FZUS53 KGRB 231918
NSHGRB

Nearshore Marine Forecast
National Weather Service Green Bay WI
218 PM CDT Sun Aug 23 2026

For waters within five nautical miles of shore on Lake Michigan

LMZ521-522-232200-
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-
218 PM CDT Sun Aug 23 2026

.THIS AFTERNOON...N wind 15 to 25 kts decreasing to 10 to 15 kts
early in the afternoon. Waves 2 to 4 ft. Partly sunny. 
.TONIGHT...N wind 10 to 15 kts. Waves 2 to 4 ft subsiding to 1 to
3 ft after midnight. Clear.
.MONDAY...NW wind 10 to 15 kts veering N 5 to 10 kts early in the
afternoon. Waves 2 ft or less. Sunny.
.MONDAY NIGHT...E wind 5 to 10 kts veering SE after midnight.
Waves 2 ft or less. Mostly clear.  

$$

LMZ541>543-232200-
Rock Island Passage to Sturgeon Bay WI-
Sturgeon Bay to Two Rivers WI-Two Rivers to Sheboygan WI-
218 PM CDT Sun Aug 23 2026

.THIS AFTERNOON...N wind 15 to 25 kts. Waves 1 to 3 ft. Partly
cloudy. 
.TONIGHT...N wind 10 to 20 kts. Waves 1 to 3 ft. Clear.
.MONDAY...NW wind 10 to 15 kts veering N 5 to 10 kts early in the
afternoon. Waves 2 ft or less. Mostly sunny. 
.MONDAY NIGHT...E wind 5 to 10 kts veering SW after midnight.
Waves 2 ft or less. Partly cloudy.  

$$

See Lake Michigan Open Lake Forecast for Tuesday through Thursday.