790
FZUS52 KCHS 080940
CWFCHS

Coastal Waters Forecast
National Weather Service Charleston SC
540 AM 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

AMZ300-082200-
540 AM EDT Wed Oct 8 2025

.Synopsis for the coastal waters of south coastal South Carolina
and north coastal Georgia...
High pressure will persist across the region today. 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.

$$

AMZ330-082200-
Charleston Harbor-
540 AM EDT Wed Oct 8 2025

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

.TODAY...Light and variable winds, becoming SE 5 kt this
afternoon. Patchy fog early this morning with vsby 1 to 3 NM.
.TONIGHT...E winds 5 kt, becoming NE 10 to 15 kt with gusts to
20 kt after midnight. A chance of showers and tstms.
.THU...NE winds 15 to 20 kt with gusts to 30 kt. Waves 1 to 2 ft.
A slight chance of showers.
.THU NIGHT...NE winds 20 kt with gusts to 30 kt. Waves 1 to 2 ft.
A slight 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. A slight chance of tstms in the afternoon.
.FRI NIGHT...NE winds 20 to 25 kt, diminishing to 15 to 20 kt
after midnight. Waves 2 to 3 ft. A chance of showers with a
slight chance of tstms.
.SAT...N winds 20 kt. Waves 1 to 2 ft. A chance of showers.
.SAT NIGHT...N winds 15 to 20 kt. Waves 1 to 2 ft. A slight
chance of showers.
.SUN...N winds 15 to 20 kt. Waves 1 to 2 ft.
.SUN NIGHT...N winds 15 to 20 kt. Waves 1 to 2 ft.

Winds and waves higher in and near tstms.

Unless otherwise noted, waves 1 foot or less.

Charleston Harbor water temperature 76 degrees.

$$

AMZ350-082200-
Waters from South Santee River to Edisto Beach SC out 20 NM-
540 AM EDT Wed Oct 8 2025

...SMALL CRAFT ADVISORY IN EFFECT FROM LATE TONIGHT THROUGH
THURSDAY AFTERNOON...
...GALE WATCH IN EFFECT FROM THURSDAY AFTERNOON THROUGH LATE
SATURDAY NIGHT...

.TODAY...N winds 5 kt, becoming E this afternoon. Seas 3 to 4 ft.
Wave Detail: SE 4 ft at 8 seconds.
.TONIGHT...E winds 5 kt, becoming NE 15 to 20 kt with gusts to
25 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. Seas 5 to 7 ft, building to 6 to
8 ft in the afternoon. Wave Detail: NE 6 ft at 5 seconds and SE
4 ft at 8 seconds, becoming E 6 ft at 7 seconds. A chance of
showers with a slight chance of tstms in the morning, then a
slight chance of showers in the afternoon.
.THU NIGHT...NE winds 25 to 30 kt. Seas 8 to 10 ft, building to
9 to 11 ft after midnight. Wave Detail: E 10 ft at 8 seconds,
becoming E 10 ft at 9 seconds. A slight chance of showers in the
evening, then a chance of showers after midnight.
.FRI...NE winds 25 to 30 kt. Seas 9 to 11 ft. Wave Detail: E
10 ft at 9 seconds. A chance of showers. A slight chance of tstms
in the morning, then a chance of tstms in the afternoon.
.FRI NIGHT...NE winds 25 to 30 kt. Seas 9 to 11 ft. Wave Detail:
E 10 ft at 9 seconds. A chance of tstms. A chance of showers.
.SAT...N winds 25 to 30 kt. Seas 8 to 10 ft. A chance of showers.
.SAT NIGHT...N winds 25 to 30 kt. Seas 8 to 10 ft. A slight
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 6 to 8 ft.

Winds and seas higher in and near tstms.

$$

AMZ352-082200-
Waters from Edisto Beach SC to Savannah GA out 20 NM-
540 AM EDT Wed Oct 8 2025

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

.TODAY...NE winds 5 kt. Seas 3 to 4 ft. Wave Detail: SE 4 ft at
8 seconds.
.TONIGHT...E winds 5 kt, becoming NE 15 to 20 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. Seas 4 to 6 ft, building to 6 to
8 ft in the afternoon. Wave Detail: NE 6 ft at 5 seconds and SE
4 ft at 8 seconds, becoming E 7 ft at 7 seconds. A slight chance
of tstms in the morning. A chance of showers.
.THU NIGHT...NE winds 25 to 30 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 9 seconds. A chance of showers. A slight
chance of tstms after midnight.
.FRI...NE winds 25 to 30 kt. Seas 8 to 10 ft. Wave Detail: E
10 ft at 9 seconds. A chance of showers with a slight chance of
tstms.
.FRI NIGHT...NE winds 25 to 30 kt. Seas 9 to 11 ft. Wave Detail:
E 10 ft at 9 seconds. A chance of showers with a slight chance of
tstms.
.SAT...N winds 25 to 30 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.

$$

AMZ354-082200-
Waters from Savannah GA to Altamaha Sound GA out 20 NM, including
Grays Reef National Marine Sanctuary-
540 AM EDT Wed Oct 8 2025

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

.TODAY...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 10 to 15 kt with gusts
to 20 kt after midnight. Seas 3 to 4 ft. Wave Detail: E 4 ft at
8 seconds. A slight chance of showers and tstms.
.THU...NE winds 20 to 25 kt, increasing to 25 to 30 kt in the
afternoon. Seas 4 to 6 ft, building to 6 to 8 ft in the
afternoon. Wave Detail: NE 5 ft at 5 seconds and E 3 ft at
8 seconds, becoming E 7 ft at 7 seconds. A chance of showers with
a slight chance of tstms.
.THU NIGHT...NE winds 30 kt. Seas 7 to 9 ft, building to 8 to
10 ft after midnight. Wave Detail: NE 9 ft at 7 seconds, becoming
NE 10 ft at 8 seconds. A chance of showers. A slight chance of
tstms after midnight.
.FRI...NE winds 30 kt. Seas 8 to 10 ft. Wave Detail: NE 10 ft at
9 seconds. A chance of showers with a slight chance of tstms.
.FRI NIGHT...NE winds 30 kt. Seas 9 to 11 ft. Wave Detail: E
10 ft at 9 seconds. A chance of showers with a slight chance of
tstms.
.SAT...N winds 25 to 30 kt. Seas 8 to 10 ft. A chance of showers.
.SAT NIGHT...N winds 25 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.

$$

AMZ374-082200-
Waters from Savannah GA to Altamaha Sound GA from 20 to 60 NM-
540 AM EDT Wed Oct 8 2025

...SMALL CRAFT ADVISORY IN EFFECT FROM THURSDAY MORNING THROUGH
THURSDAY AFTERNOON...
...GALE WATCH IN EFFECT FROM THURSDAY AFTERNOON THROUGH SUNDAY
MORNING...

.TODAY...NE winds 5 to 10 kt. Seas 4 to 5 ft. Wave Detail: E 5 ft
at 8 seconds and E 1 foot at 11 seconds.
.TONIGHT...E winds 5 to 10 kt, becoming NE 10 to 15 kt with gusts
to 20 kt after midnight. Seas 4 ft. Wave Detail: E 4 ft at
8 seconds. A slight chance of showers. A slight chance of tstms
after midnight.
.THU...NE winds 20 to 25 kt, increasing to 25 to 30 kt in the
afternoon. Seas 5 to 7 ft, building to 7 to 9 ft in the
afternoon. Wave Detail: NE 6 ft at 5 seconds and E 4 ft at
8 seconds, becoming NE 9 ft at 7 seconds and E 3 ft at 8 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 12 ft after midnight. Wave Detail: NE 11 ft at
8 seconds, becoming NE 12 ft at 9 seconds. Showers likely. A
slight chance of tstms in the evening, then a chance of tstms
after midnight.
.FRI...NE winds 25 to 30 kt. Seas 11 to 12 ft. Wave Detail: NE
12 ft at 9 seconds. Showers likely with a chance of tstms.
.FRI NIGHT...NE winds 30 kt. Seas 11 to 12 ft, building to 11 to
13 ft after midnight. Wave Detail: NE 12 ft at 9 seconds. Showers
likely with a chance of tstms in the evening, then showers likely
with a slight chance of tstms after midnight.
.SAT...N winds 30 kt. Seas 10 to 13 ft. A chance of showers.
.SAT NIGHT...N winds 25 to 30 kt. Seas 9 to 13 ft. A slight
chance of showers.
.SUN...N winds 20 to 25 kt. Seas 9 to 11 ft. A slight chance of
showers.
.SUN NIGHT...N winds 20 to 25 kt. Seas 8 to 10 ft.

Winds and seas higher in and near tstms.

$$