862
FZUS52 KCHS 111718
CWFCHS

Coastal Waters Forecast
National Weather Service Charleston SC
118 PM EDT Sat Oct 11 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

AMZ300-120630-
118 PM EDT Sat Oct 11 2025

.Synopsis for the coastal waters of south coastal South Carolina
and north coastal Georgia...
Coastal low pressure will linger through Sunday before shifting
northeast while high pressure remains inland.

$$

AMZ330-120630-
Charleston Harbor-
118 PM EDT Sat Oct 11 2025

...SMALL CRAFT ADVISORY IN EFFECT THROUGH SUNDAY AFTERNOON...

.THIS AFTERNOON...N winds 20 to 25 kt with gusts to 30 kt. Waves
2 to 3 ft. Showers. A slight chance of tstms late.
.TONIGHT...N winds 20 to 25 kt with gusts to 30 kt. Waves 2 to
3 ft. Showers with a slight chance of tstms in the evening, then
showers likely after midnight.
.SUN...NW winds 15 to 20 kt with gusts to 30 kt. Waves 1 to 2 ft.
Showers likely.
.SUN NIGHT...NW winds 15 to 20 kt, diminishing to 10 to 15 kt
after midnight. Waves 1 to 2 ft. Showers likely, mainly in the
evening.
.MON...NW winds 10 to 15 kt with gusts to 20 kt. A slight chance
of showers in the morning.
.MON NIGHT...NW winds 10 kt.
.TUE...N winds 10 kt.
.TUE NIGHT...N winds 5 to 10 kt.
.WED...N winds 5 to 10 kt.
.WED NIGHT...N winds 5 to 10 kt.

Winds and waves higher in and near tstms.

Unless otherwise noted, waves 1 foot or less.

Charleston Harbor water temperature 71 degrees.

$$

AMZ350-120630-
Waters from South Santee River to Edisto Beach SC out 20 NM-
118 PM EDT Sat Oct 11 2025

...GALE WARNING IN EFFECT THROUGH LATE TONIGHT...

.THIS AFTERNOON...N winds 25 to 30 kt with gusts to 40 kt. Seas
7 to 10 ft, except 4 to 6 ft near the immediate coast. Wave
Detail: E 9 ft at 10 seconds. Showers with a slight chance of
tstms.
.TONIGHT...N winds 25 to 30 kt with gusts to 40 kt. Seas 8 to
10 ft, subsiding to 7 to 9 ft after midnight, except holding 4 to
6 ft near the immediate coast. Wave Detail: E 9 ft at 10 seconds.
Showers with a slight chance of tstms in the evening, then a
chance of showers after midnight.
.SUN...NW winds 25 to 30 kt. Seas 6 to 8 ft, subsiding to 5 to
7 ft in the afternoon. Wave Detail: E 8 ft at 10 seconds and NW
5 ft at 4 seconds, becoming E 6 ft at 10 seconds and NW 5 ft at
5 seconds. Showers likely, mainly in the morning.
.SUN NIGHT...NW winds 20 to 25 kt with gusts to 30 kt. Seas 5 to
7 ft, subsiding to 4 to 6 ft after midnight. Wave Detail: NW 5 ft
at 5 seconds and E 5 ft at 10 seconds, becoming N 5 ft at
6 seconds and E 4 ft at 12 seconds. A chance of showers.
.MON...NW winds 15 to 20 kt with gusts to 25 kt. Seas 4 to 6 ft.
Wave Detail: N 4 ft at 5 seconds and SE 4 ft at 12 seconds. A
slight chance of showers in the morning.
.MON NIGHT...NW winds 15 kt with gusts to 20 kt. Seas 4 to 5 ft.
Wave Detail: N 3 ft at 5 seconds and SE 3 ft at 11 seconds.
.TUE...N winds 10 to 15 kt. Seas 3 to 4 ft.
.TUE NIGHT...N winds 10 to 15 kt. Seas 3 to 4 ft.
.WED...N winds 10 to 15 kt. Seas 4 to 5 ft.
.WED NIGHT...N winds 10 to 15 kt. Seas 3 to 4 ft.

Winds and seas higher in and near tstms.

$$

AMZ352-120630-
Waters from Edisto Beach SC to Savannah GA out 20 NM-
118 PM EDT Sat Oct 11 2025

...GALE WARNING IN EFFECT THROUGH LATE TONIGHT...

.THIS AFTERNOON...N winds 25 to 30 kt with gusts to 40 kt. Seas
7 to 9 ft, except 4 to 6 ft near the immediate coast. Wave
Detail: E 9 ft at 10 seconds. Showers.
.TONIGHT...N winds 25 to 30 kt with gusts to 40 kt. Seas 7 to
9 ft, subsiding to 6 to 8 ft after midnight, except holding 4 to
6 ft near the immediate coast. Wave Detail: E 9 ft at 10 seconds,
becoming E 8 ft at 10 seconds. A chance of showers.
.SUN...NW winds 20 to 25 kt with gusts to 30 kt. Seas 5 to 7 ft.
Wave Detail: E 7 ft at 10 seconds and NW 5 ft at 4 seconds. A
chance of showers.
.SUN NIGHT...NW winds 20 to 25 kt, diminishing to 15 to 20 kt
after midnight. Seas 4 to 6 ft. Wave Detail: NW 5 ft at 4 seconds
and E 5 ft at 11 seconds. A chance of showers.
.MON...NW winds 15 to 20 kt, diminishing to 10 to 15 kt in the
afternoon. Seas 4 to 5 ft. Wave Detail: NW 4 ft at 4 seconds and
E 4 ft at 12 seconds. A slight chance of showers in the morning.
.MON NIGHT...N winds 10 to 15 kt with gusts to 20 kt. Seas 4 to
5 ft, subsiding to 3 to 4 ft after midnight. Wave Detail: E 4 ft
at 11 seconds and NW 2 ft at 3 seconds, becoming E 3 ft at
11 seconds and NW 2 ft at 3 seconds.
.TUE...N winds 10 to 15 kt. Seas 3 to 4 ft.
.TUE NIGHT...N winds 10 to 15 kt. Seas 3 ft.
.WED...NE winds 10 to 15 kt. Seas 3 to 4 ft.
.WED NIGHT...NE winds 5 to 10 kt. Seas 3 ft.

$$

AMZ354-120630-
Waters from Savannah GA to Altamaha Sound GA out 20 NM, including
Grays Reef National Marine Sanctuary-
118 PM EDT Sat Oct 11 2025

...GALE WARNING IN EFFECT THROUGH LATE TONIGHT...

.THIS AFTERNOON...N winds 25 to 30 kt with gusts to 35 kt. Seas 7
to 9 ft, except 4 to 6 ft near the immediate coast. Wave Detail:
NE 9 ft at 10 seconds. A chance of showers.
.TONIGHT...N winds 25 to 30 kt, diminishing to 20 to 25 kt after
midnight. Seas 7 to 9 ft, subsiding to 6 to 8 ft after midnight,
except holding 4 to 6 ft near the immediate coast. Wave Detail:
NE 9 ft at 10 seconds, becoming NE 8 ft at 10 seconds. A chance of
showers, mainly in the evening.
.SUN...NW winds 20 to 25 kt with gusts to 30 kt. Seas 5 to 7 ft,
subsiding to 4 to 6 ft in the afternoon. Wave Detail: NE 7 ft at
10 seconds, becoming E 6 ft at 10 seconds. A chance of showers.
.SUN NIGHT...NW winds 20 to 25 kt, diminishing to 15 to 20 kt
after midnight. Seas 4 to 6 ft, subsiding to 4 to 5 ft after
midnight. Wave Detail: E 6 ft at 10 seconds and NW 4 ft at
4 seconds, becoming NE 4 ft at 10 seconds and E 4 ft at
12 seconds. A chance of showers.
.MON...NW winds 15 to 20 kt, becoming N 10 to 15 kt in the
afternoon. Seas 4 to 5 ft. Wave Detail: E 5 ft at 12 seconds.
.MON NIGHT...N winds 10 to 15 kt. Seas 4 to 5 ft, subsiding to
3 to 4 ft after midnight. Wave Detail: E 4 ft at 11 seconds.
.TUE...N winds 10 to 15 kt. Seas 3 to 4 ft.
.TUE NIGHT...NE winds 10 to 15 kt. Seas 3 ft.
.WED...NE winds 10 to 15 kt. Seas 3 to 4 ft.
.WED NIGHT...NE winds 5 to 10 kt. Seas 3 to 4 ft.

$$

AMZ374-120630-
Waters from Savannah GA to Altamaha Sound GA from 20 to 60 NM-
118 PM EDT Sat Oct 11 2025

...GALE WARNING IN EFFECT THROUGH LATE TONIGHT...

.THIS AFTERNOON...N winds 30 to 35 kt with gusts to 40 kt. Seas
10 to 13 ft. Wave Detail: NE 11 ft at 10 seconds. A slight chance
of tstms. Showers likely.
.TONIGHT...N winds 25 to 30 kt with gusts to 40 kt. Seas 10 to
13 ft, subsiding to 9 to 11 ft after midnight. Wave Detail: NE
11 ft at 10 seconds, becoming NE 10 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...NW winds 20 to 25 kt with gusts to 30 kt. Seas 8 to 10 ft,
subsiding to 7 to 9 ft in the afternoon. Wave Detail: NE 9 ft at
10 seconds and SE 1 foot at 14 seconds, becoming NE 8 ft at
10 seconds and NW 6 ft at 6 seconds. A slight chance of showers
in the morning, then a chance of showers in the afternoon.
.SUN NIGHT...NW winds 20 to 25 kt, diminishing to 15 to 20 kt
after midnight. Seas 7 to 9 ft, subsiding to 6 to 8 ft after
midnight. Wave Detail: NW 6 ft at 6 seconds and E 6 ft at
10 seconds, becoming NW 6 ft at 6 seconds and E 5 ft at
10 seconds. A chance of showers.
.MON...NW winds 15 to 20 kt with gusts to 25 kt. Seas 6 to 7 ft,
subsiding to 5 to 7 ft in the afternoon. Wave Detail: NW 5 ft at
5 seconds and E 5 ft at 11 seconds, becoming E 5 ft at 11 seconds
and N 4 ft at 6 seconds. A slight chance of showers in the
morning.
.MON NIGHT...N winds 10 to 15 kt with gusts to 20 kt. Seas 5 to
6 ft, subsiding to 4 to 6 ft after midnight. Wave Detail: E 5 ft
at 11 seconds and N 3 ft at 5 seconds, becoming E 4 ft at
11 seconds and N 3 ft at 6 seconds.
.TUE...N winds 10 to 15 kt. Seas 4 to 5 ft.
.TUE NIGHT...NE winds 10 to 15 kt. Seas 4 to 5 ft.
.WED...N winds 10 to 15 kt. Seas 4 to 5 ft.
.WED NIGHT...NE winds 10 to 15 kt. Seas 4 to 5 ft.

Winds and seas higher in and near tstms.

$$