329  
FZUS52 KCHS 310939  
CWFCHS  
 
COASTAL WATERS FORECAST  
NATIONAL WEATHER SERVICE CHARLESTON SC  
539 AM EDT FRI JUL 31 2026  
 
SOUTH SANTEE RIVER SC TO ALTAMAHA SOUND GA OUT 60 NM, INCLUDING  
CHARLESTON HARBOR AND GRAYS REEF NATIONAL MARINE SANCTUARY  
 
AMZ300-312300-  
539 AM EDT FRI JUL 31 2026  
 
.SYNOPSIS FOR THE COASTAL WATERS OF SOUTH COASTAL SOUTH CAROLINA  
AND NORTH COASTAL GEORGIA...  
A STATIONARY FRONT WILL LINGER ACROSS SOUTHEAST SOUTH CAROLINA  
AND SOUTHEAST GEORGIA THROUGH TONIGHT, FOLLOWED BY UNSETTLED  
WEATHER THROUGH EARLY NEXT WEEK.  
 

 
 
AMZ340-312300-  
CHARLESTON HARBOR-  
539 AM EDT FRI JUL 31 2026  
   
TODAY
 
E WINDS 5 KT, BECOMING SE THIS AFTERNOON.    
TONIGHT
 
S WINDS 5 TO 10 KT.    
SAT
 
SE WINDS 5 TO 10 KT, INCREASING TO 10 TO 15 KT WITH GUSTS  
TO 20 KT IN THE AFTERNOON. A CHANCE OF SHOWERS WITH A SLIGHT  
CHANCE OF TSTMS.    
SAT NIGHT
 
S WINDS 10 TO 15 KT, DIMINISHING TO 5 TO 10 KT AFTER  
MIDNIGHT. A CHANCE OF TSTMS. A CHANCE OF SHOWERS IN THE EVENING,  
THEN SHOWERS LIKELY AFTER MIDNIGHT.    
SUN
 
SW WINDS 10 TO 15 KT, BECOMING S 15 TO 20 KT IN THE  
AFTERNOON. WAVES 1 TO 2 FT. SHOWERS WITH A CHANCE OF TSTMS.    
SUN NIGHT
 
SW WINDS 10 TO 15 KT WITH GUSTS TO 25 KT. SHOWERS.  
TSTMS LIKELY, MAINLY IN THE EVENING.    
MON
 
SW WINDS 10 TO 15 KT. SHOWERS WITH TSTMS LIKELY.    
MON NIGHT
 
SW WINDS 10 TO 15 KT. SHOWERS LIKELY WITH A CHANCE  
OF TSTMS.    
TUE
 
SW WINDS 5 TO 10 KT. A CHANCE OF SHOWERS AND TSTMS.    
TUE NIGHT
 
S WINDS 5 TO 10 KT. A CHANCE OF SHOWERS AND TSTMS.  
 
WINDS AND WAVES HIGHER IN AND NEAR TSTMS.  
 
UNLESS OTHERWISE NOTED, WAVES 1 FOOT OR LESS.  
 
CHARLESTON HARBOR WATER TEMPERATURE 86 DEGREES.  
 

 
 
AMZ360-312300-  
COASTAL WATERS FROM SOUTH SANTEE RIVER TO EDISTO BEACH SC OUT  
20 NM-  
539 AM EDT FRI JUL 31 2026  
   
TODAY
 
E WINDS 5 KT, BECOMING SE THIS AFTERNOON. SEAS 2 FT.  
WAVE DETAIL: S 2 FT AT 7 SECONDS.    
TONIGHT
 
S WINDS 10 KT. SEAS 2 FT. WAVE DETAIL: S 2 FT AT  
5 SECONDS AND SE 1 FOOT AT 8 SECONDS.    
SAT
 
SE WINDS 5 TO 10 KT, INCREASING TO 10 TO 15 KT WITH GUSTS  
TO 20 KT IN THE AFTERNOON. SEAS 2 FT. WAVE DETAIL: S 2 FT AT  
4 SECONDS AND SE 2 FT AT 8 SECONDS. A SLIGHT CHANCE OF SHOWERS. A  
SLIGHT CHANCE OF TSTMS IN THE AFTERNOON.    
SAT NIGHT
 
S WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. SEAS 2 TO  
3 FT. WAVE DETAIL: SE 3 FT AT 4 SECONDS AND SE 1 FOOT AT  
9 SECONDS. A CHANCE OF TSTMS. A CHANCE OF SHOWERS IN THE EVENING,  
THEN SHOWERS AFTER MIDNIGHT.    
SUN
 
S WINDS 15 TO 20 KT WITH GUSTS TO 25 KT. SEAS 3 TO 4 FT,  
BUILDING TO 4 TO 6 FT IN THE AFTERNOON. WAVE DETAIL: S 4 FT AT  
5 SECONDS AND SE 1 FOOT AT 9 SECONDS, BECOMING S 6 FT AT  
6 SECONDS. SHOWERS WITH A CHANCE OF TSTMS.    
SUN NIGHT
 
SW WINDS 20 KT WITH GUSTS TO 25 KT. SEAS 5 TO 6 FT.  
WAVE DETAIL: S 6 FT AT 6 SECONDS. SHOWERS WITH TSTMS LIKELY IN  
THE EVENING, THEN SHOWERS WITH A CHANCE OF TSTMS AFTER MIDNIGHT.    
MON
 
SW WINDS 15 TO 20 KT. SEAS 4 TO 6 FT. SHOWERS WITH TSTMS  
LIKELY.    
MON NIGHT
 
SW WINDS 15 TO 20 KT. SEAS 4 TO 5 FT. SHOWERS WITH A  
CHANCE OF TSTMS.    
TUE
 
SW WINDS 10 KT. SEAS 3 FT. A CHANCE OF SHOWERS AND TSTMS.    
TUE NIGHT
 
S WINDS 5 TO 10 KT. SEAS 3 FT. A CHANCE OF SHOWERS  
AND TSTMS.  
 
WINDS AND SEAS HIGHER IN AND NEAR TSTMS.  
 

 
 
AMZ362-312300-  
COASTAL WATERS FROM EDISTO BEACH SC TO SAVANNAH GA OUT 20 NM-  
539 AM EDT FRI JUL 31 2026  
   
TODAY
 
SE WINDS 5 TO 10 KT. SEAS 2 FT. WAVE DETAIL: SE 2 FT AT  
6 SECONDS.    
TONIGHT
 
S WINDS 10 KT. SEAS 2 FT. WAVE DETAIL: S 2 FT AT  
5 SECONDS AND SE 1 FOOT AT 8 SECONDS.    
SAT
 
S WINDS 5 TO 10 KT, BECOMING SE 10 TO 15 KT WITH GUSTS TO  
20 KT IN THE AFTERNOON. SEAS 2 FT. WAVE DETAIL: S 2 FT AT  
4 SECONDS AND SE 2 FT AT 8 SECONDS. A SLIGHT CHANCE OF TSTMS. A  
SLIGHT CHANCE OF SHOWERS.    
SAT NIGHT
 
S WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. SEAS 2 TO  
3 FT. WAVE DETAIL: S 3 FT AT 5 SECONDS AND SE 1 FOOT AT  
8 SECONDS. SHOWERS WITH A CHANCE OF TSTMS.    
SUN
 
SW WINDS 15 TO 20 KT WITH GUSTS TO 25 KT. SEAS 3 TO 4 FT,  
BUILDING TO 4 TO 5 FT IN THE AFTERNOON. WAVE DETAIL: S 3 FT AT  
5 SECONDS AND SE 2 FT AT 9 SECONDS, BECOMING S 5 FT AT 5 SECONDS  
AND SE 2 FT AT 8 SECONDS. SHOWERS WITH A CHANCE OF TSTMS.    
SUN NIGHT
 
SW WINDS 15 TO 20 KT WITH GUSTS TO 25 KT. SEAS 4 TO  
6 FT, SUBSIDING TO 4 TO 5 FT AFTER MIDNIGHT. WAVE DETAIL: S 5 FT  
AT 6 SECONDS, BECOMING S 5 FT AT 7 SECONDS. SHOWERS. TSTMS  
LIKELY, MAINLY IN THE EVENING.    
MON
 
SW WINDS 15 TO 20 KT. SEAS 4 TO 5 FT. SHOWERS WITH TSTMS  
LIKELY.    
MON NIGHT
 
SW WINDS 15 TO 20 KT. SEAS 3 TO 4 FT. SHOWERS LIKELY  
WITH A CHANCE OF TSTMS.    
TUE
 
SW WINDS 5 TO 10 KT. SEAS 2 TO 3 FT. A CHANCE OF SHOWERS  
AND TSTMS.    
TUE NIGHT
 
S WINDS 5 TO 10 KT. SEAS 2 TO 3 FT. A CHANCE OF  
SHOWERS AND TSTMS.  
 
WINDS AND SEAS HIGHER IN AND NEAR TSTMS.  
 

 
 
AMZ364-312300-  
COASTAL WATERS FROM SAVANNAH GA TO ALTAMAHA SOUND GA OUT 20 NM,  
INCLUDING GRAYS REEF NATIONAL MARINE SANCTUARY-  
539 AM EDT FRI JUL 31 2026  
   
TODAY
 
SE WINDS 5 TO 10 KT. SEAS 2 FT. WAVE DETAIL: S 2 FT AT  
5 SECONDS AND E 1 FOOT AT 8 SECONDS.    
TONIGHT
 
S WINDS 5 TO 10 KT. SEAS 2 FT. WAVE DETAIL: SE 2 FT AT  
5 SECONDS AND SE 1 FOOT AT 8 SECONDS.    
SAT
 
S WINDS 5 TO 10 KT, INCREASING TO 10 TO 15 KT IN THE  
AFTERNOON. SEAS 2 FT. WAVE DETAIL: S 2 FT AT 4 SECONDS AND SE  
1 FOOT AT 8 SECONDS. A SLIGHT CHANCE OF SHOWERS AND TSTMS IN THE  
AFTERNOON.    
SAT NIGHT
 
S WINDS 10 TO 15 KT. SEAS 2 TO 3 FT. WAVE DETAIL: S  
3 FT AT 5 SECONDS AND E 1 FOOT AT 9 SECONDS. SHOWERS WITH A  
CHANCE OF TSTMS.    
SUN
 
SW WINDS 15 TO 20 KT WITH GUSTS TO 25 KT. SEAS 3 TO 4 FT.  
WAVE DETAIL: S 4 FT AT 5 SECONDS AND SE 1 FOOT AT 9 SECONDS.  
SHOWERS LIKELY WITH A SLIGHT CHANCE OF TSTMS IN THE MORNING, THEN  
SHOWERS WITH A CHANCE OF TSTMS IN THE AFTERNOON.    
SUN NIGHT
 
SW WINDS 15 TO 20 KT WITH GUSTS TO 25 KT. SEAS 4 TO  
5 FT. WAVE DETAIL: SE 5 FT AT 6 SECONDS. A CHANCE OF TSTMS.  
SHOWERS.   
MON
 
SW WINDS 15 TO 20 KT. SEAS 3 TO 4 FT. SHOWERS WITH TSTMS  
LIKELY.    
MON NIGHT
 
SW WINDS 15 TO 20 KT. SEAS 3 TO 4 FT. A CHANCE OF  
SHOWERS AND TSTMS.    
TUE
 
SW WINDS 5 TO 10 KT. SEAS 2 TO 3 FT. A CHANCE OF SHOWERS  
AND TSTMS.    
TUE NIGHT
 
S WINDS 5 TO 10 KT. SEAS 2 TO 3 FT. A CHANCE OF  
SHOWERS AND TSTMS.  
 
WINDS AND SEAS HIGHER IN AND NEAR TSTMS.  
 

 
 
AMZ380-312300-  
WATERS FROM SOUTH SANTEE RIVER SC TO EDISTO BEACH SC EXTENDING  
FROM 20 TO 60 NM-  
539 AM EDT FRI JUL 31 2026  
   
TODAY
 
NE WINDS 5 KT, BECOMING SE THIS AFTERNOON. SEAS 2 TO  
3 FT. WAVE DETAIL: S 2 FT AT 7 SECONDS AND NE 1 FOOT AT  
4 SECONDS.    
TONIGHT
 
S WINDS 5 TO 10 KT. SEAS 2 FT. WAVE DETAIL: S 2 FT AT  
5 SECONDS AND SE 2 FT AT 8 SECONDS.    
SAT
 
SE WINDS 5 TO 10 KT, INCREASING TO 10 TO 15 KT IN THE  
AFTERNOON. SEAS 2 FT. WAVE DETAIL: S 2 FT AT 4 SECONDS AND SE  
2 FT AT 7 SECONDS.    
SAT NIGHT
 
S WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. SEAS 2 TO  
3 FT, BUILDING TO 3 TO 4 FT AFTER MIDNIGHT. WAVE DETAIL: S 3 FT  
AT 4 SECONDS AND SE 2 FT AT 9 SECONDS, BECOMING S 4 FT AT  
5 SECONDS AND E 1 FOOT AT 9 SECONDS. A CHANCE OF TSTMS. A CHANCE  
OF SHOWERS IN THE EVENING, THEN SHOWERS AFTER MIDNIGHT.    
SUN
 
S WINDS 15 TO 20 KT WITH GUSTS TO 25 KT. SEAS 4 TO 5 FT,  
BUILDING TO 5 TO 6 FT IN THE AFTERNOON. WAVE DETAIL: S 4 FT AT  
5 SECONDS AND SE 3 FT AT 8 SECONDS, BECOMING S 5 FT AT 7 SECONDS.  
SHOWERS WITH A CHANCE OF TSTMS.    
SUN NIGHT
 
SW WINDS 20 KT WITH GUSTS TO 25 KT. SEAS 6 TO 7 FT.  
WAVE DETAIL: S 5 FT AT 7 SECONDS. TSTMS LIKELY. SHOWERS.   
MON
 
SW WINDS 15 TO 20 KT. SEAS 5 TO 6 FT. SHOWERS WITH A  
CHANCE OF TSTMS.    
MON NIGHT
 
SW WINDS 15 TO 20 KT. SEAS 4 TO 5 FT. SHOWERS LIKELY  
WITH A CHANCE OF TSTMS.    
TUE
 
SW WINDS 10 TO 15 KT. SEAS 3 TO 4 FT. A CHANCE OF SHOWERS  
AND TSTMS.    
TUE NIGHT
 
S WINDS 10 KT. SEAS 3 FT. A CHANCE OF SHOWERS AND  
TSTMS.  
 
WINDS AND SEAS HIGHER IN AND NEAR TSTMS.  
 

 
 
AMZ382-312300-  
WATERS FROM EDISTO BEACH SC TO SAVANNAH GA EXTENDING FROM 20 TO  
60 NM-  
539 AM EDT FRI JUL 31 2026  
   
TODAY
 
SE WINDS 5 TO 10 KT. SEAS 2 FT. WAVE DETAIL: S 2 FT AT  
5 SECONDS AND SE 1 FOOT AT 8 SECONDS.    
TONIGHT
 
SE WINDS 5 TO 10 KT. SEAS 2 FT. WAVE DETAIL: S 2 FT AT  
5 SECONDS AND SE 2 FT AT 8 SECONDS.    
SAT
 
SE WINDS 5 TO 10 KT, INCREASING TO 10 TO 15 KT IN THE  
AFTERNOON. SEAS 2 FT. WAVE DETAIL: S 2 FT AT 4 SECONDS AND SE  
2 FT AT 7 SECONDS. A SLIGHT CHANCE OF TSTMS. A SLIGHT CHANCE OF  
SHOWERS.    
SAT NIGHT
 
S WINDS 15 TO 20 KT. SEAS 2 TO 3 FT, BUILDING TO  
3 TO 4 FT AFTER MIDNIGHT. WAVE DETAIL: S 3 FT AT 4 SECONDS AND SE  
1 FOOT AT 8 SECONDS, BECOMING S 4 FT AT 5 SECONDS AND E 1 FOOT AT  
9 SECONDS. A CHANCE OF TSTMS. A CHANCE OF SHOWERS IN THE EVENING,  
THEN SHOWERS AFTER MIDNIGHT.    
SUN
 
SW WINDS 15 TO 20 KT WITH GUSTS TO 25 KT. SEAS 4 TO 5 FT,  
BUILDING TO 4 TO 6 FT IN THE AFTERNOON. WAVE DETAIL: S 4 FT AT  
5 SECONDS AND SE 2 FT AT 9 SECONDS, BECOMING S 5 FT AT 6 SECONDS.  
SHOWERS WITH A CHANCE OF TSTMS.    
SUN NIGHT
 
SW WINDS 20 TO 25 KT. SEAS 5 TO 6 FT. WAVE DETAIL: S  
5 FT AT 7 SECONDS. SHOWERS WITH TSTMS LIKELY.    
MON
 
SW WINDS 15 TO 20 KT. SEAS 4 TO 6 FT. SHOWERS LIKELY WITH  
A CHANCE OF TSTMS.    
MON NIGHT
 
SW WINDS 15 TO 20 KT. SEAS 4 TO 5 FT. SHOWERS LIKELY  
WITH A CHANCE OF TSTMS.    
TUE
 
SW WINDS 10 TO 15 KT. SEAS 3 TO 4 FT. A CHANCE OF SHOWERS  
AND TSTMS.    
TUE NIGHT
 
S WINDS 10 KT. SEAS 3 FT. A CHANCE OF SHOWERS AND  
TSTMS.  
 
WINDS AND SEAS HIGHER IN AND NEAR TSTMS.  
 

 
 
AMZ384-312300-  
WATERS FROM SAVANNAH GA TO ALTAMAHA SOUND GA EXTENDING FROM 20 TO  
60 NM-  
539 AM EDT FRI JUL 31 2026  
   
TODAY
 
SE WINDS 5 TO 10 KT. SEAS 2 FT. WAVE DETAIL: S 2 FT AT  
5 SECONDS AND SE 1 FOOT AT 8 SECONDS.    
TONIGHT
 
S WINDS 5 TO 10 KT. SEAS 2 FT. WAVE DETAIL: S 2 FT AT  
4 SECONDS AND SE 1 FOOT AT 9 SECONDS.    
SAT
 
S WINDS 5 TO 10 KT, INCREASING TO 10 TO 15 KT IN THE  
AFTERNOON. SEAS 2 FT. WAVE DETAIL: S 2 FT AT 4 SECONDS AND SE  
2 FT AT 8 SECONDS. A SLIGHT CHANCE OF SHOWERS AND TSTMS.    
SAT NIGHT
 
S WINDS 15 KT WITH GUSTS TO 20 KT. SEAS 2 TO 3 FT,  
BUILDING TO 3 TO 4 FT AFTER MIDNIGHT. WAVE DETAIL: S 3 FT AT  
4 SECONDS AND SE 1 FOOT AT 9 SECONDS, BECOMING S 3 FT AT  
5 SECONDS AND SE 1 FOOT AT 9 SECONDS. A CHANCE OF TSTMS. SHOWERS.   
SUN
 
SW WINDS 15 TO 20 KT WITH GUSTS TO 25 KT. SEAS 3 TO 4 FT,  
BUILDING TO 4 TO 5 FT IN THE AFTERNOON. WAVE DETAIL: SW 3 FT AT  
5 SECONDS AND SE 2 FT AT 9 SECONDS, BECOMING S 4 FT AT 5 SECONDS  
AND SE 2 FT AT 8 SECONDS. SHOWERS. A CHANCE OF TSTMS, MAINLY IN  
THE MORNING.    
SUN NIGHT
 
S WINDS 20 TO 25 KT, BECOMING SW 15 TO 20 KT AFTER  
MIDNIGHT. SEAS 4 TO 6 FT, SUBSIDING TO 4 TO 5 FT AFTER MIDNIGHT.  
WAVE DETAIL: S 5 FT AT 5 SECONDS AND SE 3 FT AT 8 SECONDS,  
BECOMING S 4 FT AT 6 SECONDS. SHOWERS LIKELY WITH A CHANCE OF  
TSTMS.    
MON
 
SW WINDS 15 TO 20 KT. SEAS 4 TO 5 FT. SHOWERS LIKELY WITH  
A CHANCE OF TSTMS.    
MON NIGHT
 
SW WINDS 10 TO 15 KT. SEAS 3 TO 4 FT. A CHANCE OF  
SHOWERS AND TSTMS.    
TUE
 
SW WINDS 5 TO 10 KT. SEAS 2 TO 3 FT. A CHANCE OF SHOWERS  
AND TSTMS.    
TUE NIGHT
 
S WINDS 10 KT. SEAS 2 TO 3 FT. A CHANCE OF SHOWERS  
AND TSTMS.  
 
WINDS AND SEAS HIGHER IN AND NEAR TSTMS.  
 

 
 
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