FZUS53 KGRB 230623
NSHGRB

Nearshore Marine Forecast
National Weather Service Green Bay WI
123 AM CDT Sun Aug 23 2026

For waters within five nautical miles of shore on Lake Michigan

LMZ522-231000-
Green Bay south of line from Oconto WI to Little Sturgeon Bay WI-
123 AM CDT Sun Aug 23 2026

.REST OF THE NIGHT...NW wind 10 to 15 kts. Waves 1 to 3 ft.
Clear.
.SUNDAY...N wind 10 to 15 kts. Waves 2 to 4 ft. Mostly sunny in
the morning then becoming partly cloudy. 
.SUNDAY NIGHT...N wind 10 to 15 kts backing NW 5 to 10 kts after
midnight. Waves 1 to 3 ft. Clear.
.MONDAY...NW wind 5 to 10 kts. Waves 2 ft or less. Sunny in the
morning then becoming partly cloudy.  

$$

LMZ521-231000-
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-
123 AM CDT Sun Aug 23 2026

...SMALL CRAFT ADVISORY IN EFFECT UNTIL 10 AM CDT THIS MORNING...

.REST OF THE NIGHT...NW wind 10 to 20 kts. Waves 3 to 5 ft.
Clear.
.SUNDAY...NW wind 15 to 25 kts veering N 10 to 15 kts early in
the afternoon. Waves 3 to 5 ft. Mostly sunny in the morning then
becoming partly cloudy. 
.SUNDAY NIGHT...NW 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. Waves 2 ft or less. Mostly sunny.

$$

LMZ542-543-231000-
Sturgeon Bay to Two Rivers WI-Two Rivers to Sheboygan WI-
123 AM CDT Sun Aug 23 2026

.REST OF THE NIGHT...NW wind 10 to 15 kts. Waves 2 ft or less.
Clear.
.SUNDAY...NW wind 10 to 20 kts. Waves 1 to 3 ft. Sunny in the
morning then becoming partly cloudy. 
.SUNDAY NIGHT...N wind 10 to 15 kts backing NW after midnight.
Waves 2 ft or less. Clear.
.MONDAY...NW wind 10 to 15 kts. Waves 2 ft or less. Mostly sunny.

$$

LMZ541-231000-
Rock Island Passage to Sturgeon Bay WI-
123 AM CDT Sun Aug 23 2026

...SMALL CRAFT ADVISORY IN EFFECT UNTIL 10 AM CDT THIS MORNING...

.REST OF THE NIGHT...NW wind 15 to 25 kts. Waves 2 to 4 ft.
Clear.
.SUNDAY...N wind 15 to 25 kts. Waves 2 to 4 ft subsiding to 1 to
3 ft in the afternoon. A chance of sprinkles in the afternoon. 
.SUNDAY NIGHT...NW wind 10 to 15 kts. Waves 1 to 3 ft. Clear.
.MONDAY...NW wind 10 to 15 kts. Waves 2 ft or less. Mostly sunny.

$$

See Lake Michigan Open Lake Forecast for Tuesday through Thursday.