Nearshore Marine Forecast
Issued by NWS Green Bay, WI
Issued by NWS Green Bay, WI
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146 FZUS53 KGRB 212337 NSHGRB Nearshore Marine Forecast National Weather Service Green Bay WI 537 PM CST Fri Nov 21 2025 For waters within five nautical miles of the shore on Lake Michigan LMZ521-522-220900- Green Bay south of line from Cedar River to Rock Island Passage and north of a line from Oconto WI to Little Sturgeon Bay WI- Green Bay south of line from Oconto WI to Little Sturgeon Bay WI- 537 PM CST Fri Nov 21 2025 .TONIGHT...NW wind 10 to 15 kts. Clear. Waves 2 ft or less. .SATURDAY...SW wind 5 to 10 kts increasing to 10 to 20 kts with gusts to around 25 kts in the afternoon. A slight chance of light rain in the afternoon. Waves 1 to 3 ft. A Small Craft Advisory may be needed. .SATURDAY NIGHT...W wind 10 to 20 kts with gusts to around 25 kts. Mostly clear. Waves 2 to 4 ft. .SUNDAY...W wind 10 to 15 kts. Gusts to around 25 kts in the morning. Mostly sunny in the morning then becoming partly cloudy. Waves 1 to 3 ft. $$ LMZ541-220900- Rock Island Passage to Sturgeon Bay WI- 537 PM CST Fri Nov 21 2025 .TONIGHT...NW wind 10 to 15 kts. Mostly clear. Waves 2 ft or less. .SATURDAY...SW wind 5 to 10 kts increasing to 10 to 20 kts with gusts to around 25 kts in the afternoon. A slight chance of light rain in the afternoon. Waves 2 ft or less building to 2 to 4 ft late in the afternoon. .SATURDAY NIGHT...W wind 10 to 20 kts veering NW 15 to 25 kts after midnight. Mostly clear. Waves 2 to 4 ft subsiding to 1 to 3 ft after midnight. .SUNDAY...NW wind 10 to 20 kts with gusts to around 25 kts backing W 5 to 10 kts in the afternoon. Mostly sunny in the morning then becoming partly cloudy. Waves 1 to 3 ft. $$ LMZ542-543-220900- Sturgeon Bay to Two Rivers WI-Two Rivers to Sheboygan WI- 537 PM CST Fri Nov 21 2025 .TONIGHT...NW wind 5 to 10 kts. Clear. Waves 2 ft or less. .SATURDAY...SW wind 5 to 10 kts backing S 10 to 20 kts in the afternoon. Partly sunny. Waves 2 ft or less building to 2 to 4 ft late in the afternoon. .SATURDAY NIGHT...W wind 10 to 20 kts veering NW after midnight. Gusts to around 25 kts. Mostly clear. Waves 2 to 4 ft subsiding to 1 to 3 ft in the late evening and overnight. A Small Craft Advisory may be needed. .SUNDAY...NW wind 10 to 20 kts backing W 5 to 10 kts in the afternoon. Mostly sunny. Waves 2 ft or less. $$ See Lake Michigan Open Lake Forecast for Monday through Wednesday.