376
FZUS52 KCHS 090940
CWFCHS

Coastal Waters Forecast
National Weather Service Charleston SC
540 AM EDT Thu Oct 9 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

AMZ300-092200-
540 AM EDT Thu Oct 9 2025

.Synopsis for the coastal waters of south coastal South Carolina
and north coastal Georgia...
A cold front will drop south through the area this morning with
inland high pressure prevailing into early next week. Low
pressure will develop off the Southeast U.S. coast this weekend.

$$

AMZ330-092200-
Charleston Harbor-
540 AM EDT Thu Oct 9 2025

...SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE SATURDAY NIGHT...

.TODAY...NE winds 15 to 20 kt with gusts to 30 kt. Waves 1 to
2 ft. A slight chance of tstms. A chance of showers until late
afternoon, then a slight chance of showers late.
.TONIGHT...NE winds 20 kt with gusts to 30 kt. Waves 1 to 2 ft. A
slight chance of showers in the evening, then a chance of showers
with a slight chance of tstms after midnight.
.FRI...NE winds 20 to 25 kt with gusts to 30 kt. Waves 2 to 3 ft.
A chance of showers and tstms.
.FRI NIGHT...NE winds 20 to 25 kt, diminishing to 15 to 20 kt
after midnight. Waves 2 to 3 ft. Showers likely with a slight
chance of tstms.
.SAT...N winds 15 to 20 kt, increasing to 20 to 25 kt in the
afternoon. Waves 2 to 3 ft. A slight chance of tstms in the
morning. A chance of showers.
.SAT NIGHT...N winds 15 to 20 kt with gusts to 30 kt. Waves 1 to
2 ft. A chance of showers, mainly in the evening.
.SUN...N winds 15 to 20 kt. Waves 1 to 2 ft.
.SUN NIGHT...N winds 10 to 15 kt.
.MON...NW winds 10 to 15 kt.
.MON NIGHT...NW winds 10 to 15 kt.

Winds and waves higher in and near tstms.

Unless otherwise noted, waves 1 foot or less.

Charleston Harbor water temperature 77 degrees.

$$

AMZ350-092200-
Waters from South Santee River to Edisto Beach SC out 20 NM-
540 AM EDT Thu Oct 9 2025

...SMALL CRAFT ADVISORY IN EFFECT UNTIL 2 PM EDT THIS AFTERNOON...
...GALE WARNING IN EFFECT FROM 2 PM EDT THIS AFTERNOON THROUGH
SATURDAY EVENING...

.TODAY...NE winds 25 to 30 kt. Seas 5 to 7 ft, building to 6 to
8 ft this afternoon. Wave Detail: NE 6 ft at 6 seconds, becoming
NE 8 ft at 7 seconds. A chance of showers. A chance of tstms
early this morning, then a slight chance of tstms late this
morning.
.TONIGHT...NE winds 25 to 30 kt with gusts to 40 kt. Seas 7 to
9 ft, building to 8 to 10 ft after midnight. Wave Detail: E 9 ft
at 8 seconds, becoming E 10 ft at 8 seconds. A slight chance of
showers in the evening, then a chance of showers and tstms after
midnight.
.FRI...NE winds 25 to 30 kt. Seas 9 to 11 ft. Wave Detail: E
11 ft at 9 seconds. A chance of tstms. A chance of showers in the
morning, then showers likely in the afternoon.
.FRI NIGHT...NE winds 25 to 30 kt. Seas 9 to 11 ft. Wave Detail:
E 11 ft at 9 seconds. Showers likely. A slight chance of tstms in
the evening, then a chance of tstms after midnight.
.SAT...NE winds 25 to 30 kt. Seas 7 to 9 ft. Wave Detail: E 9 ft
at 9 seconds. Showers likely with a slight chance of tstms in the
morning, then a chance of showers in the afternoon.
.SAT NIGHT...N winds 25 to 30 kt. Seas 8 to 10 ft. Wave Detail:
NE 9 ft at 9 seconds. A chance of showers, mainly in the evening.
.SUN...N winds 25 to 30 kt. Seas 6 to 8 ft.
.SUN NIGHT...N winds 15 to 20 kt. Seas 5 to 7 ft.
.MON...NW winds 15 to 20 kt. Seas 5 to 7 ft.
.MON NIGHT...NW winds 15 to 20 kt. Seas 4 to 5 ft.

Winds and seas higher in and near tstms.

$$

AMZ352-092200-
Waters from Edisto Beach SC to Savannah GA out 20 NM-
540 AM EDT Thu Oct 9 2025

...SMALL CRAFT ADVISORY IN EFFECT UNTIL 2 PM EDT THIS AFTERNOON...
...GALE WARNING IN EFFECT FROM 2 PM EDT THIS AFTERNOON THROUGH
SATURDAY EVENING...

.TODAY...NE winds 20 to 25 kt, increasing to 25 to 30 kt late.
Seas 4 to 6 ft, building to 6 to 8 ft this afternoon. Wave
Detail: E 6 ft at 8 seconds, becoming E 8 ft at 7 seconds. A
chance of showers. A chance of tstms early this morning, then a
slight chance of tstms late this morning.
.TONIGHT...NE winds 25 to 30 kt with gusts to 40 kt. Seas 7 to
9 ft, building to 8 to 10 ft after midnight. Wave Detail: E 9 ft
at 7 seconds, becoming E 9 ft at 8 seconds. A slight chance of
showers and tstms in the evening, then a chance of showers and
tstms after midnight.
.FRI...NE winds 30 kt with gusts to 40 kt. Seas 8 to 10 ft,
building to 9 to 11 ft in the afternoon. Wave Detail: E 10 ft at
8 seconds. Showers likely with a chance of tstms.
.FRI NIGHT...NE winds 25 to 30 kt. Seas 9 to 11 ft. Wave Detail:
E 11 ft at 9 seconds. Showers likely with a chance of tstms.
.SAT...N winds 25 to 30 kt. Seas 7 to 9 ft. Wave Detail: E 9 ft
at 9 seconds. A slight chance of tstms in the morning. A chance
of showers.
.SAT NIGHT...N winds 25 to 30 kt. Seas 7 to 9 ft. Wave Detail: E
9 ft at 9 seconds. A chance of showers, mainly in the evening.
.SUN...N winds 20 to 25 kt. Seas 6 to 8 ft.
.SUN NIGHT...N winds 15 kt. Seas 4 to 6 ft.
.MON...NW winds 10 to 15 kt. Seas 4 to 6 ft.
.MON NIGHT...NW winds 10 to 15 kt. Seas 4 to 5 ft.

Winds and seas higher in and near tstms.

$$

AMZ354-092200-
Waters from Savannah GA to Altamaha Sound GA out 20 NM, including
Grays Reef National Marine Sanctuary-
540 AM EDT Thu Oct 9 2025

...SMALL CRAFT ADVISORY IN EFFECT UNTIL 2 PM EDT THIS AFTERNOON...
...GALE WARNING IN EFFECT FROM 2 PM EDT THIS AFTERNOON THROUGH
SATURDAY EVENING...

.TODAY...NE winds 20 to 25 kt, increasing to 25 to 30 kt this
afternoon. Seas 4 to 6 ft, building to 5 to 7 ft this afternoon.
Wave Detail: NE 6 ft at 7 seconds, becoming NE 7 ft at 6 seconds.
A chance of showers. A slight chance of tstms this morning, then
a chance of tstms this afternoon.
.TONIGHT...NE winds 30 kt. Seas 7 to 9 ft. Wave Detail: NE 9 ft
at 7 seconds. A chance of showers and tstms.
.FRI...NE winds 30 kt. Seas 8 to 10 ft. Wave Detail: NE 10 ft at
8 seconds. A chance of tstms. Showers likely.
.FRI NIGHT...NE winds 25 to 30 kt. Seas 9 to 11 ft, subsiding to
8 to 10 ft after midnight. Wave Detail: E 11 ft at 8 seconds,
becoming E 10 ft at 9 seconds. Showers likely with a chance of
tstms.
.SAT...N winds 25 to 30 kt. Seas 7 to 9 ft. Wave Detail: NE 9 ft
at 9 seconds. A slight chance of tstms in the morning. A chance
of showers.
.SAT NIGHT...N winds 25 to 30 kt, diminishing to 20 to 25 kt
after midnight. Seas 7 to 9 ft. Wave Detail: NE 9 ft at
9 seconds. A chance of showers in the evening.
.SUN...N winds 20 to 25 kt. Seas 6 to 8 ft.
.SUN NIGHT...N winds 15 kt. Seas 5 to 6 ft.
.MON...NW winds 10 to 15 kt. Seas 4 to 6 ft.
.MON NIGHT...W winds 10 to 15 kt. Seas 4 to 5 ft.

Winds and seas higher in and near tstms.

$$

AMZ374-092200-
Waters from Savannah GA to Altamaha Sound GA from 20 to 60 NM-
540 AM EDT Thu Oct 9 2025

...SMALL CRAFT ADVISORY IN EFFECT UNTIL 2 PM EDT THIS AFTERNOON...
...GALE WARNING IN EFFECT FROM 2 PM EDT THIS AFTERNOON THROUGH
LATE SATURDAY NIGHT...

.TODAY...NE winds 20 to 25 kt, increasing to 25 to 30 kt late.
Seas 4 to 6 ft, building to 7 to 9 ft this afternoon. Wave
Detail: NE 6 ft at 7 seconds, becoming NE 9 ft at 7 seconds. A
chance of tstms. A chance of showers this morning, then showers
likely this afternoon.
.TONIGHT...NE winds 25 to 30 kt with gusts to 40 kt. Seas 9 to
11 ft, building to 10 to 11 ft after midnight. Wave Detail: NE
10 ft at 7 seconds, becoming NE 11 ft at 8 seconds. A chance of
showers and tstms in the evening, then showers likely with a
chance of tstms after midnight with vsby 1 to 3 NM.
.FRI...NE winds 25 to 30 kt. Seas 10 to 11 ft. Wave Detail: NE
11 ft at 9 seconds. Showers with a chance of tstms. Vsby 1 to
3 NM in the morning.
.FRI NIGHT...NE winds 25 to 30 kt. Seas 11 to 12 ft, subsiding to
10 to 11 ft after midnight. Wave Detail: NE 11 ft at 9 seconds.
Showers with a chance of tstms.
.SAT...NE winds 25 to 30 kt with gusts to 40 kt. Seas 10 to
11 ft, building to 10 to 12 ft in the afternoon. Wave Detail: NE
11 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.
.SAT NIGHT...N winds 25 to 30 kt with gusts to 40 kt. Seas 10 to
12 ft, subsiding to 9 to 12 ft after midnight. Wave Detail: NE
12 ft at 9 seconds, becoming NE 12 ft at 10 seconds. A chance of
showers with a slight chance of tstms in the evening, then a
slight chance of showers after midnight.
.SUN...N winds 20 to 25 kt. Seas 8 to 10 ft.
.SUN NIGHT...N winds 15 to 20 kt. Seas 7 to 9 ft.
.MON...NW winds 15 to 20 kt. Seas 6 to 8 ft.
.MON NIGHT...W winds 10 to 15 kt. Seas 5 to 7 ft.

Winds and seas higher in and near tstms.

$$