903
FZUS52 KCHS 110939
CWFCHS
COASTAL WATERS FORECAST
NATIONAL WEATHER SERVICE CHARLESTON SC
539 AM EDT TUE AUG 11 2026
SOUTH SANTEE RIVER SC TO ALTAMAHA SOUND GA OUT 60 NM, INCLUDING
CHARLESTON HARBOR AND GRAYS REEF NATIONAL MARINE SANCTUARY
AMZ300-112300-
539 AM EDT TUE AUG 11 2026
.SYNOPSIS FOR THE COASTAL WATERS OF SOUTH COASTAL SOUTH CAROLINA
AND NORTH COASTAL GEORGIA...
TYPICAL SUMMERTIME SHOWERS AND THUNDERSTORMS ARE EXPECTED THIS
AFTERNOON AND EVENING. A STRONG RIDGE OF HIGH PRESSURE OVER THE
DEEP SOUTH WILL SUPPLY THE REGION WITH A VERY HOT AND HUMID AIR
MASS FOR MUCH OF THIS WEEK. A COLD FRONT IS EXPECTED TO IMPACT
THE SOUTH CAROLINA LOWCOUNTRY AND SOUTHEAST GEORGIA BY LATE THIS
WEEKEND.
AMZ340-112300-
CHARLESTON HARBOR-
539 AM EDT TUE AUG 11 2026
TODAY
SW WINDS 5 TO 10 KT. A SLIGHT CHANCE OF SHOWERS AND
TSTMS LATE.
TONIGHT
SW WINDS 5 TO 10 KT. A SLIGHT CHANCE OF SHOWERS AND
TSTMS IN THE EVENING.
WED
W WINDS 10 KT.
WED NIGHT
SW WINDS 5 TO 10 KT. A CHANCE OF SHOWERS AND TSTMS
AFTER MIDNIGHT.
THU
SW WINDS 5 TO 10 KT.
THU NIGHT
SW WINDS 5 TO 10 KT.
FRI
SW WINDS 10 TO 15 KT.
FRI NIGHT
SW WINDS 10 TO 15 KT. A CHANCE OF SHOWERS AND TSTMS.
SAT
SW WINDS 5 TO 10 KT. A CHANCE OF SHOWERS AND TSTMS.
SAT NIGHT
SE 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.
AMZ360-112300-
COASTAL WATERS FROM SOUTH SANTEE RIVER TO EDISTO BEACH SC OUT
20 NM-
539 AM EDT TUE AUG 11 2026
TODAY
SW WINDS 10 TO 15 KT. SEAS 2 TO 3 FT. WAVE DETAIL: SW
2 FT AT 4 SECONDS AND SE 1 FOOT AT 7 SECONDS.
TONIGHT
SW WINDS 10 TO 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
7 SECONDS. A SLIGHT CHANCE OF SHOWERS AND TSTMS IN THE EVENING.
WED
W WINDS 10 TO 15 KT, BECOMING SW IN THE AFTERNOON. SEAS
2 TO 3 FT. WAVE DETAIL: SW 2 FT AT 5 SECONDS AND SE 1 FOOT AT
8 SECONDS.
WED NIGHT
SW WINDS 10 TO 15 KT. SEAS 2 TO 3 FT. WAVE DETAIL:
SW 3 FT AT 5 SECONDS AND SE 1 FOOT AT 8 SECONDS. A CHANCE OF
SHOWERS AND TSTMS AFTER MIDNIGHT.
THU
W WINDS 5 TO 10 KT, BECOMING SW 10 TO 15 KT WITH GUSTS TO
20 KT IN THE AFTERNOON. SEAS 2 FT. WAVE DETAIL: SW 2 FT AT
5 SECONDS AND SE 1 FOOT AT 8 SECONDS.
THU NIGHT
SW WINDS 10 TO 15 KT. SEAS 2 TO 3 FT. WAVE DETAIL:
SW 3 FT AT 5 SECONDS AND SE 1 FOOT AT 8 SECONDS.
FRI
SW WINDS 10 TO 15 KT. SEAS 2 TO 3 FT.
FRI NIGHT
SW WINDS 10 TO 15 KT. SEAS 3 FT. A CHANCE OF SHOWERS
AND TSTMS.
SAT
SW WINDS 5 TO 10 KT. SEAS 2 TO 3 FT. A CHANCE OF SHOWERS
AND TSTMS.
SAT NIGHT
SE WINDS 5 TO 10 KT. SEAS 2 FT. A CHANCE OF SHOWERS
AND TSTMS.
WINDS AND SEAS HIGHER IN AND NEAR TSTMS.
AMZ362-112300-
COASTAL WATERS FROM EDISTO BEACH SC TO SAVANNAH GA OUT 20 NM-
539 AM EDT TUE AUG 11 2026
TODAY
SW WINDS 10 TO 15 KT. SEAS 2 TO 3 FT. WAVE DETAIL: SW
2 FT AT 4 SECONDS AND SE 2 FT AT 7 SECONDS. A SLIGHT CHANCE OF
SHOWERS AND TSTMS EARLY THIS AFTERNOON. A CHANCE OF SHOWERS AND
TSTMS LATE.
TONIGHT
SW WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. SEAS 2 TO
3 FT. WAVE DETAIL: SW 2 FT AT 4 SECONDS AND SE 2 FT AT 7 SECONDS.
A SLIGHT CHANCE OF SHOWERS AND TSTMS IN THE EVENING.
WED
W WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. SEAS 2 TO 3 FT.
WAVE DETAIL: W 2 FT AT 4 SECONDS AND SE 1 FOOT AT 8 SECONDS.
WED NIGHT
SW WINDS 10 TO 15 KT. SEAS 2 TO 3 FT. WAVE DETAIL:
SW 2 FT AT 4 SECONDS AND SE 1 FOOT AT 8 SECONDS. A CHANCE OF
SHOWERS AND TSTMS AFTER MIDNIGHT.
THU
SW WINDS 10 TO 15 KT. SEAS 2 FT. WAVE DETAIL: SW 2 FT AT
4 SECONDS AND SE 1 FOOT AT 8 SECONDS.
THU NIGHT
SW WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. SEAS 2 FT.
WAVE DETAIL: S 2 FT AT 4 SECONDS AND SE 1 FOOT AT 8 SECONDS.
FRI
SW WINDS 10 TO 15 KT. SEAS 2 FT.
FRI NIGHT
SW WINDS 10 TO 15 KT. SEAS 2 TO 3 FT. A SLIGHT
CHANCE OF SHOWERS AND TSTMS.
SAT
SW WINDS 5 TO 10 KT. SEAS 2 TO 3 FT. A SLIGHT CHANCE OF
SHOWERS AND TSTMS.
SAT NIGHT
S WINDS 5 TO 10 KT. SEAS 2 FT. A CHANCE OF SHOWERS
AND TSTMS.
WINDS AND SEAS HIGHER IN AND NEAR TSTMS.
AMZ364-112300-
COASTAL WATERS FROM SAVANNAH GA TO ALTAMAHA SOUND GA OUT 20 NM,
INCLUDING GRAYS REEF NATIONAL MARINE SANCTUARY-
539 AM EDT TUE AUG 11 2026
TODAY
SW WINDS 5 TO 10 KT. SEAS 2 FT. WAVE DETAIL: SE 2 FT AT
7 SECONDS AND SW 1 FOOT AT 4 SECONDS. A SLIGHT CHANCE OF SHOWERS
AND TSTMS EARLY THIS AFTERNOON. A CHANCE OF SHOWERS AND TSTMS
LATE.
TONIGHT
SW WINDS 10 TO 15 KT. SEAS 2 FT. WAVE DETAIL: S 2 FT
AT 3 SECONDS AND SE 2 FT AT 7 SECONDS. A CHANCE OF SHOWERS AND
TSTMS IN THE EVENING.
WED
W WINDS 10 TO 15 KT, BECOMING SW 5 TO 10 KT IN THE
AFTERNOON. SEAS 2 FT. WAVE DETAIL: W 2 FT AT 4 SECONDS AND SE
1 FOOT AT 7 SECONDS.
WED NIGHT
SW WINDS 10 TO 15 KT. SEAS 2 FT. WAVE DETAIL: S 2 FT
AT 4 SECONDS AND SE 1 FOOT AT 7 SECONDS. A SLIGHT CHANCE OF
SHOWERS AND TSTMS.
THU
W WINDS 10 TO 15 KT, BECOMING SW 5 TO 10 KT IN THE
AFTERNOON. SEAS 2 FT. WAVE DETAIL: SW 2 FT AT 4 SECONDS AND SE
1 FOOT AT 7 SECONDS.
THU NIGHT
SW WINDS 10 TO 15 KT. SEAS 2 FT. WAVE DETAIL: S 2 FT
AT 4 SECONDS AND SE 1 FOOT AT 7 SECONDS.
FRI
SW WINDS 10 TO 15 KT. SEAS 2 FT.
FRI NIGHT
SW WINDS 10 TO 15 KT. SEAS 2 TO 3 FT.
SAT
SW WINDS 5 TO 10 KT. SEAS 2 FT. A SLIGHT CHANCE OF SHOWERS
AND TSTMS.
SAT NIGHT
S WINDS 5 TO 10 KT. SEAS 2 FT. A CHANCE OF SHOWERS
AND TSTMS.
WINDS AND SEAS HIGHER IN AND NEAR TSTMS.
AMZ380-112300-
WATERS FROM SOUTH SANTEE RIVER SC TO EDISTO BEACH SC EXTENDING
FROM 20 TO 60 NM-
539 AM EDT TUE AUG 11 2026
TODAY
SW WINDS 10 TO 15 KT. SEAS 3 FT. WAVE DETAIL: SW 3 FT AT
4 SECONDS AND SE 2 FT AT 7 SECONDS. A SLIGHT CHANCE OF SHOWERS
AND TSTMS THIS MORNING.
TONIGHT
SW WINDS 15 KT WITH GUSTS TO 20 KT. SEAS 3 FT. WAVE
DETAIL: SW 3 FT AT 4 SECONDS AND SE 1 FOOT AT 8 SECONDS. A SLIGHT
CHANCE OF SHOWERS AND TSTMS.
WED
W WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. SEAS 3 FT. WAVE
DETAIL: W 3 FT AT 5 SECONDS AND SE 1 FOOT AT 8 SECONDS.
WED NIGHT
SW WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. SEAS 3 FT.
WAVE DETAIL: SW 3 FT AT 5 SECONDS AND SE 1 FOOT AT 8 SECONDS. A
CHANCE OF SHOWERS AND TSTMS AFTER MIDNIGHT.
THU
SW WINDS 10 TO 15 KT. SEAS 2 TO 3 FT. WAVE DETAIL: SW 3 FT
AT 5 SECONDS AND SE 1 FOOT AT 8 SECONDS.
THU NIGHT
SW WINDS 10 TO 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
8 SECONDS.
FRI
SW WINDS 10 TO 15 KT. SEAS 3 FT.
FRI NIGHT
SW WINDS 15 KT. SEAS 3 FT. A CHANCE OF SHOWERS AND
TSTMS.
SAT
SW WINDS 10 TO 15 KT. SEAS 2 TO 3 FT. A SLIGHT CHANCE OF
SHOWERS AND TSTMS.
SAT NIGHT
SE WINDS 5 TO 10 KT. SEAS 2 TO 3 FT. A CHANCE OF
SHOWERS AND TSTMS.
WINDS AND SEAS HIGHER IN AND NEAR TSTMS.
AMZ382-112300-
WATERS FROM EDISTO BEACH SC TO SAVANNAH GA EXTENDING FROM 20 TO
60 NM-
539 AM EDT TUE AUG 11 2026
TODAY
SW WINDS 10 TO 15 KT. SEAS 2 TO 3 FT. WAVE DETAIL: SW
2 FT AT 4 SECONDS AND SE 2 FT AT 7 SECONDS. A SLIGHT CHANCE OF
SHOWERS AND TSTMS LATE.
TONIGHT
SW WINDS 15 KT WITH GUSTS TO 20 KT. SEAS 2 TO 3 FT.
WAVE DETAIL: SW 3 FT AT 4 SECONDS AND SE 2 FT AT 7 SECONDS. A
SLIGHT CHANCE OF SHOWERS AND TSTMS.
WED
W WINDS 10 TO 15 KT. SEAS 2 TO 3 FT. WAVE DETAIL: W 3 FT
AT 4 SECONDS AND SE 2 FT AT 8 SECONDS.
WED NIGHT
SW WINDS 10 TO 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
8 SECONDS. A CHANCE OF SHOWERS AND TSTMS AFTER MIDNIGHT.
THU
W WINDS 10 TO 15 KT. SEAS 2 TO 3 FT. WAVE DETAIL: SW 2 FT
AT 4 SECONDS AND SE 1 FOOT AT 8 SECONDS. A CHANCE OF SHOWERS AND
TSTMS IN THE MORNING.
THU NIGHT
SW WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. SEAS 2 TO
3 FT. WAVE DETAIL: SW 2 FT AT 4 SECONDS AND SE 1 FOOT AT
8 SECONDS.
FRI
SW WINDS 10 TO 15 KT. SEAS 2 TO 3 FT.
FRI NIGHT
SW WINDS 15 KT. SEAS 2 TO 3 FT. A SLIGHT CHANCE OF
SHOWERS AND TSTMS.
SAT
SW WINDS 10 TO 15 KT. SEAS 2 TO 3 FT. A SLIGHT CHANCE OF
SHOWERS AND TSTMS.
SAT NIGHT
SW WINDS 10 KT. SEAS 2 FT. A CHANCE OF SHOWERS AND
TSTMS.
WINDS AND SEAS HIGHER IN AND NEAR TSTMS.
AMZ384-112300-
WATERS FROM SAVANNAH GA TO ALTAMAHA SOUND GA EXTENDING FROM 20 TO
60 NM-
539 AM EDT TUE AUG 11 2026
TODAY
SW WINDS 10 TO 15 KT. SEAS 2 TO 3 FT. WAVE DETAIL: SW
2 FT AT 4 SECONDS AND SE 2 FT AT 7 SECONDS. A SLIGHT CHANCE OF
SHOWERS AND TSTMS LATE.
TONIGHT
SW WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. SEAS 2 TO
3 FT. WAVE DETAIL: SW 2 FT AT 3 SECONDS AND SE 2 FT AT 7 SECONDS.
A SLIGHT CHANCE OF SHOWERS AND TSTMS.
WED
W WINDS 10 TO 15 KT. SEAS 2 TO 3 FT. WAVE DETAIL: W 2 FT
AT 4 SECONDS AND SE 1 FOOT AT 8 SECONDS.
WED NIGHT
SW WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. SEAS 2 TO
3 FT. WAVE DETAIL: SW 2 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.
THU
W WINDS 10 TO 15 KT WITH GUSTS TO 20 KT, BECOMING SW 5 TO
10 KT IN THE AFTERNOON. SEAS 2 TO 3 FT. WAVE DETAIL: SW 2 FT AT
4 SECONDS AND SE 1 FOOT AT 8 SECONDS. A CHANCE OF SHOWERS AND
TSTMS IN THE MORNING.
THU NIGHT
SW WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. SEAS 2 TO
3 FT. WAVE DETAIL: S 2 FT AT 4 SECONDS AND SE 1 FOOT AT
8 SECONDS.
FRI
SW WINDS 10 TO 15 KT. SEAS 2 TO 3 FT.
FRI NIGHT
SW WINDS 10 TO 15 KT. SEAS 2 TO 3 FT.
SAT
SW WINDS 10 TO 15 KT. SEAS 2 TO 3 FT. A SLIGHT CHANCE OF
SHOWERS AND TSTMS.
SAT NIGHT
S WINDS 5 TO 10 KT. SEAS 2 FT. A CHANCE OF SHOWERS
AND TSTMS.
WINDS AND SEAS HIGHER IN AND NEAR TSTMS.
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