837  
FZUS53 KMKX 292010  
NSHMKX  
 
NEARSHORE MARINE FORECAST  
NATIONAL WEATHER SERVICE MILWAUKEE/SULLIVAN WI  
310 PM CDT SAT AUG 29 2026  
 
FOR WATERS WITHIN FIVE NAUTICAL MILES OF SHORE ON LAKE MICHIGAN  
 
LMZ643-300900-  
SHEBOYGAN TO PORT WASHINGTON WI-  
310 PM CDT SAT AUG 29 2026  
   
THROUGH EARLY EVENING  
SOUTH WIND 10 TO 15 KNOTS. CLOUDY WITH A  
50 PERCENT CHANCE OF SHOWERS. WAVES AROUND 1 FOOT.    
TONIGHT  
SOUTHEAST WIND 10 TO 20 KNOTS VEERING SOUTH 15 TO  
20 KNOTS IN THE LATE EVENING AND EARLY MORNING, THEN BECOMING  
10 TO 20 KNOTS EARLY IN THE MORNING. SLIGHT CHANCE OF SHOWERS  
THROUGH AROUND MIDNIGHT. CHANCE OF SHOWERS AND SLIGHT CHANCE OF  
THUNDERSTORMS AFTER MIDNIGHT. WAVES 3 TO 4 FEET.    
SUNDAY  
SOUTH WIND 10 TO 15 KNOTS WITH GUSTS TO AROUND 20 KNOTS  
BECOMING SOUTH 10 TO 15 KNOTS LATE IN THE AFTERNOON. CHANCE OF  
SHOWERS IN THE MORNING. SLIGHT CHANCE OF THUNDERSTORMS THROUGH  
THE DAY. SLIGHT CHANCE OF SHOWERS IN THE AFTERNOON. WAVES 3 TO  
4 FEET.    
SUNDAY NIGHT  
SOUTH WIND 5 TO 10 KNOTS BACKING SOUTHEAST LATE  
IN THE EVENING, THEN BECOMING SOUTHEAST 5 TO 10 KNOTS AFTER  
MIDNIGHT BECOMING SOUTH 10 TO 15 KNOTS EARLY IN THE MORNING.  
CHANCE OF SHOWERS AND SLIGHT CHANCE OF THUNDERSTORMS AFTER  
MIDNIGHT. WAVES 2 TO 4 FEET SUBSIDING TO 1 TO 2 FEET IN THE LATE  
EVENING AND OVERNIGHT.    
MONDAY  
SOUTH WIND 10 TO 15 KNOTS WITH GUSTS TO AROUND 20 KNOTS  
VEERING SOUTHWEST WITH GUSTS TO AROUND 20 KNOTS LATE IN THE  
AFTERNOON. SLIGHT CHANCE OF THUNDERSTORMS IN THE MORNING. CHANCE  
OF SHOWERS THROUGH THE DAY. WAVES 1 TO 2 FEET BUILDING TO 2 TO  
4 FEET IN THE AFTERNOON.  
 
 
LMZ644-300900-  
PORT WASHINGTON TO NORTH POINT LIGHT WI-  
310 PM CDT SAT AUG 29 2026  
   
THROUGH EARLY EVENING  
SOUTH WIND 10 TO 15 KNOTS. CLOUDY WITH A  
50 PERCENT CHANCE OF SHOWERS. WAVES AROUND 1 FOOT.    
TONIGHT  
SOUTH WIND 10 TO 15 KNOTS. GUSTS UP TO 20 KNOTS.  
SLIGHT CHANCE OF SHOWERS THROUGH AROUND MIDNIGHT, THEN CHANCE OF  
SHOWERS AND SLIGHT CHANCE OF THUNDERSTORMS AFTER MIDNIGHT. WAVES  
1 TO 2 FEET BUILDING TO 2 TO 4 FEET IN THE LATE EVENING AND  
OVERNIGHT.    
SUNDAY  
SOUTH WIND 10 TO 15 KNOTS VEERING SOUTHWEST LATE IN THE  
AFTERNOON. GUSTS UP TO 20 KNOTS. CHANCE OF SHOWERS AND SLIGHT  
CHANCE OF THUNDERSTORMS. WAVES 2 TO 4 FEET SUBSIDING TO 1 TO  
2 FEET IN THE AFTERNOON.    
SUNDAY NIGHT  
SOUTH WIND 5 TO 15 KNOTS BACKING SOUTHEAST 5 TO  
10 KNOTS IN THE LATE EVENING AND EARLY MORNING, THEN VEERING  
SOUTH EARLY IN THE MORNING. SLIGHT CHANCE OF SHOWERS THROUGH  
AROUND MIDNIGHT. SLIGHT CHANCE OF THUNDERSTORMS THROUGH THE  
NIGHT. CHANCE OF SHOWERS AFTER MIDNIGHT. WAVES 1 TO 2 FEET.    
MONDAY  
SOUTHWEST WIND 10 TO 15 KNOTS BACKING SOUTH WITH GUSTS  
TO AROUND 20 KNOTS IN THE LATE MORNING AND EARLY AFTERNOON, THEN  
VEERING SOUTHWEST LATE IN THE AFTERNOON. SLIGHT CHANCE OF  
THUNDERSTORMS IN THE MORNING. CHANCE OF SHOWERS THROUGH THE DAY.  
WAVES 1 TO 2 FEET.  
 
 
LMZ645-300900-  
NORTH POINT LIGHT TO WIND POINT WI-  
310 PM CDT SAT AUG 29 2026  
   
THROUGH EARLY EVENING  
SOUTH WIND 10 TO 15 KNOTS. CLOUDY WITH A  
50 PERCENT CHANCE OF SHOWERS. WAVES 1 TO 2 FEET.    
TONIGHT  
SOUTH WIND 10 TO 15 KNOTS RISING TO 15 TO 20 KNOTS  
LATE IN THE EVENING, THEN BECOMING SOUTH 15 TO 20 KNOTS AFTER  
MIDNIGHT. SLIGHT CHANCE OF SHOWERS THROUGH AROUND MIDNIGHT, THEN  
CHANCE OF SHOWERS AND SLIGHT CHANCE OF THUNDERSTORMS AFTER  
MIDNIGHT. WAVES 1 TO 2 FEET BUILDING TO 2 TO 4 FEET IN THE LATE  
EVENING AND OVERNIGHT.    
SUNDAY  
SOUTH WIND 15 TO 20 KNOTS BECOMING SOUTHWEST 10 TO  
15 KNOTS IN THE AFTERNOON. CHANCE OF THUNDERSTORMS IN THE  
MORNING. CHANCE OF SHOWERS THROUGH THE DAY. SLIGHT CHANCE OF  
THUNDERSTORMS IN THE AFTERNOON. WAVES 2 TO 4 FEET.    
SUNDAY NIGHT  
SOUTH WIND 10 TO 15 KNOTS EASING TO 5 TO 10 KNOTS  
IN THE LATE EVENING AND EARLY MORNING, THEN RISING TO 10 TO  
15 KNOTS EARLY IN THE MORNING. SLIGHT CHANCE OF SHOWERS THROUGH  
AROUND MIDNIGHT. SLIGHT CHANCE OF THUNDERSTORMS THROUGH THE  
NIGHT. CHANCE OF SHOWERS AFTER MIDNIGHT. WAVES 1 TO 2 FEET.    
MONDAY  
SOUTHWEST WIND 10 TO 15 KNOTS WITH GUSTS TO AROUND  
20 KNOTS BACKING SOUTH IN THE LATE MORNING AND EARLY AFTERNOON,  
THEN VEERING SOUTHWEST LATE IN THE AFTERNOON. CHANCE OF SHOWERS  
AND SLIGHT CHANCE OF THUNDERSTORMS IN THE MORNING. WAVES 1 TO  
2 FEET.  
 
 
LMZ646-300900-  
WIND POINT WI TO WINTHROP HARBOR IL-  
310 PM CDT SAT AUG 29 2026  
   
THROUGH EARLY EVENING  
SOUTH WIND 10 TO 15 KNOTS. CLOUDY WITH A  
50 PERCENT CHANCE OF SHOWERS. WAVES 1 TO 2 FEET.    
TONIGHT  
SOUTH WIND 10 TO 15 KNOTS BECOMING SOUTH 10 TO  
15 KNOTS WITH GUSTS TO AROUND 20 KNOTS IN THE LATE EVENING AND  
EARLY MORNING, THEN RISING TO 15 TO 20 KNOTS WITH GUSTS TO AROUND  
25 KNOTS EARLY IN THE MORNING. SLIGHT CHANCE OF SHOWERS THROUGH  
AROUND MIDNIGHT, THEN CHANCE OF SHOWERS AND SLIGHT CHANCE OF  
THUNDERSTORMS AFTER MIDNIGHT. WAVES 1 TO 3 FEET BUILDING TO 2 TO  
4 FEET IN THE LATE EVENING AND OVERNIGHT.    
SUNDAY  
SOUTH WIND 15 TO 20 KNOTS BECOMING SOUTHWEST 10 TO  
15 KNOTS IN THE AFTERNOON. GUSTS UP TO 25 KNOTS. CHANCE OF  
THUNDERSTORMS IN THE MORNING. CHANCE OF SHOWERS THROUGH THE DAY.  
SLIGHT CHANCE OF THUNDERSTORMS IN THE AFTERNOON. WAVES 2 TO  
4 FEET.    
SUNDAY NIGHT  
SOUTH WIND 10 TO 15 KNOTS EASING TO 5 TO 10 KNOTS  
IN THE LATE EVENING AND EARLY MORNING, THEN RISING TO 10 TO  
15 KNOTS EARLY IN THE MORNING. SLIGHT CHANCE OF SHOWERS AND  
THUNDERSTORMS. WAVES 1 TO 2 FEET.    
MONDAY  
SOUTHWEST WIND 10 TO 15 KNOTS BACKING SOUTH IN THE LATE  
MORNING AND AFTERNOON. CHANCE OF SHOWERS AND SLIGHT CHANCE OF  
THUNDERSTORMS IN THE MORNING. WAVES 1 TO 2 FEET.  
 
 
SEE LAKE MICHIGAN OPEN WATERS FORECAST FOR TUESDAY THROUGH THURSDAY.  
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