279
FZUS52 KCHS 211817
CWFCHS
COASTAL WATERS FORECAST
NATIONAL WEATHER SERVICE CHARLESTON SC
217 PM EDT FRI AUG 21 2026
SOUTH SANTEE RIVER SC TO ALTAMAHA SOUND GA OUT 60 NM, INCLUDING
CHARLESTON HARBOR AND GRAYS REEF NATIONAL MARINE SANCTUARY
AMZ300-220800-
217 PM EDT FRI AUG 21 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.
AMZ340-220800-
CHARLESTON HARBOR-
217 PM EDT FRI AUG 21 2026
THIS AFTERNOON
S WINDS 10 TO 15 KT.
TONIGHT
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.
SAT
SW WINDS 5 TO 10 KT. A CHANCE OF TSTMS. SHOWERS LIKELY,
MAINLY IN THE MORNING.
SAT NIGHT
SW WINDS 5 TO 10 KT. A CHANCE OF SHOWERS AND TSTMS.
SUN
SW WINDS 5 TO 10 KT. A SLIGHT CHANCE OF SHOWERS AND TSTMS
IN THE AFTERNOON.
SUN NIGHT
SW WINDS 10 KT, DIMINISHING TO 5 KT AFTER MIDNIGHT.
A SLIGHT CHANCE OF SHOWERS AND TSTMS IN THE EVENING.
MON
SW WINDS 5 TO 10 KT.
MON NIGHT
SW WINDS 5 TO 10 KT. A CHANCE OF SHOWERS WITH A
SLIGHT 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 88 DEGREES.
AMZ360-220800-
COASTAL WATERS FROM SOUTH SANTEE RIVER TO EDISTO BEACH SC OUT
20 NM-
217 PM EDT FRI AUG 21 2026
THIS AFTERNOON
S WINDS 10 TO 15 KT. SEAS 2 TO 3 FT. WAVE
DETAIL: S 2 FT AT 4 SECONDS AND SE 2 FT AT 8 SECONDS.
TONIGHT
SW WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. SEAS 2 TO
3 FT. WAVE DETAIL: S 3 FT AT 4 SECONDS AND SE 1 FOOT AT
8 SECONDS. A CHANCE OF TSTMS. A CHANCE OF SHOWERS IN THE EVENING,
THEN SHOWERS LIKELY AFTER MIDNIGHT.
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 SHOWERS AND
TSTMS.
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. A
CHANCE OF SHOWERS AND 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 SLIGHT CHANCE OF
SHOWERS AND TSTMS.
SUN NIGHT
SW WINDS 10 TO 15 KT. SEAS 2 TO 3 FT. WAVE DETAIL: S
2 FT AT 5 SECONDS AND E 1 FOOT AT 8 SECONDS. A SLIGHT CHANCE OF
SHOWERS AND TSTMS IN THE EVENING.
MON
SW WINDS 5 TO 10 KT. SEAS 2 TO 3 FT.
MON NIGHT
SW WINDS 10 TO 15 KT. SEAS 2 TO 3 FT. A CHANCE OF
SHOWERS WITH A SLIGHT CHANCE OF TSTMS.
TUE
SW WINDS 5 TO 10 KT. SEAS 2 FT. A 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.
AMZ362-220800-
COASTAL WATERS FROM EDISTO BEACH SC TO SAVANNAH GA OUT 20 NM-
217 PM EDT FRI AUG 21 2026
THIS AFTERNOON
S WINDS 10 TO 15 KT. SEAS 2 FT. WAVE DETAIL: S
2 FT AT 4 SECONDS AND SE 1 FOOT AT 8 SECONDS.
TONIGHT
SW WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. SEAS 3 FT.
WAVE DETAIL: S 3 FT AT 4 SECONDS AND SE 1 FOOT AT 8 SECONDS. A
SLIGHT CHANCE OF SHOWERS AND TSTMS IN THE EVENING, THEN A CHANCE
OF SHOWERS AND TSTMS AFTER MIDNIGHT.
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 4 SECONDS AND E 1 FOOT AT 9 SECONDS.
A CHANCE OF SHOWERS AND TSTMS, MAINLY IN THE EVENING.
SUN
W WINDS 10 TO 15 KT, BECOMING SW 5 TO 10 KT 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
SW WINDS 10 TO 15 KT. SEAS 2 FT. WAVE DETAIL: S 2 FT
AT 5 SECONDS AND E 1 FOOT AT 8 SECONDS. A SLIGHT CHANCE OF
SHOWERS AND TSTMS.
MON
SW WINDS 5 TO 10 KT. SEAS 2 FT.
MON NIGHT
SW WINDS 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 TO 15 KT. SEAS 2 FT. A CHANCE OF SHOWERS
AND TSTMS.
WINDS AND SEAS HIGHER IN AND NEAR TSTMS.
AMZ364-220800-
COASTAL WATERS FROM SAVANNAH GA TO ALTAMAHA SOUND GA OUT 20 NM,
INCLUDING GRAYS REEF NATIONAL MARINE SANCTUARY-
217 PM EDT FRI AUG 21 2026
THIS AFTERNOON
S WINDS 10 TO 15 KT. SEAS 2 TO 3 FT. WAVE
DETAIL: S 2 FT AT 4 SECONDS AND SE 1 FOOT AT 8 SECONDS.
TONIGHT
SW WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. SEAS 2 TO
3 FT. WAVE DETAIL: S 3 FT AT 4 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 4 SECONDS AND SE 1 FOOT AT 8 SECONDS. A CHANCE OF SHOWERS. A
SLIGHT CHANCE OF TSTMS IN THE MORNING, THEN A CHANCE OF TSTMS IN
THE AFTERNOON.
SAT NIGHT
SW WINDS 10 TO 15 KT. SEAS 2 TO 3 FT. WAVE DETAIL: S
2 FT AT 4 SECONDS AND SE 1 FOOT AT 9 SECONDS. A CHANCE OF SHOWERS
AND TSTMS, MAINLY IN THE EVENING.
SUN
W WINDS 10 TO 15 KT, BECOMING SW 5 TO 10 KT 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
SW WINDS 10 TO 15 KT. SEAS 2 FT. WAVE DETAIL: S 2 FT
AT 4 SECONDS AND E 1 FOOT AT 8 SECONDS.
MON
SW WINDS 5 TO 10 KT. SEAS 2 FT.
MON NIGHT
S WINDS 10 TO 15 KT. SEAS 2 FT. A SLIGHT CHANCE OF
SHOWERS AND TSTMS.
TUE
SW WINDS 10 TO 15 KT. SEAS 2 FT. A 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.
AMZ380-220800-
WATERS FROM SOUTH SANTEE RIVER SC TO EDISTO BEACH SC EXTENDING
FROM 20 TO 60 NM-
217 PM EDT FRI AUG 21 2026
THIS AFTERNOON
SW WINDS 10 TO 15 KT. SEAS 2 TO 3 FT. WAVE
DETAIL: SW 2 FT AT 4 SECONDS AND SE 2 FT AT 8 SECONDS.
TONIGHT
SW WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. SEAS 3 TO
4 FT. WAVE DETAIL: SW 3 FT AT 4 SECONDS AND E 2 FT AT 8 SECONDS.
A SLIGHT CHANCE OF SHOWERS AND TSTMS IN THE EVENING, THEN SHOWERS
LIKELY WITH A CHANCE OF TSTMS AFTER MIDNIGHT.
SAT
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. A CHANCE OF TSTMS.
SHOWERS LIKELY, 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 E 1 FOOT AT 9 SECONDS. A
CHANCE OF TSTMS. A CHANCE OF SHOWERS IN THE EVENING, THEN SHOWERS
LIKELY AFTER MIDNIGHT.
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. A CHANCE OF SHOWERS AND
TSTMS, MAINLY IN THE MORNING.
SUN NIGHT
SW WINDS 10 TO 15 KT. SEAS 2 TO 3 FT. WAVE DETAIL:
SW 2 FT AT 5 SECONDS AND E 1 FOOT AT 8 SECONDS. A SLIGHT CHANCE
OF SHOWERS AND TSTMS.
MON
SW WINDS 10 KT. SEAS 3 FT.
MON NIGHT
SW WINDS 10 KT. SEAS 2 TO 3 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. SHOWERS LIKELY WITH A
CHANCE OF TSTMS.
WINDS AND SEAS HIGHER IN AND NEAR TSTMS.
AMZ382-220800-
WATERS FROM EDISTO BEACH SC TO SAVANNAH GA EXTENDING FROM 20 TO
60 NM-
217 PM EDT FRI AUG 21 2026
THIS AFTERNOON
SW WINDS 10 TO 15 KT. SEAS 2 TO 3 FT. WAVE
DETAIL: SW 2 FT AT 4 SECONDS AND SE 2 FT AT 9 SECONDS.
TONIGHT
SW WINDS 15 KT WITH GUSTS TO 20 KT. SEAS 3 TO 4 FT.
WAVE DETAIL: S 3 FT AT 4 SECONDS AND SE 1 FOOT AT 9 SECONDS. A
CHANCE OF SHOWERS AND TSTMS AFTER MIDNIGHT.
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 AND
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 4 SECONDS AND SE 1 FOOT AT 9 SECONDS. A
CHANCE OF SHOWERS AND 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 IN THE
MORNING.
SUN 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. A SLIGHT CHANCE OF TSTMS IN THE EVENING, THEN A CHANCE
OF TSTMS AFTER MIDNIGHT.
MON
SW WINDS 10 TO 15 KT. SEAS 2 TO 3 FT.
MON NIGHT
SW WINDS 10 TO 15 KT. SEAS 2 TO 3 FT. A SLIGHT
CHANCE OF SHOWERS AND TSTMS.
TUE
SW WINDS 10 KT. SEAS 2 TO 3 FT. A 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.
AMZ384-220800-
WATERS FROM SAVANNAH GA TO ALTAMAHA SOUND GA EXTENDING FROM 20 TO
60 NM-
217 PM EDT FRI AUG 21 2026
THIS AFTERNOON
S WINDS 10 TO 15 KT. SEAS 2 FT. WAVE DETAIL: S
2 FT AT 3 SECONDS AND SE 2 FT AT 8 SECONDS.
TONIGHT
SW WINDS 15 KT WITH GUSTS TO 20 KT. SEAS 2 TO 3 FT.
WAVE DETAIL: S 3 FT AT 4 SECONDS AND SE 1 FOOT AT 8 SECONDS. A
CHANCE OF SHOWERS AND TSTMS AFTER MIDNIGHT.
SAT
SW WINDS 10 TO 15 KT. SEAS 2 TO 3 FT. WAVE DETAIL: SW 3 FT
AT 4 SECONDS AND SE 1 FOOT AT 8 SECONDS. A CHANCE OF SHOWERS AND
TSTMS, MAINLY IN THE MORNING.
SAT NIGHT
SW WINDS 15 KT WITH GUSTS TO 20 KT. SEAS 2 TO 3 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.
SUN 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 8 SECONDS. A SLIGHT CHANCE OF
SHOWERS AND TSTMS.
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 TO 15 KT. SEAS 2 TO 3 FT. A CHANCE OF
SHOWERS AND TSTMS.
WINDS AND SEAS HIGHER IN AND NEAR TSTMS.
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