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: 910 PM CDT Tue Jun 23 2026
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Rest Of Tonight: South wind 5 to 10 knots. Rain showers likely and slight chance of thunderstorms early in the morning. Waves nearly calm.

Wednesday: South wind 10 to 15 knots becoming south 10 to 15 knots with gusts to around 20 knots early in the afternoon, then becoming south 10 to 15 knots late in the afternoon. Rain showers in the morning. Chance of thunderstorms through the day. Chance of showers in the afternoon. Waves around 1 foot building to 2 to 4 feet in the afternoon.

Wednesday Night: South wind 5 to 15 knots veering southwest 5 to 10 knots late in the evening, then veering west after midnight veering northwest early in the morning. Chance of showers and thunderstorms through around midnight, then slight chance of showers after midnight. Waves 2 to 4 feet subsiding to 1 to 2 feet in the late evening and overnight.

Thursday: Northwest wind 5 to 10 knots veering northeast late in the afternoon. Slight chance of showers and thunderstorms in the afternoon. Waves around 1 foot.







Zone Forecast: Sheboygan to Port Washington WI (LMZ643)

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