497
FZUS52 KCHS 120939
CWFCHS
COASTAL WATERS FORECAST
NATIONAL WEATHER SERVICE CHARLESTON SC
539 AM EDT SUN JUL 12 2026
SOUTH SANTEE RIVER SC TO ALTAMAHA SOUND GA OUT 60 NM, INCLUDING
CHARLESTON HARBOR AND GRAYS REEF NATIONAL MARINE SANCTUARY
AMZ300-122300-
539 AM EDT SUN JUL 12 2026
.SYNOPSIS FOR THE COASTAL WATERS OF SOUTH COASTAL SOUTH CAROLINA
AND NORTH COASTAL GEORGIA...
A COLD FRONT MAY PUSH SOUTH OVER THE AREA LATE THIS WEEKEND,
REMAINING IN THE VICINITY THROUGH EARLY NEXT WEEK.
AMZ340-122300-
CHARLESTON HARBOR-
539 AM EDT SUN JUL 12 2026
TODAY
W WINDS 5 TO 10 KT, BECOMING S 10 TO 15 KT LATE. A
CHANCE OF SHOWERS AND TSTMS THIS AFTERNOON.
TONIGHT
W WINDS 5 TO 10 KT. SHOWERS WITH TSTMS LIKELY IN THE
EVENING, THEN SHOWERS LIKELY WITH A CHANCE OF TSTMS AFTER
MIDNIGHT.
MON
W WINDS 5 KT, BECOMING S IN THE AFTERNOON. A SLIGHT CHANCE
OF SHOWERS IN THE MORNING, THEN A CHANCE OF SHOWERS AND TSTMS IN
THE AFTERNOON.
MON NIGHT
SW WINDS 5 TO 10 KT, BECOMING NW AFTER MIDNIGHT.
SHOWERS WITH TSTMS LIKELY IN THE EVENING, THEN SHOWERS WITH A
CHANCE OF TSTMS AFTER MIDNIGHT.
TUE
NW WINDS 5 KT, BECOMING S IN THE AFTERNOON. A CHANCE OF
SHOWERS AND TSTMS IN THE MORNING, THEN SHOWERS AND TSTMS LIKELY
IN THE AFTERNOON.
TUE NIGHT
W WINDS 5 KT. A CHANCE OF TSTMS. SHOWERS LIKELY,
MAINLY IN THE EVENING.
WED
W WINDS 5 TO 10 KT. A SLIGHT CHANCE OF SHOWERS AND TSTMS.
WED NIGHT
SW WINDS 5 TO 10 KT.
THU
W WINDS 5 TO 10 KT.
THU NIGHT
W WINDS 5 TO 10 KT.
WINDS AND WAVES HIGHER IN AND NEAR TSTMS.
UNLESS OTHERWISE NOTED, WAVES 1 FOOT OR LESS.
CHARLESTON HARBOR WATER TEMPERATURE 86 DEGREES.
AMZ360-122300-
COASTAL WATERS FROM SOUTH SANTEE RIVER TO EDISTO BEACH SC OUT
20 NM-
539 AM EDT SUN JUL 12 2026
TODAY
W WINDS 10 TO 15 KT WITH GUSTS TO 20 KT, BECOMING SW
WITH GUSTS TO 20 KT LATE. SEAS 3 TO 4 FT, SUBSIDING TO 2 TO 3 FT
THIS AFTERNOON. WAVE DETAIL: S 4 FT AT 7 SECONDS, BECOMING SW
3 FT AT 5 SECONDS AND SE 2 FT AT 8 SECONDS. A SLIGHT CHANCE OF
SHOWERS AND TSTMS LATE.
TONIGHT
SW WINDS 10 TO 15 KT WITH GUSTS TO 20 KT, BECOMING W
5 TO 10 KT AFTER MIDNIGHT. SEAS 2 TO 3 FT. WAVE DETAIL: SW 3 FT
AT 5 SECONDS AND SE 2 FT AT 9 SECONDS. SHOWERS AND TSTMS LIKELY,
MAINLY IN THE EVENING.
MON
W WINDS 5 TO 10 KT, BECOMING SW IN THE AFTERNOON. SEAS
2 TO 3 FT. WAVE DETAIL: SW 2 FT AT 5 SECONDS AND SE 2 FT AT
9 SECONDS. A SLIGHT CHANCE OF SHOWERS IN THE MORNING, THEN A
CHANCE OF SHOWERS AND TSTMS IN THE AFTERNOON.
MON NIGHT
SW WINDS 5 TO 10 KT, BECOMING NW AFTER MIDNIGHT.
SEAS 2 FT. WAVE DETAIL: SW 2 FT AT 5 SECONDS AND SE 2 FT AT
9 SECONDS. SHOWERS WITH A CHANCE OF TSTMS.
TUE
NW WINDS 5 KT, BECOMING W IN THE AFTERNOON. SEAS 2 FT.
WAVE DETAIL: S 2 FT AT 5 SECONDS AND SE 2 FT AT 9 SECONDS. A
CHANCE OF TSTMS. SHOWERS LIKELY, MAINLY IN THE MORNING.
TUE NIGHT
W WINDS 5 TO 10 KT. SEAS 2 FT. WAVE DETAIL: S 2 FT
AT 4 SECONDS AND SE 2 FT AT 9 SECONDS. A CHANCE OF SHOWERS AND
TSTMS.
WED
W WINDS 10 TO 15 KT. SEAS 2 TO 3 FT. A SLIGHT CHANCE OF
SHOWERS AND TSTMS.
WED NIGHT
SW WINDS 10 TO 15 KT. SEAS 2 TO 3 FT.
THU
W WINDS 10 TO 15 KT. SEAS 2 TO 3 FT.
THU NIGHT
SW WINDS 10 TO 15 KT. SEAS 2 TO 3 FT.
WINDS AND SEAS HIGHER IN AND NEAR TSTMS.
AMZ362-122300-
COASTAL WATERS FROM EDISTO BEACH SC TO SAVANNAH GA OUT 20 NM-
539 AM EDT SUN JUL 12 2026
TODAY
W WINDS 10 TO 15 KT WITH GUSTS TO 20 KT, BECOMING SW
5 TO 10 KT EARLY THIS AFTERNOON, THEN BECOMING S 10 TO 15 KT WITH
GUSTS TO 20 KT LATE. SEAS 3 TO 4 FT, SUBSIDING TO 2 TO 3 FT THIS
AFTERNOON. WAVE DETAIL: SW 3 FT AT 5 SECONDS AND SE 2 FT AT
8 SECONDS, BECOMING SW 2 FT AT 5 SECONDS AND SE 2 FT AT
8 SECONDS. A SLIGHT CHANCE OF SHOWERS AND TSTMS LATE.
TONIGHT
SW WINDS 10 TO 15 KT WITH GUSTS TO 20 KT, BECOMING W
AFTER MIDNIGHT. SEAS 2 TO 3 FT. WAVE DETAIL: S 3 FT AT 4 SECONDS
AND SE 2 FT AT 8 SECONDS. A CHANCE OF SHOWERS AND TSTMS.
MON
W WINDS 5 TO 10 KT, BECOMING SW IN THE AFTERNOON. SEAS
2 FT. WAVE DETAIL: SW 2 FT AT 5 SECONDS AND SE 2 FT AT 9 SECONDS.
A SLIGHT CHANCE OF SHOWERS IN THE MORNING, THEN A CHANCE OF
SHOWERS AND TSTMS IN THE AFTERNOON.
MON NIGHT
SW WINDS 5 TO 10 KT. SEAS 2 FT. WAVE DETAIL: S 2 FT
AT 4 SECONDS AND SE 2 FT AT 9 SECONDS. A CHANCE OF TSTMS.
SHOWERS.
TUE
W WINDS 5 TO 10 KT, BECOMING SW IN THE AFTERNOON. SEAS
2 FT. WAVE DETAIL: S 2 FT AT 4 SECONDS AND SE 1 FOOT AT
9 SECONDS. A CHANCE OF SHOWERS. A SLIGHT CHANCE OF TSTMS IN THE
MORNING, THEN A CHANCE OF TSTMS IN THE AFTERNOON.
TUE NIGHT
W WINDS 5 TO 10 KT. SEAS 2 FT. WAVE DETAIL: SE 2 FT
AT 9 SECONDS AND S 1 FOOT AT 4 SECONDS. SHOWERS LIKELY WITH A
CHANCE OF TSTMS.
WED
W WINDS 10 KT. SEAS 2 FT. A SLIGHT CHANCE OF SHOWERS AND
TSTMS.
WED NIGHT
SW WINDS 10 TO 15 KT. SEAS 2 TO 3 FT.
THU
W WINDS 10 TO 15 KT. SEAS 2 TO 3 FT.
THU NIGHT
W WINDS 10 TO 15 KT. SEAS 2 FT.
WINDS AND SEAS HIGHER IN AND NEAR TSTMS.
AMZ364-122300-
COASTAL WATERS FROM SAVANNAH GA TO ALTAMAHA SOUND GA OUT 20 NM,
INCLUDING GRAYS REEF NATIONAL MARINE SANCTUARY-
539 AM EDT SUN JUL 12 2026
TODAY
W WINDS 10 TO 15 KT, DIMINISHING TO 5 TO 10 KT LATE THIS
MORNING, THEN BECOMING SW EARLY THIS AFTERNOON, BECOMING S 10 TO
15 KT LATE. SEAS 2 TO 3 FT. WAVE DETAIL: SW 2 FT AT 5 SECONDS AND
SE 2 FT AT 8 SECONDS. A SLIGHT CHANCE OF SHOWERS AND TSTMS THIS
AFTERNOON.
TONIGHT
SW WINDS 10 TO 15 KT WITH GUSTS TO 20 KT, BECOMING W
AFTER MIDNIGHT. SEAS 2 TO 3 FT. WAVE DETAIL: S 2 FT AT 4 SECONDS
AND SE 1 FOOT AT 8 SECONDS. A CHANCE OF SHOWERS AND TSTMS, MAINLY
IN THE EVENING.
MON
W WINDS 5 TO 10 KT, BECOMING SW 10 TO 15 KT IN THE
AFTERNOON. SEAS 2 FT. WAVE DETAIL: SW 2 FT AT 5 SECONDS AND SE
1 FOOT AT 8 SECONDS. A CHANCE OF TSTMS WITH A SLIGHT CHANCE OF
SHOWERS IN THE AFTERNOON.
MON NIGHT
SW WINDS 10 KT. SEAS 2 FT. WAVE DETAIL: S 2 FT AT
4 SECONDS AND SE 1 FOOT AT 9 SECONDS. SHOWERS AND TSTMS LIKELY IN
THE EVENING, THEN SHOWERS WITH A SLIGHT CHANCE OF TSTMS AFTER
MIDNIGHT.
TUE
SW WINDS 5 TO 10 KT. SEAS 2 FT. WAVE DETAIL: SW 2 FT AT
4 SECONDS AND SE 1 FOOT AT 9 SECONDS. A CHANCE OF SHOWERS WITH A
SLIGHT CHANCE OF TSTMS IN THE MORNING, THEN SHOWERS LIKELY WITH A
CHANCE OF TSTMS IN THE AFTERNOON.
TUE NIGHT
W WINDS 5 TO 10 KT. SEAS 2 FT. WAVE DETAIL: SW
1 FOOT AT 4 SECONDS AND SE 1 FOOT AT 9 SECONDS. SHOWERS LIKELY
WITH A CHANCE OF TSTMS IN THE EVENING, THEN A CHANCE OF SHOWERS
WITH A SLIGHT CHANCE OF TSTMS AFTER MIDNIGHT.
WED
W WINDS 5 TO 10 KT. SEAS 2 FT. A SLIGHT CHANCE OF SHOWERS
AND TSTMS.
WED NIGHT
SW WINDS 10 TO 15 KT. SEAS 2 FT.
THU
W WINDS 10 TO 15 KT. SEAS 2 TO 3 FT. A SLIGHT CHANCE OF
SHOWERS AND TSTMS.
THU NIGHT
W WINDS 10 KT. SEAS 2 FT.
WINDS AND SEAS HIGHER IN AND NEAR TSTMS.
AMZ380-122300-
WATERS FROM SOUTH SANTEE RIVER SC TO EDISTO BEACH SC EXTENDING
FROM 20 TO 60 NM-
539 AM EDT SUN JUL 12 2026
TODAY
W WINDS 10 TO 15 KT WITH GUSTS TO 20 KT, BECOMING SW
WITH GUSTS TO 20 KT LATE. SEAS 4 TO 5 FT, SUBSIDING TO 3 TO 4 FT
THIS AFTERNOON. WAVE DETAIL: SW 4 FT AT 6 SECONDS AND SE 2 FT AT
8 SECONDS, BECOMING SW 3 FT AT 5 SECONDS AND SE 2 FT AT
8 SECONDS.
TONIGHT
SW WINDS 10 TO 15 KT WITH GUSTS TO 20 KT, BECOMING W
AFTER MIDNIGHT. SEAS 3 FT. WAVE DETAIL: SW 3 FT AT 5 SECONDS AND
SE 2 FT AT 9 SECONDS. A CHANCE OF SHOWERS AND TSTMS.
MON
W WINDS 5 TO 10 KT. SEAS 2 TO 3 FT. WAVE DETAIL: SW 2 FT
AT 5 SECONDS AND SE 2 FT AT 9 SECONDS. A SLIGHT CHANCE OF TSTMS.
A SLIGHT CHANCE OF SHOWERS IN THE MORNING, THEN A CHANCE OF
SHOWERS IN THE AFTERNOON.
MON NIGHT
W WINDS 5 TO 10 KT. SEAS 2 TO 3 FT. WAVE DETAIL: SW
2 FT AT 5 SECONDS AND SE 2 FT AT 9 SECONDS. SHOWERS WITH A CHANCE
OF TSTMS.
TUE
W WINDS 5 TO 10 KT. SEAS 2 TO 3 FT. WAVE DETAIL: SW 2 FT
AT 4 SECONDS AND SE 2 FT AT 9 SECONDS. A CHANCE OF SHOWERS AND
TSTMS.
TUE NIGHT
W WINDS 5 TO 10 KT. SEAS 2 TO 3 FT. WAVE DETAIL: E
3 FT AT 8 SECONDS AND SW 2 FT AT 4 SECONDS. A CHANCE OF SHOWERS
AND TSTMS.
WED
W WINDS 10 TO 15 KT. SEAS 3 FT.
WED NIGHT
SW WINDS 10 TO 15 KT. SEAS 3 FT. A SLIGHT CHANCE OF
SHOWERS AND TSTMS.
THU
W WINDS 10 TO 15 KT. SEAS 3 FT.
THU NIGHT
SW WINDS 10 TO 15 KT. SEAS 3 FT.
WINDS AND SEAS HIGHER IN AND NEAR TSTMS.
AMZ382-122300-
WATERS FROM EDISTO BEACH SC TO SAVANNAH GA EXTENDING FROM 20 TO
60 NM-
539 AM EDT SUN JUL 12 2026
TODAY
W WINDS 10 TO 15 KT WITH GUSTS TO 20 KT, BECOMING SW
WITH GUSTS TO 20 KT LATE. SEAS 3 TO 4 FT. WAVE DETAIL: SW 4 FT AT
5 SECONDS AND SE 2 FT AT 8 SECONDS.
TONIGHT
SW WINDS 15 KT, BECOMING W AFTER MIDNIGHT. SEAS 3 FT.
WAVE DETAIL: SW 3 FT AT 4 SECONDS AND SE 2 FT AT 9 SECONDS. A
CHANCE OF SHOWERS AND TSTMS.
MON
W WINDS 5 TO 10 KT. SEAS 2 TO 3 FT. WAVE DETAIL: SW 3 FT
AT 5 SECONDS AND SE 2 FT AT 9 SECONDS. A SLIGHT CHANCE OF TSTMS.
A SLIGHT CHANCE OF SHOWERS IN THE MORNING, THEN A CHANCE OF
SHOWERS IN THE AFTERNOON.
MON NIGHT
SW WINDS 10 KT. SEAS 2 TO 3 FT. WAVE DETAIL: SW 2 FT
AT 4 SECONDS AND SE 2 FT AT 9 SECONDS. SHOWERS WITH A CHANCE OF
TSTMS.
TUE
W WINDS 5 TO 10 KT. SEAS 2 TO 3 FT. WAVE DETAIL: SW 2 FT
AT 4 SECONDS AND SE 2 FT AT 9 SECONDS. SHOWERS LIKELY WITH A
CHANCE OF TSTMS IN THE MORNING, THEN A CHANCE OF SHOWERS WITH A
SLIGHT CHANCE OF TSTMS IN THE AFTERNOON.
TUE NIGHT
W WINDS 5 TO 10 KT. SEAS 2 TO 3 FT. WAVE DETAIL: SW
2 FT AT 4 SECONDS AND SE 2 FT AT 9 SECONDS. A CHANCE OF SHOWERS
AND TSTMS.
WED
W WINDS 10 TO 15 KT. SEAS 2 TO 3 FT.
WED NIGHT
SW WINDS 10 TO 15 KT. SEAS 3 FT. A SLIGHT CHANCE OF
SHOWERS AND TSTMS.
THU
W WINDS 10 TO 15 KT. SEAS 3 FT.
THU NIGHT
SW WINDS 10 TO 15 KT. SEAS 2 TO 3 FT. A SLIGHT
CHANCE OF SHOWERS AND TSTMS.
WINDS AND SEAS HIGHER IN AND NEAR TSTMS.
AMZ384-122300-
WATERS FROM SAVANNAH GA TO ALTAMAHA SOUND GA EXTENDING FROM 20 TO
60 NM-
539 AM EDT SUN JUL 12 2026
TODAY
W WINDS 10 TO 15 KT WITH GUSTS TO 20 KT, BECOMING SW
LATE. SEAS 3 TO 4 FT, SUBSIDING TO 2 TO 3 FT THIS AFTERNOON. WAVE
DETAIL: SW 3 FT AT 5 SECONDS AND SE 2 FT AT 8 SECONDS, BECOMING
SW 2 FT AT 4 SECONDS AND SE 2 FT AT 8 SECONDS.
TONIGHT
SW WINDS 15 KT, BECOMING W AFTER MIDNIGHT. SEAS 3 FT.
WAVE DETAIL: SW 3 FT AT 5 SECONDS AND SE 2 FT AT 8 SECONDS. A
CHANCE OF SHOWERS AND TSTMS, MAINLY IN THE EVENING.
MON
W WINDS 10 KT, BECOMING SW IN THE AFTERNOON. SEAS 2 TO
3 FT. WAVE DETAIL: SW 2 FT AT 5 SECONDS AND SE 2 FT AT 8 SECONDS.
A SLIGHT CHANCE OF SHOWERS AND TSTMS IN THE AFTERNOON.
MON NIGHT
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. A CHANCE OF TSTMS.
SHOWERS LIKELY, MAINLY IN THE EVENING.
TUE
W WINDS 5 TO 10 KT. SEAS 2 TO 3 FT. WAVE DETAIL: SW 2 FT
AT 4 SECONDS AND SE 2 FT AT 9 SECONDS. A CHANCE OF SHOWERS AND
TSTMS.
TUE NIGHT
W WINDS 5 TO 10 KT. SEAS 2 TO 3 FT. WAVE DETAIL: SW
2 FT AT 4 SECONDS AND SE 2 FT AT 9 SECONDS. A CHANCE OF SHOWERS
AND TSTMS.
WED
W WINDS 10 TO 15 KT. SEAS 2 TO 3 FT.
WED NIGHT
SW WINDS 10 TO 15 KT. SEAS 2 TO 3 FT.
THU
W WINDS 10 TO 15 KT. SEAS 2 TO 3 FT.
THU NIGHT
SW WINDS 10 TO 15 KT. SEAS 2 TO 3 FT. A SLIGHT
CHANCE OF SHOWERS AND TSTMS.
WINDS AND SEAS HIGHER IN AND NEAR TSTMS.
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