147
FZUS52 KCHS 010939
CWFCHS

Coastal Waters Forecast
National Weather Service Charleston SC
539 AM EDT Thu Oct 1 2026

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

AMZ300-012300-
539 AM EDT Thu Oct 1 2026

.Synopsis for the coastal waters of south coastal South Carolina
and north coastal Georgia...
High pressure will extend across the region this week. A cold
front will push through the waters Monday, bringing increasing
winds and seas.

$$

AMZ340-012300-
Charleston Harbor-
539 AM EDT Thu Oct 1 2026

.TODAY...NE winds 5 to 10 kt, becoming E late. Patchy fog early
this morning.
.TONIGHT...E winds 5 to 10 kt, becoming SE after midnight.
.FRI...E winds 5 kt, becoming SE in the afternoon.
.FRI NIGHT...S winds 5 kt. A chance of showers with a slight
chance of tstms after midnight.
.SAT...SW winds 5 kt, becoming SE in the afternoon. Showers
likely with a slight chance of tstms.
.SAT NIGHT...SE winds 5 to 10 kt. Showers likely with a chance of
tstms.
.SUN...S winds 5 to 10 kt. Showers with a chance of tstms.
.SUN NIGHT...W winds 5 to 10 kt. Showers likely with a chance of
tstms.
.MON...N winds 5 to 10 kt. Showers likely with a slight chance of
tstms.
.MON NIGHT...NE winds 10 to 15 kt. A chance of showers.

Winds and waves higher in and near tstms.

Unless otherwise noted, waves 1 foot or less.

Charleston Harbor water temperature 78 degrees.

$$

AMZ360-012300-
Coastal waters from South Santee River to Edisto Beach SC out
20 NM-
539 AM EDT Thu Oct 1 2026

.TODAY...NE winds 5 to 10 kt. Seas 2 ft. Wave Detail: E 2 ft at
4 seconds and E 1 foot at 11 seconds.
.TONIGHT...E winds 5 to 10 kt, becoming SE after midnight. Seas
2 ft. Wave Detail: E 2 ft at 4 seconds and E 1 foot at
12 seconds.
.FRI...E winds 5 kt. Seas 2 ft. Wave Detail: E 1 foot at
4 seconds and E 1 foot at 11 seconds.
.FRI NIGHT...S winds 5 to 10 kt. Seas 2 ft. Wave Detail: S 2 ft
at 4 seconds and E 2 ft at 11 seconds. A chance of showers and
tstms after midnight.
.SAT...SW winds 5 kt, becoming SE in the afternoon. Seas 2 ft.
Wave Detail: SE 2 ft at 6 seconds and E 2 ft at 12 seconds.
Showers likely. A chance of tstms, mainly in the morning.
.SAT NIGHT...SE winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: SE
2 ft at 7 seconds and E 1 foot at 11 seconds. A chance of tstms.
Showers likely.
.SUN...S winds 5 to 10 kt. Seas 2 to 3 ft. Showers likely with a
chance of tstms.
.SUN NIGHT...W winds 5 to 10 kt. Seas 2 to 3 ft. Showers with a
chance of tstms.
.MON...N winds 10 to 15 kt. Seas 2 to 3 ft. Showers likely with a
slight chance of tstms.
.MON NIGHT...NE winds 20 to 25 kt. Seas 3 to 4 ft. A chance of
showers.

Winds and seas higher in and near tstms.

$$

AMZ362-012300-
Coastal waters from Edisto Beach SC to Savannah GA out 20 NM-
539 AM EDT Thu Oct 1 2026

.TODAY...E winds 5 to 10 kt. Seas 2 ft. Wave Detail: E 1 foot at
3 seconds and E 1 foot at 13 seconds.
.TONIGHT...SE winds 5 to 10 kt. Seas 2 ft. Wave Detail: E 2 ft at
4 seconds and E 1 foot at 11 seconds.
.FRI...SE winds 5 kt. Seas 2 ft. Wave Detail: E 1 foot at
4 seconds and E 1 foot at 11 seconds. A slight chance of showers.
A slight chance of tstms in the afternoon.
.FRI NIGHT...SE winds 5 to 10 kt, becoming S after midnight. Seas
2 ft. Wave Detail: SE 2 ft at 4 seconds and E 1 foot at
11 seconds. A slight chance of showers and tstms in the evening,
then a chance of showers and tstms after midnight.
.SAT...SW winds 5 kt, becoming SE in the afternoon. Seas 2 ft.
Wave Detail: SE 2 ft at 6 seconds and E 1 foot at 11 seconds.
Showers likely. A chance of tstms, mainly in the morning.
.SAT NIGHT...SE winds 5 to 10 kt. Seas 2 ft. Wave Detail: SE 2 ft
at 7 seconds and E 1 foot at 11 seconds. Showers likely with a
chance of tstms.
.SUN...S winds 5 to 10 kt. Seas 2 ft. Showers likely with a
chance of tstms.
.SUN NIGHT...SW winds 5 to 10 kt. Seas 2 ft. Showers with a
chance of tstms.
.MON...N winds 10 to 15 kt. Seas 2 to 3 ft. Showers likely with a
slight chance of tstms.
.MON NIGHT...NE winds 20 to 25 kt. Seas 3 to 4 ft. A chance of
showers.

Winds and seas higher in and near tstms.

$$

AMZ364-012300-
Coastal waters from Savannah GA to Altamaha Sound GA out 20 nm,
including Grays Reef National Marine Sanctuary-
539 AM EDT Thu Oct 1 2026

.TODAY...E winds 5 to 10 kt. Seas 2 ft. Wave Detail: E 2 ft at
4 seconds and SE 1 foot at 12 seconds.
.TONIGHT...SE winds 5 to 10 kt. Seas 2 ft. Wave Detail: E 2 ft at
4 seconds and E 1 foot at 12 seconds.
.FRI...SE winds 5 to 10 kt. Seas 2 ft. Wave Detail: SE 2 ft at
4 seconds and E 1 foot at 11 seconds. A chance of showers. A
slight chance of tstms in the morning, then a chance of tstms in
the afternoon.
.FRI NIGHT...SE winds 5 to 10 kt, becoming S after midnight. Seas
2 ft. Wave Detail: SE 2 ft at 4 seconds and E 1 foot at
11 seconds. A slight chance of tstms. A slight chance of showers
in the evening, then a chance of showers after midnight.
.SAT...SE winds 5 to 10 kt. Seas 2 ft. Wave Detail: SE 2 ft at
5 seconds and E 1 foot at 11 seconds. Showers likely with a
chance of tstms.
.SAT NIGHT...SE winds 5 to 10 kt. Seas 2 ft. Wave Detail: SE 2 ft
at 6 seconds and E 1 foot at 11 seconds. Showers likely with a
chance of tstms.
.SUN...S winds 5 to 10 kt. Seas 2 ft. Showers likely with a
chance of tstms.
.SUN NIGHT...SW winds 5 to 10 kt. Seas 2 ft. Showers with a
chance of tstms.
.MON...N winds 10 to 15 kt. Seas 2 to 3 ft. Showers likely with a
slight chance of tstms.
.MON NIGHT...NE winds 20 to 25 kt. Seas 3 to 4 ft. A chance of
showers.

Winds and seas higher in and near tstms.

$$

AMZ380-012300-
Waters from South Santee River SC to Edisto Beach SC extending
from 20 to 60 NM-
539 AM EDT Thu Oct 1 2026

.TODAY...NE winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: E 2 ft
at 4 seconds and E 2 ft at 10 seconds.
.TONIGHT...E winds 5 to 10 kt, becoming SE after midnight. Seas
2 ft. Wave Detail: E 2 ft at 4 seconds and E 2 ft at 11 seconds.
.FRI...SE winds 5 kt. Seas 2 ft. Wave Detail: E 2 ft at
10 seconds and E 1 foot at 3 seconds.
.FRI NIGHT...S winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: S
2 ft at 4 seconds and E 2 ft at 10 seconds. A chance of showers
and tstms after midnight.
.SAT...SW winds 5 kt, becoming SE in the afternoon. Seas 2 to
3 ft. Wave Detail: S 2 ft at 6 seconds and E 2 ft at 11 seconds.
Showers likely. A chance of tstms, mainly in the morning.
.SAT NIGHT...SE winds 10 kt. Seas 2 to 3 ft. Wave Detail: SE 2 ft
at 7 seconds and E 2 ft at 11 seconds. A chance of tstms. Showers
likely.
.SUN...S winds 10 kt. Seas 3 ft. Showers likely with a chance of
tstms.
.SUN NIGHT...SW winds 10 kt. Seas 3 ft. Showers with a chance of
tstms.
.MON...N winds 15 to 20 kt. Seas 3 to 4 ft. Showers likely with a
slight chance of tstms.
.MON NIGHT...NE winds 20 to 25 kt. Seas 5 to 7 ft. A chance of
showers with a slight chance of tstms.

Winds and seas higher in and near tstms.

$$

AMZ382-012300-
Waters from Edisto Beach SC to Savannah GA extending from 20 to
60 NM-
539 AM EDT Thu Oct 1 2026

.TODAY...E winds 10 kt, becoming NE late this morning. Seas 2 ft.
Wave Detail: E 2 ft at 4 seconds and E 2 ft at 12 seconds. A
slight chance of showers early this afternoon.
.TONIGHT...SE winds 5 to 10 kt. Seas 2 ft. Wave Detail: E 2 ft at
4 seconds and E 2 ft at 11 seconds.
.FRI...SE winds 5 kt. Seas 2 ft. Wave Detail: SE 2 ft at
4 seconds and E 2 ft at 11 seconds. A chance of showers in the
morning, then a slight chance of showers and tstms in the
afternoon.
.FRI NIGHT...S winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: SE
2 ft at 4 seconds and E 2 ft at 11 seconds. A slight chance of
showers and tstms in the evening, then showers likely with a
chance of tstms after midnight.
.SAT...S winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: SE 2 ft
at 6 seconds and E 2 ft at 11 seconds. Showers likely. A chance
of tstms, mainly in the morning.
.SAT NIGHT...SE winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: SE
2 ft at 7 seconds and E 2 ft at 11 seconds. Showers likely with a
chance of tstms.
.SUN...S winds 5 to 10 kt. Seas 2 to 3 ft. Showers likely with a
chance of tstms.
.SUN NIGHT...SW winds 5 to 10 kt. Seas 2 to 3 ft. Showers with a
chance of tstms.
.MON...N winds 15 to 20 kt. Seas 3 to 4 ft. Showers likely with a
slight chance of tstms.
.MON NIGHT...NE winds 20 to 25 kt. Seas 4 to 6 ft. A chance of
showers with a slight chance of tstms.

Winds and seas higher in and near tstms.

$$

AMZ384-012300-
Waters from Savannah GA to Altamaha Sound GA extending from 20 to
60 NM-
539 AM EDT Thu Oct 1 2026

.TODAY...E winds 10 kt, becoming 5 to 10 kt late this morning.
Seas 2 ft. Wave Detail: E 2 ft at 3 seconds and SE 2 ft at
12 seconds.
.TONIGHT...SE winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: E
2 ft at 4 seconds and E 2 ft at 11 seconds.
.FRI...SE winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: SE 2 ft
at 4 seconds and E 2 ft at 11 seconds. A chance of showers. A
slight chance of tstms in the morning, then a chance of tstms in
the afternoon.
.FRI NIGHT...SE winds 5 to 10 kt, becoming S after midnight. Seas
2 to 3 ft. Wave Detail: SE 2 ft at 4 seconds and E 2 ft at
11 seconds. A slight chance of showers and tstms in the evening,
then showers likely with a chance of tstms after midnight.
.SAT...S winds 5 to 10 kt, becoming SE in the afternoon. Seas
2 to 3 ft. Wave Detail: SE 2 ft at 6 seconds and E 2 ft at
10 seconds. Showers likely with a chance of tstms.
.SAT NIGHT...SE winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: SE
2 ft at 7 seconds and E 2 ft at 12 seconds. Showers likely with a
chance of tstms.
.SUN...S winds 5 to 10 kt. Seas 2 to 3 ft. Showers likely with a
chance of tstms.
.SUN NIGHT...SW winds 5 to 10 kt. Seas 2 to 3 ft. Showers with a
chance of tstms.
.MON...N winds 10 to 15 kt. Seas 2 to 3 ft. Showers likely with a
slight chance of tstms.
.MON NIGHT...NE winds 20 to 25 kt. Seas 4 to 6 ft. Showers likely
with a slight chance of tstms.

Winds and seas higher in and near tstms.

$$