965
FZUS52 KCHS 202140
CWFCHS
COASTAL WATERS FORECAST
NATIONAL WEATHER SERVICE CHARLESTON SC
540 PM EDT THU AUG 20 2026
SOUTH SANTEE RIVER SC TO ALTAMAHA SOUND GA OUT 60 NM, INCLUDING
CHARLESTON HARBOR AND GRAYS REEF NATIONAL MARINE SANCTUARY
AMZ300-211100-
540 PM EDT THU AUG 20 2026
.SYNOPSIS FOR THE COASTAL WATERS OF SOUTH COASTAL SOUTH CAROLINA
AND NORTH COASTAL GEORGIA...
TYPICAL SUMMERTIME CONDITIONS WILL PERSIST ACROSS THE LOCAL
WATERS THROUGH THE WEEKEND. SOUTHWEST WINDS COULD INCREASE LATE
IN THE WEEKEND AS A FRONT SETTLES INTO THE REGION.
AMZ340-211100-
CHARLESTON HARBOR-
540 PM EDT THU AUG 20 2026
TONIGHT
S WINDS 5 TO 10 KT, BECOMING SW AFTER MIDNIGHT.
FRI
SW WINDS 5 TO 10 KT, BECOMING S 10 TO 15 KT WITH GUSTS TO
20 KT IN THE AFTERNOON.
FRI NIGHT
SW WINDS 10 TO 15 KT. A CHANCE OF SHOWERS AND TSTMS.
SAT
SW WINDS 5 TO 10 KT, INCREASING TO 10 TO 15 KT IN THE
AFTERNOON. A CHANCE OF TSTMS. A CHANCE OF SHOWERS IN THE MORNING,
THEN SHOWERS LIKELY IN THE AFTERNOON.
SAT NIGHT
SW WINDS 5 TO 10 KT. A CHANCE OF TSTMS. SHOWERS
LIKELY, MAINLY IN THE EVENING.
SUN
SW WINDS 5 TO 10 KT. A SLIGHT CHANCE OF SHOWERS AND TSTMS
IN THE AFTERNOON.
SUN NIGHT
SW WINDS 5 TO 10 KT. A SLIGHT CHANCE OF SHOWERS AND
TSTMS.
MON
SW WINDS 5 TO 10 KT. A SLIGHT CHANCE OF SHOWERS AND TSTMS.
MON NIGHT
S WINDS 5 KT. A SLIGHT CHANCE OF SHOWERS AND 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 87 DEGREES.
AMZ360-211100-
COASTAL WATERS FROM SOUTH SANTEE RIVER TO EDISTO BEACH SC OUT
20 NM-
540 PM EDT THU AUG 20 2026
TONIGHT
S WINDS 10 TO 15 KT, BECOMING SW AFTER MIDNIGHT. SEAS
2 TO 3 FT. WAVE DETAIL: S 2 FT AT 4 SECONDS AND SE 2 FT AT
8 SECONDS.
FRI
SW WINDS 10 TO 15 KT, BECOMING S 15 TO 20 KT IN THE
AFTERNOON. SEAS 2 TO 3 FT, BUILDING TO 3 TO 4 FT IN THE
AFTERNOON. WAVE DETAIL: S 2 FT AT 4 SECONDS AND SE 1 FOOT AT
8 SECONDS, BECOMING S 3 FT AT 4 SECONDS AND SE 1 FOOT AT
8 SECONDS.
FRI NIGHT
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
8 SECONDS. A CHANCE OF SHOWERS AND TSTMS.
SAT
SW WINDS 10 TO 15 KT. SEAS 2 TO 3 FT. WAVE DETAIL: S 3 FT
AT 5 SECONDS AND E 1 FOOT AT 8 SECONDS. A CHANCE OF TSTMS. A
CHANCE OF SHOWERS.
SAT NIGHT
SW WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. SEAS 3 FT.
WAVE DETAIL: S 3 FT AT 5 SECONDS AND E 1 FOOT AT 9 SECONDS.
SHOWERS LIKELY WITH A CHANCE OF TSTMS.
SUN
SW 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. A CHANCE OF SHOWERS AND
TSTMS, MAINLY IN THE MORNING.
SUN NIGHT
SW WINDS 10 TO 15 KT. SEAS 2 TO 3 FT. A SLIGHT
CHANCE OF SHOWERS AND TSTMS.
MON
SW WINDS 5 TO 10 KT. SEAS 2 TO 3 FT. A SLIGHT CHANCE OF
SHOWERS AND TSTMS.
MON NIGHT
S WINDS 5 TO 10 KT. SEAS 2 FT. A SLIGHT CHANCE OF
SHOWERS AND TSTMS.
TUE
SW WINDS 5 TO 10 KT. SEAS 2 FT. A CHANCE OF SHOWERS AND
TSTMS.
TUE NIGHT
S WINDS 10 KT. SEAS 2 FT. A CHANCE OF SHOWERS AND
TSTMS.
WINDS AND SEAS HIGHER IN AND NEAR TSTMS.
AMZ362-211100-
COASTAL WATERS FROM EDISTO BEACH SC TO SAVANNAH GA OUT 20 NM-
540 PM EDT THU AUG 20 2026
TONIGHT
S WINDS 10 TO 15 KT, BECOMING SW LATE. SEAS 2 TO 3 FT.
WAVE DETAIL: S 2 FT AT 4 SECONDS AND SE 2 FT AT 8 SECONDS.
FRI
SW WINDS 10 TO 15 KT, BECOMING S 15 TO 20 KT WITH GUSTS TO
25 KT IN THE AFTERNOON. SEAS 2 TO 3 FT, BUILDING TO 3 TO 4 FT IN
THE AFTERNOON. WAVE DETAIL: S 2 FT AT 4 SECONDS AND SE 1 FOOT AT
8 SECONDS, BECOMING S 3 FT AT 4 SECONDS AND SE 1 FOOT AT
8 SECONDS.
FRI NIGHT
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
8 SECONDS. A CHANCE OF SHOWERS AND TSTMS.
SAT
SW WINDS 10 TO 15 KT. SEAS 2 TO 3 FT. WAVE DETAIL: S 3 FT
AT 5 SECONDS AND SE 1 FOOT AT 8 SECONDS. A CHANCE OF SHOWERS AND
TSTMS.
SAT NIGHT
SW WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. SEAS 2 TO
3 FT. WAVE DETAIL: S 3 FT AT 5 SECONDS AND E 1 FOOT AT 9 SECONDS.
A CHANCE OF SHOWERS AND TSTMS.
SUN
W WINDS 5 TO 10 KT, BECOMING SW 10 TO 15 KT IN THE
AFTERNOON. SEAS 2 TO 3 FT. WAVE DETAIL: S 3 FT AT 5 SECONDS AND E
1 FOOT AT 9 SECONDS. A SLIGHT CHANCE OF SHOWERS AND TSTMS IN THE
MORNING.
SUN NIGHT
SW WINDS 10 TO 15 KT. SEAS 2 TO 3 FT. A SLIGHT
CHANCE OF SHOWERS AND TSTMS.
MON
SW WINDS 5 TO 10 KT. SEAS 2 TO 3 FT. A SLIGHT CHANCE OF
SHOWERS AND TSTMS.
MON NIGHT
S WINDS 5 TO 10 KT. SEAS 2 FT. A SLIGHT CHANCE OF
SHOWERS AND TSTMS.
TUE
SW WINDS 5 TO 10 KT. SEAS 2 FT. A CHANCE OF SHOWERS AND
TSTMS.
TUE NIGHT
SW WINDS 10 KT. SEAS 2 FT. A CHANCE OF SHOWERS AND
TSTMS.
WINDS AND SEAS HIGHER IN AND NEAR TSTMS.
AMZ364-211100-
COASTAL WATERS FROM SAVANNAH GA TO ALTAMAHA SOUND GA OUT 20 NM,
INCLUDING GRAYS REEF NATIONAL MARINE SANCTUARY-
540 PM EDT THU AUG 20 2026
TONIGHT
S WINDS 10 TO 15 KT, BECOMING SW LATE. SEAS 2 TO 3 FT.
WAVE DETAIL: S 2 FT AT 4 SECONDS AND SE 1 FOOT AT 9 SECONDS.
FRI
SW WINDS 10 TO 15 KT, BECOMING S 15 TO 20 KT IN THE
AFTERNOON. SEAS 2 TO 3 FT. WAVE DETAIL: S 3 FT AT 4 SECONDS AND
SE 1 FOOT AT 8 SECONDS.
FRI NIGHT
S WINDS 15 TO 20 KT, BECOMING SW 10 TO 15 KT AFTER
MIDNIGHT. SEAS 3 TO 4 FT, SUBSIDING TO 2 TO 3 FT AFTER MIDNIGHT.
WAVE DETAIL: S 4 FT AT 5 SECONDS AND SE 1 FOOT AT 8 SECONDS,
BECOMING S 3 FT AT 5 SECONDS AND SE 1 FOOT AT 8 SECONDS. A CHANCE
OF SHOWERS AND TSTMS.
SAT
SW WINDS 10 TO 15 KT. SEAS 2 TO 3 FT. WAVE DETAIL: S 2 FT
AT 5 SECONDS AND SE 1 FOOT AT 8 SECONDS. A SLIGHT CHANCE OF
SHOWERS AND TSTMS IN THE MORNING, THEN A CHANCE OF SHOWERS AND
TSTMS IN THE AFTERNOON.
SAT NIGHT
SW WINDS 10 TO 15 KT. SEAS 2 TO 3 FT. WAVE DETAIL: S
3 FT AT 4 SECONDS AND SE 1 FOOT AT 9 SECONDS. A CHANCE OF SHOWERS
AND TSTMS.
SUN
W WINDS 10 TO 15 KT, BECOMING S IN THE AFTERNOON. SEAS
2 TO 3 FT. WAVE DETAIL: S 2 FT AT 5 SECONDS AND SE 1 FOOT AT
9 SECONDS.
SUN NIGHT
S WINDS 10 TO 15 KT. SEAS 2 TO 3 FT.
MON
SW WINDS 5 TO 10 KT. SEAS 2 TO 3 FT.
MON NIGHT
S WINDS 10 TO 15 KT. SEAS 2 FT. A SLIGHT CHANCE OF
SHOWERS AND TSTMS.
TUE
S WINDS 5 TO 10 KT. SEAS 2 FT. A SLIGHT CHANCE OF SHOWERS
AND TSTMS.
TUE NIGHT
S WINDS 10 TO 15 KT. SEAS 2 FT. A CHANCE OF SHOWERS
AND TSTMS.
WINDS AND SEAS HIGHER IN AND NEAR TSTMS.
AMZ380-211100-
WATERS FROM SOUTH SANTEE RIVER SC TO EDISTO BEACH SC EXTENDING
FROM 20 TO 60 NM-
540 PM EDT THU AUG 20 2026
TONIGHT
S WINDS 5 TO 10 KT, BECOMING SW 10 TO 15 KT AFTER
MIDNIGHT. SEAS 2 TO 3 FT. WAVE DETAIL: S 2 FT AT 4 SECONDS AND SE
2 FT AT 8 SECONDS.
FRI
SW WINDS 10 TO 15 KT, BECOMING S 15 TO 20 KT IN THE
AFTERNOON. SEAS 3 TO 4 FT. WAVE DETAIL: SW 3 FT AT 4 SECONDS AND
SE 2 FT AT 8 SECONDS.
FRI NIGHT
SW WINDS 15 TO 20 KT WITH GUSTS TO 25 KT. SEAS 3 TO
4 FT. WAVE DETAIL: SW 4 FT AT 5 SECONDS AND E 2 FT AT 9 SECONDS.
A CHANCE OF SHOWERS AND TSTMS.
SAT
SW WINDS 10 TO 15 KT. SEAS 3 TO 4 FT. WAVE DETAIL: SW 4 FT
AT 5 SECONDS AND E 2 FT AT 9 SECONDS. A CHANCE OF TSTMS. A CHANCE
OF SHOWERS.
SAT NIGHT
SW WINDS 15 KT WITH GUSTS TO 20 KT. SEAS 3 TO 4 FT.
WAVE DETAIL: SW 3 FT AT 5 SECONDS AND E 1 FOOT AT 9 SECONDS. A
CHANCE OF TSTMS. SHOWERS.
SUN
SW WINDS 10 TO 15 KT. SEAS 3 TO 4 FT. WAVE DETAIL: SW 3 FT
AT 5 SECONDS AND E 1 FOOT AT 9 SECONDS. SHOWERS WITH A CHANCE OF
TSTMS IN THE MORNING, THEN A CHANCE OF SHOWERS WITH A SLIGHT
CHANCE OF TSTMS IN THE AFTERNOON.
SUN NIGHT
SW WINDS 10 TO 15 KT. SEAS 3 FT. A SLIGHT CHANCE OF
SHOWERS AND TSTMS.
MON
SW WINDS 5 TO 10 KT. SEAS 2 TO 3 FT. A SLIGHT CHANCE OF
SHOWERS AND TSTMS.
MON NIGHT
SW WINDS 5 TO 10 KT. SEAS 2 FT. A CHANCE OF SHOWERS
AND TSTMS.
TUE
SW WINDS 5 TO 10 KT. SEAS 2 FT. A CHANCE OF SHOWERS AND
TSTMS.
TUE NIGHT
S WINDS 10 KT. SEAS 2 TO 3 FT. SHOWERS LIKELY WITH A
CHANCE OF TSTMS.
WINDS AND SEAS HIGHER IN AND NEAR TSTMS.
AMZ382-211100-
WATERS FROM EDISTO BEACH SC TO SAVANNAH GA EXTENDING FROM 20 TO
60 NM-
540 PM EDT THU AUG 20 2026
TONIGHT
S WINDS 10 TO 15 KT, BECOMING SW LATE. SEAS 2 TO 3 FT.
WAVE DETAIL: S 2 FT AT 4 SECONDS AND SE 2 FT AT 9 SECONDS.
FRI
SW WINDS 10 TO 15 KT, INCREASING TO 15 TO 20 KT IN THE
AFTERNOON. SEAS 3 TO 4 FT. WAVE DETAIL: SW 3 FT AT 4 SECONDS AND
SE 2 FT AT 8 SECONDS.
FRI NIGHT
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. A CHANCE OF SHOWERS AND TSTMS.
SAT
SW WINDS 10 TO 15 KT. SEAS 3 TO 4 FT. WAVE DETAIL: SW 3 FT
AT 5 SECONDS AND SE 1 FOOT AT 9 SECONDS. A CHANCE OF SHOWERS. A
CHANCE OF TSTMS, MAINLY IN THE MORNING.
SAT NIGHT
SW WINDS 15 KT WITH GUSTS TO 20 KT. SEAS 3 TO 4 FT.
WAVE DETAIL: SW 3 FT AT 5 SECONDS AND SE 1 FOOT AT 9 SECONDS.
SHOWERS LIKELY WITH A CHANCE OF TSTMS.
SUN
SW WINDS 10 TO 15 KT. SEAS 3 TO 4 FT, SUBSIDING TO 2 TO
3 FT IN THE AFTERNOON. WAVE DETAIL: SW 3 FT AT 5 SECONDS AND SE
1 FOOT AT 9 SECONDS. A CHANCE OF SHOWERS AND TSTMS, MAINLY IN THE
MORNING.
SUN NIGHT
SW WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. SEAS 3 FT.
A SLIGHT CHANCE OF SHOWERS AND TSTMS AFTER MIDNIGHT.
MON
SW WINDS 10 TO 15 KT. SEAS 2 TO 3 FT. A SLIGHT CHANCE OF
SHOWERS AND TSTMS.
MON NIGHT
S WINDS 10 KT. SEAS 2 TO 3 FT. A SLIGHT CHANCE OF
SHOWERS AND TSTMS.
TUE
SW WINDS 10 KT. SEAS 2 TO 3 FT. A SLIGHT CHANCE OF SHOWERS
AND TSTMS.
TUE NIGHT
S WINDS 10 TO 15 KT. SEAS 2 TO 3 FT. A CHANCE OF
SHOWERS AND TSTMS.
WINDS AND SEAS HIGHER IN AND NEAR TSTMS.
AMZ384-211100-
WATERS FROM SAVANNAH GA TO ALTAMAHA SOUND GA EXTENDING FROM 20 TO
60 NM-
540 PM EDT THU AUG 20 2026
TONIGHT
S WINDS 10 TO 15 KT, BECOMING SW LATE. SEAS 2 TO 3 FT.
WAVE DETAIL: S 2 FT AT 4 SECONDS AND SE 2 FT AT 8 SECONDS.
FRI
SW WINDS 10 TO 15 KT. SEAS 2 TO 3 FT. WAVE DETAIL: S 3 FT
AT 4 SECONDS AND SE 2 FT AT 8 SECONDS.
FRI NIGHT
S WINDS 15 TO 20 KT, BECOMING SW 10 TO 15 KT AFTER
MIDNIGHT. SEAS 3 TO 4 FT. WAVE DETAIL: S 3 FT AT 5 SECONDS AND SE
1 FOOT AT 8 SECONDS. A CHANCE OF SHOWERS AND TSTMS.
SAT
SW WINDS 10 TO 15 KT. SEAS 2 TO 3 FT. WAVE DETAIL: S 3 FT
AT 5 SECONDS AND SE 1 FOOT AT 8 SECONDS. A SLIGHT CHANCE OF
TSTMS. A SLIGHT CHANCE OF SHOWERS IN THE MORNING, THEN A CHANCE
OF SHOWERS IN THE AFTERNOON.
SAT NIGHT
SW WINDS 15 KT WITH GUSTS TO 20 KT. SEAS 3 TO 4 FT.
WAVE DETAIL: SW 3 FT AT 4 SECONDS AND SE 1 FOOT AT 9 SECONDS. A
CHANCE OF SHOWERS AND TSTMS.
SUN
SW WINDS 10 TO 15 KT. SEAS 2 TO 3 FT. WAVE DETAIL: SW 3 FT
AT 4 SECONDS AND SE 1 FOOT AT 9 SECONDS. SHOWERS LIKELY WITH A
CHANCE OF TSTMS IN THE MORNING.
SUN NIGHT
SW WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. SEAS 2 TO
3 FT.
MON
SW WINDS 5 TO 10 KT. SEAS 2 TO 3 FT.
MON NIGHT
S WINDS 10 TO 15 KT. SEAS 2 TO 3 FT. A SLIGHT CHANCE
OF SHOWERS AND TSTMS.
TUE
SW WINDS 5 TO 10 KT. SEAS 2 TO 3 FT. A SLIGHT 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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