Coastal Waters Forecast
Issued by NWS Charleston, SC

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FZUS52 KCHS 082341
CWFCHS

Coastal Waters Forecast
National Weather Service Charleston SC
741 PM EDT Fri Aug 8 2025

South Santee River SC to Savannah GA out 20 NM and Savannah GA to
Altamaha Sound GA out 60 NM, including Charleston Harbor and
Grays Reef National Marine Sanctuary

AMZ300-091200-
741 PM EDT Fri Aug 8 2025

.Synopsis for the coastal waters of south coastal South Carolina
and north coastal Georgia...
A front will linger south of the area this weekend, while high
pressure remains centered well to the north.

$$

AMZ330-091200-
Charleston Harbor-
741 PM EDT Fri Aug 8 2025

.TONIGHT...NE winds 5 to 10 kt. A chance of showers and tstms.
.SAT...NE winds 10 to 15 kt. Showers and tstms.
.SAT NIGHT...E winds 5 to 10 kt. A chance of tstms. A chance of
showers in the evening, then showers likely after midnight.
.SUN...E winds 5 to 10 kt. Tstms likely. Showers.
.SUN NIGHT...E winds 5 to 10 kt. Showers with tstms likely in the
evening, then showers likely with a chance of tstms after
midnight.
.MON...E winds 5 to 10 kt. Showers. A chance of tstms in the
morning, then tstms likely in the afternoon.
.MON NIGHT...SE winds 5 to 10 kt. A chance of tstms. Showers.
.TUE...E winds 5 to 10 kt. Showers likely with a chance of tstms.
.TUE NIGHT...S winds 5 kt. A chance of showers and tstms.
.WED...SW winds 5 to 10 kt. A chance of showers and tstms.
.WED 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 84 degrees.

$$

AMZ350-091200-
Waters from South Santee River to Edisto Beach SC out 20 NM-
741 PM EDT Fri Aug 8 2025

.TONIGHT...NE winds 10 to 15 kt with gusts to 20 kt. Seas 3 ft.
Wave Detail: NE 3 ft at 5 seconds and E 2 ft at 8 seconds. A
chance of showers and tstms until early morning, then showers and
tstms likely late.
.SAT...NE winds 10 to 15 kt. Seas 3 ft. Wave Detail: NE 3 ft at
5 seconds and E 2 ft at 8 seconds. Showers and tstms likely.
.SAT NIGHT...E winds 10 to 15 kt. Seas 2 to 3 ft. Wave Detail: SE
3 ft at 5 seconds and E 2 ft at 9 seconds. A chance of tstms.
Showers.
.SUN...E winds 10 to 15 kt. Seas 2 to 3 ft. Wave Detail: SE 2 ft
at 5 seconds and E 2 ft at 8 seconds. Showers with tstms likely.
.SUN NIGHT...E winds 10 to 15 kt, diminishing to 5 to 10 kt after
midnight. Seas 2 to 3 ft. Wave Detail: E 3 ft at 6 seconds.
Showers and tstms likely in the evening, then showers with a
chance of tstms after midnight.
.MON...E winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: E 2 ft at
6 seconds. Showers with a chance of tstms.
.MON NIGHT...SE winds 5 to 10 kt. Seas 2 to 3 ft. Showers likely
with a chance of tstms.
.TUE...E winds 5 to 10 kt. Seas 2 to 3 ft. Showers likely with a
chance of tstms.
.TUE NIGHT...S winds 5 to 10 kt. Seas 2 to 3 ft. A chance of
showers and tstms.
.WED...SW winds 5 to 10 kt. Seas 2 ft. Showers likely with a
chance of tstms.
.WED NIGHT...SW winds 5 to 10 kt. Seas 2 ft. A chance of showers
and tstms.

Winds and seas higher in and near tstms.

$$

AMZ352-091200-
Waters from Edisto Beach SC to Savannah GA out 20 NM-
741 PM EDT Fri Aug 8 2025

.TONIGHT...E winds 10 to 15 kt. Seas 2 to 3 ft. Wave Detail: E
3 ft at 5 seconds and SE 1 foot at 8 seconds. A chance of showers
and tstms this evening, then showers and tstms likely after
midnight.
.SAT...NE winds 10 to 15 kt. Seas 2 to 3 ft. Wave Detail: E 3 ft
at 5 seconds and E 1 foot at 8 seconds. Showers with tstms
likely.
.SAT NIGHT...E winds 10 to 15 kt. Seas 2 to 3 ft. Wave Detail: E
3 ft at 5 seconds and E 1 foot at 8 seconds. Tstms likely.
Showers.
.SUN...E winds 10 kt. Seas 2 to 3 ft. Wave Detail: E 2 ft at
5 seconds and E 1 foot at 8 seconds. Tstms likely. Showers.
.SUN NIGHT...E winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: SE
2 ft at 5 seconds and E 2 ft at 8 seconds. Tstms likely. Showers.
.MON...E winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: SE 2 ft
at 5 seconds and E 2 ft at 8 seconds. Showers. Tstms likely,
mainly in the morning.
.MON NIGHT...SE winds 5 to 10 kt. Seas 2 to 3 ft. A chance of
tstms. A chance of showers in the evening, then showers likely
after midnight.
.TUE...E winds 5 to 10 kt. Seas 2 ft. Showers with a chance of
tstms.
.TUE NIGHT...S winds 5 to 10 kt. Seas 2 ft. Showers likely with a
chance of tstms.
.WED...SW winds 5 to 10 kt. Seas 2 ft. Showers likely with a
chance of tstms.
.WED NIGHT...S winds 5 to 10 kt. Seas 2 ft. A chance of showers
and tstms.

Winds and seas higher in and near tstms.

$$

AMZ354-091200-
Waters from Savannah GA to Altamaha Sound GA out 20 NM, including
Grays Reef National Marine Sanctuary-
741 PM EDT Fri Aug 8 2025

.TONIGHT...E winds 10 to 15 kt. Seas 2 to 3 ft. Wave Detail: E
3 ft at 6 seconds. A chance of showers and tstms this evening,
then showers and tstms likely after midnight.
.SAT...E winds 10 to 15 kt. Seas 2 to 3 ft. Wave Detail: E 2 ft
at 5 seconds and E 1 foot at 8 seconds. Showers and tstms.
.SAT NIGHT...E winds 10 to 15 kt. Seas 2 to 3 ft. Wave Detail: E
3 ft at 5 seconds and E 1 foot at 8 seconds. Tstms likely.
Showers.
.SUN...E winds 10 to 15 kt. Seas 2 to 3 ft. Wave Detail: E 2 ft
at 6 seconds. Showers with tstms likely.
.SUN NIGHT...SE winds 10 kt. Seas 2 to 3 ft. Wave Detail: SE 2 ft
at 5 seconds and E 2 ft at 8 seconds. Showers and tstms likely in
the evening, then showers with a chance of tstms after midnight.
.MON...E winds 10 kt. Seas 2 to 3 ft. Wave Detail: SE 2 ft at
5 seconds and E 2 ft at 8 seconds. Showers with a chance of tstms
in the morning, then showers with tstms likely in the afternoon.
.MON NIGHT...SE winds 5 to 10 kt. Seas 2 to 3 ft. Showers likely.
Tstms likely, mainly in the evening.
.TUE...E winds 5 to 10 kt. Seas 2 ft. Showers likely with a
chance of tstms.
.TUE NIGHT...S winds 5 to 10 kt. Seas 2 ft. A chance of showers
and tstms.
.WED...SW winds 5 to 10 kt. Seas 2 ft. Showers likely with a
chance of tstms.
.WED NIGHT...S winds 5 to 10 kt. Seas 2 ft. A chance of showers
and tstms.

Winds and seas higher in and near tstms.

$$

AMZ374-091200-
Waters from Savannah GA to Altamaha Sound GA from 20 to 60 NM-
741 PM EDT Fri Aug 8 2025

.TONIGHT...E winds 10 to 15 kt. Seas 3 ft. Wave Detail: NE 3 ft
at 8 seconds and SE 1 foot at 8 seconds. A chance of showers and
tstms early this evening, then showers and tstms late this
evening.
.SAT...E winds 10 to 15 kt. Seas 3 ft. Wave Detail: E 3 ft at
8 seconds and SE 1 foot at 8 seconds. Showers, tstms.
.SAT NIGHT...E winds 10 kt. Seas 3 ft. Wave Detail: E 3 ft at
8 seconds and SE 2 ft at 4 seconds. Tstms likely. Showers.
.SUN...E winds 10 kt. Seas 3 ft. Wave Detail: SE 2 ft at
5 seconds and NE 2 ft at 9 seconds. Tstms likely. Showers.
.SUN NIGHT...SE winds 10 kt. Seas 3 ft. Wave Detail: SE 2 ft at
5 seconds and E 2 ft at 8 seconds. Tstms likely. Showers.
.MON...SE winds 10 kt. Seas 3 ft. Wave Detail: E 2 ft at
7 seconds. Showers with tstms likely in the morning, then showers
with a chance of tstms in the afternoon.
.MON NIGHT...SE winds 5 to 10 kt. Seas 3 ft. A chance of tstms.
Showers.
.TUE...SE winds 5 to 10 kt. Seas 2 to 3 ft. Showers likely with a
chance of tstms.
.TUE NIGHT...S winds 5 to 10 kt. Seas 2 to 3 ft. Showers likely
with a chance of tstms.
.WED...SW winds 5 to 10 kt. Seas 2 to 3 ft. Showers likely with a
chance of tstms.
.WED NIGHT...S winds 5 to 10 kt. Seas 2 ft. A chance of showers
and tstms.

Winds and seas higher in and near tstms.

$$