230
FZUS52 KCHS 081715
CWFCHS

Coastal Waters Forecast
National Weather Service Charleston SC
115 PM EDT Wed Oct 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

AMZ300-090615-
115 PM EDT Wed Oct 8 2025

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

$$

AMZ330-090615-
Charleston Harbor-
115 PM EDT Wed Oct 8 2025

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

.THIS AFTERNOON...SE winds 5 kt. A slight chance of showers and
tstms late.
.TONIGHT...E winds 5 kt, becoming NE 10 to 15 kt with gusts to
20 kt after midnight, then 15 to 20 kt with gusts to 25 kt late.
A chance of tstms. A chance of showers in the evening, then
showers likely after midnight.
.THU...NE winds 15 to 20 kt with gusts to 30 kt. Waves 1 to 2 ft.
A chance of showers and tstms in the morning, then a slight
chance of showers in the afternoon.
.THU NIGHT...NE winds 15 to 20 kt with gusts to 25 kt. Waves 1 to
2 ft. A chance of showers after midnight.
.FRI...NE winds 20 to 25 kt with gusts to 30 kt. Waves 2 to 3 ft.
A chance of showers in the morning, then a chance of showers with
a slight chance of tstms in the afternoon.
.FRI NIGHT...NE winds 20 to 25 kt with gusts to 30 kt. Waves 2 to
3 ft. A chance of showers with a slight chance of tstms.
.SAT...N winds 20 to 25 kt. Waves 2 to 3 ft. A chance of showers.
.SAT NIGHT...N winds 15 to 20 kt. Waves 1 to 2 ft. A chance of
showers.
.SUN...N winds 15 to 20 kt. Waves 1 to 2 ft. A slight chance of
showers.
.SUN NIGHT...N 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.

$$

AMZ350-090615-
Waters from South Santee River to Edisto Beach SC out 20 NM-
115 PM EDT Wed Oct 8 2025

...SMALL CRAFT ADVISORY IN EFFECT FROM LATE TONIGHT THROUGH
THURSDAY AFTERNOON...
...GALE WARNING IN EFFECT FROM THURSDAY AFTERNOON THROUGH
SATURDAY EVENING...

.THIS AFTERNOON...E winds 5 kt. Seas 3 to 4 ft. Wave Detail: SE
4 ft at 8 seconds.
.TONIGHT...E winds 5 kt, becoming NE 20 to 25 kt with gusts to
30 kt after midnight. Seas 3 to 4 ft, building to 4 to 5 ft after
midnight. Wave Detail: SE 4 ft at 8 seconds. A chance of tstms. A
chance of showers in the evening, then showers likely after
midnight.
.THU...NE winds 25 to 30 kt with gusts to 35 kt. Seas 5 to 7 ft,
building to 7 to 9 ft in the afternoon. Wave Detail: NE 7 ft at 6
seconds, becoming NE 8 ft at 7 seconds. A chance of showers and
tstms in the morning, then a slight chance of showers in the
afternoon.
.THU NIGHT...NE winds 25 to 30 kt with gusts to 35 kt. Seas 8 to
10 ft. Wave Detail:
E 10 ft at 8 seconds. A slight chance of showers in the evening,
then a chance of showers with a slight chance of tstms after
midnight.
.FRI...NE winds 25 to 30 kt with gusts to 35 kt. Seas 8 to 10 ft.
Wave Detail: E 10 ft 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.
.FRI NIGHT...NE winds 25 to 30 kt with gusts to 35 kt. Seas 9 to
10 ft, subsiding to 8 to 10 ft after midnight. Wave Detail: E 10
ft at 9 seconds. Showers likely with a chance of tstms.
.SAT...NE winds 25 to 30 kt. Seas 8 to 10 ft. A chance of
showers.
.SAT NIGHT...N winds 25 to 30 kt. Gusts to 35 kt early. Seas 7 to
9 ft. A chance of showers.
.SUN...N winds 25 to 30 kt. Seas 7 to 9 ft. A slight chance of
showers.
.SUN NIGHT...N winds 20 to 25 kt. Seas 5 to 7 ft.

Winds and seas higher in and near tstms.

$$

AMZ352-090615-
Waters from Edisto Beach SC to Savannah GA out 20 NM-
115 PM EDT Wed Oct 8 2025

...SMALL CRAFT ADVISORY IN EFFECT FROM LATE TONIGHT THROUGH
THURSDAY AFTERNOON...
...GALE WARNING IN EFFECT FROM THURSDAY AFTERNOON THROUGH
SATURDAY EVENING...

.THIS AFTERNOON...E winds 5 kt. Seas 3 to 4 ft. Wave Detail: SE
4 ft at 8 seconds.
.TONIGHT...E winds 5 kt, becoming NE 20 to 25 kt with gusts to
30 kt after midnight. Seas 3 to 4 ft. Wave Detail: SE 4 ft at
8 seconds. A chance of showers and tstms.
.THU...NE winds 25 to 30 kt with gusts to 35 kt. Seas 4 to 6 ft,
building to 6 to 8 ft in the afternoon. Wave Detail: NE 6 ft at 8
seconds, becoming E 8 ft at 7 seconds. A chance of showers. A
chance of tstms, mainly in the morning.
.THU NIGHT...NE winds 25 to 30 kt with gusts to 35 kt. Seas 7 to
9 ft, building to 8 to 10 ft after midnight. Wave Detail: E 9 ft
at 8 seconds. A chance of showers. A slight chance of tstms after
midnight.
.FRI...NE winds 25 to 30 kt with gusts to 35 kt. Seas 8 to 10 ft.
Wave Detail: E 10 ft at 9 seconds. A slight chance of tstms. A
chance of showers in the morning, then showers likely in the
afternoon.
.FRI NIGHT...NE winds 25 to 30 kt with gusts to 35 kt. Seas 8 to
10 ft. Wave Detail:
E 10 ft at 9 seconds. A slight chance of tstms. Showers likely,
mainly in the evening.
.SAT...N winds 25 to 30 kt with gusts to 35 kt. Seas 8 to 10 ft.
A chance of showers.
.SAT NIGHT...N winds 25 to 30 kt. Seas 7 to 9 ft. A slight chance
of showers.
.SUN...N winds 20 to 25 kt. Seas 6 to 8 ft.
.SUN NIGHT...N winds 15 to 20 kt. Seas 5 to 7 ft.

Winds and seas higher in and near tstms.

$$

AMZ354-090615-
Waters from Savannah GA to Altamaha Sound GA out 20 NM, including
Grays Reef National Marine Sanctuary-
115 PM EDT Wed Oct 8 2025

...SMALL CRAFT ADVISORY IN EFFECT FROM THURSDAY MORNING THROUGH
THURSDAY AFTERNOON...
...GALE WARNING IN EFFECT FROM THURSDAY AFTERNOON THROUGH
SATURDAY EVENING...

.THIS AFTERNOON...NE winds 5 to 10 kt. Seas 3 to 4 ft. Wave
Detail: E 4 ft at 8 seconds.
.TONIGHT...E winds 5 to 10 kt, becoming NE 15 to 20 kt with gusts
to 25 kt after midnight. Seas 3 ft. Wave Detail: E 3 ft at
8 seconds. A slight chance of showers and tstms.
.THU...NE winds 20 to 25 kt, increasing to 25 to 30 kt with gusts
to 35 kt in the afternoon. Seas 4 to 6 ft, building to 6 to 8 ft
in the afternoon. Wave Detail: NE 6 ft at 7 seconds, becoming NE 8
ft at 7 seconds. A chance of showers and tstms.
.THU NIGHT...NE winds 30 kt with gusts to 35 kt. Seas 7 to 9 ft,
building to 8 to 10 ft after midnight. Wave Detail: NE 9 ft at 7
seconds, becoming NE 9 ft at 8 seconds. A chance of showers with a
slight chance of tstms.
.FRI...NE winds 30 kt with gusts to 35 kt. Seas 8 to 10 ft. Wave
Detail: NE 10 ft at 8 seconds. A slight chance of tstms. A chance
of showers in the morning, then showers likely in the afternoon.
.FRI NIGHT...NE winds 30 kt with gusts to 35 kt. Seas 9 to 10 ft,
subsiding to 8 to 10 ft after midnight. Wave Detail: E 10 ft at 9
seconds. A slight chance of tstms. Showers likely, mainly in the
evening.
.SAT...N winds 25 to 30 kt with gusts to 35 kt. Seas 8 to 10 ft.
A chance of showers.
.SAT NIGHT...N winds 25 to 30 kt. Gusts to 35 kt early. Seas 7 to
9 ft. A slight chance of showers.
.SUN...N winds 20 to 25 kt. Seas 6 to 8 ft.
.SUN NIGHT...N winds 15 to 20 kt. Seas 5 to 7 ft.

Winds and seas higher in and near tstms.

$$

AMZ374-090615-
Waters from Savannah GA to Altamaha Sound GA from 20 to 60 NM-
115 PM EDT Wed Oct 8 2025

...SMALL CRAFT ADVISORY IN EFFECT FROM THURSDAY MORNING THROUGH
THURSDAY AFTERNOON...
...GALE WARNING IN EFFECT FROM THURSDAY AFTERNOON THROUGH LATE
SATURDAY NIGHT...

.THIS AFTERNOON...NE winds 5 to 10 kt. Seas 4 to 5 ft. Wave
Detail: E 4 ft at 8 seconds.
.TONIGHT...E winds 5 to 10 kt, becoming NE 15 to 20 kt with gusts
to 25 kt after midnight. Seas 3 to 4 ft. Wave Detail: E 4 ft at
8 seconds. A chance of tstms with a slight chance of showers
after midnight.
.THU...NE winds 20 to 25 kt, increasing to 25 to 30 kt with gusts
to 35 kt in the afternoon. Seas 5 to 7 ft, building to 8 to 10 ft
in the afternoon. Wave Detail: NE 7 ft at 7 seconds, becoming NE
9 ft at 7 seconds. A chance of tstms. A chance of showers in the
morning, then showers likely in the afternoon.
.THU NIGHT...NE winds 30 kt with gusts to 40 kt. Seas 9 to 11 ft,
building to 10 to 11 ft after midnight. Wave Detail: NE 11 ft at
8 seconds. Showers likely with a chance of tstms. Vsby 1 to 3 NM
after midnight.
.FRI...NE winds 25 to 30 kt with gusts to 35 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 with gusts to 35 kt. Seas 10 to
12 ft, building to 11 to 12 ft after midnight. Wave Detail: NE 12
ft at 9 seconds. A chance of tstms. Showers.
.SAT...N winds 30 kt with gusts to 35 kt. Seas 10 to 12 ft. A
chance of showers with a slight chance of tstms.
.SAT NIGHT...N winds 25 to 30 kt with gusts to 35 kt. Seas 9 to
12 ft. A chance of showers.
.SUN...N winds 20 to 25 kt. Seas 8 to 10 ft. A slight chance of
showers.
.SUN NIGHT...N winds 15 to 20 kt. Seas 7 to 9 ft.

Winds and seas higher in and near tstms.

$$