 foot.

Saturday: South wind 10 to 15 knots with gusts to around 20 knots becoming southeast 15 to 20 knots in the afternoon. Cloudy. Waves around 1 foot building to 3 to 5 feet.

Saturday Night: Southeast wind 10 to 20 knots veering south 15 to 20 knots after midnight, then becoming 10 to 20 knots early in the morning. Gusts up to 25 knots. Patchy fog through the night. Chance of rain through around midnight. Rain likely after midnight. Waves 4 to 6 feet building to 5 to 7 feet in the late evening and overnight.

Sunday: Southeast wind 10 to 15 knots backing east early in the afternoon, then becoming northeast 15 to 20 knots late in the afternoon. Chance of rain in the morning, then rain in the afternoon. Waves 4 to 6 feet subsiding to 3 to 4 feet in the late morning and afternoon.

wave heights are for ice free areas.







Zone Forecast: Sheboygan to Port Washington WI (LMZ643)

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