966
FZUS52 KCHS 110530
CWFCHS

Coastal Waters Forecast
National Weather Service Charleston SC
1230 AM EST Thu Dec 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

AMZ300-111800-
1230 AM EST Thu Dec 11 2025

.Synopsis for the coastal waters of south coastal South Carolina
and north coastal Georgia...
High pressure will prevail through Saturday, then an arctic cold
front will sweep through late Sunday. Dry high pressure will then
rebuild.

$$

AMZ330-111800-
Charleston Harbor-
1230 AM EST Thu Dec 11 2025

...SMALL CRAFT ADVISORY IN EFFECT UNTIL 5 AM EST EARLY THIS
MORNING...

.REST OF TONIGHT...W winds 15 to 20 kt with gusts to 25 kt. Waves
1 to 2 ft.
.THU...NW winds 10 to 15 kt with gusts to 20 kt, diminishing to
5 to 10 kt in the afternoon.
.THU NIGHT...W winds 5 kt.
.FRI...SW winds 5 to 10 kt.
.FRI NIGHT...SW winds 5 to 10 kt.
.SAT...W winds 5 kt.
.SAT NIGHT...SW winds 5 kt.
.SUN...NW winds 10 to 15 kt. A slight chance of showers.
.SUN NIGHT...N winds 15 to 20 kt. Waves 1 to 2 ft.
.MON...N winds 10 to 15 kt.
.MON NIGHT...N winds 5 kt.

Unless otherwise noted, waves 1 foot or less.

Charleston Harbor water temperature 55 degrees.

$$

AMZ350-111800-
Waters from South Santee River to Edisto Beach SC out 20 NM-
1230 AM EST Thu Dec 11 2025

...SMALL CRAFT ADVISORY IN EFFECT UNTIL 7 AM EST THIS MORNING...

.REST OF TONIGHT...W winds 20 to 25 kt with gusts to 35 kt. Seas
4 to 6 ft. Wave Detail: SW 5 ft at 6 seconds and E 2 ft at
10 seconds.
.THU...NW winds 15 to 20 kt with gusts to 25 kt, diminishing to
10 to 15 kt in the afternoon. Seas 4 to 5 ft, subsiding to 2 to
3 ft in the afternoon. Wave Detail: W 5 ft at 6 seconds and E
2 ft at 9 seconds, becoming NW 3 ft at 5 seconds and E 1 foot at
9 seconds.
.THU NIGHT...W winds 5 to 10 kt. Seas 2 ft. Wave Detail: W 2 ft
at 5 seconds and E 1 foot at 8 seconds.
.FRI...W winds 5 to 10 kt, becoming SW 10 to 15 kt with gusts to
20 kt in the afternoon. Seas 2 to 3 ft. Wave Detail: SW 2 ft at
4 seconds and SE 1 foot at 8 seconds.
.FRI NIGHT...W winds 10 to 15 kt with gusts to 20 kt. Seas 2 to
3 ft. Wave Detail: SW 3 ft at 4 seconds and SE 1 foot at
8 seconds.
.SAT...W winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: SW 2 ft
at 5 seconds and SE 1 foot at 9 seconds.
.SAT NIGHT...SW winds 5 to 10 kt. Seas 2 ft.
.SUN...NW winds 20 to 25 kt. Seas 3 to 4 ft. A slight chance of
showers.
.SUN NIGHT...N winds 25 to 30 kt. Seas 4 to 6 ft.
.MON...N winds 20 to 25 kt. Seas 5 to 7 ft.
.MON NIGHT...N winds 5 to 10 kt. Seas 4 to 5 ft.

$$

AMZ352-111800-
Waters from Edisto Beach SC to Savannah GA out 20 NM-
1230 AM EST Thu Dec 11 2025

...SMALL CRAFT ADVISORY IN EFFECT UNTIL 7 AM EST THIS MORNING...

.REST OF TONIGHT...W winds 20 kt with gusts to 25 kt. Seas 4 to
5 ft. Wave Detail: W 4 ft at 5 seconds and E 2 ft at 10 seconds.
.THU...NW winds 15 to 20 kt, diminishing to 10 to 15 kt in the
afternoon. Seas 4 to 5 ft, subsiding to 2 to 3 ft in the
afternoon. Wave Detail: NW 4 ft at 5 seconds and E 2 ft at
10 seconds, becoming NW 3 ft at 4 seconds and E 2 ft at
9 seconds.
.THU NIGHT...W winds 10 kt. Seas 2 ft. Wave Detail: W 2 ft at
4 seconds and E 1 foot at 8 seconds.
.FRI...W winds 5 to 10 kt, becoming SW 10 to 15 kt in the
afternoon. Seas 2 ft. Wave Detail: SW 2 ft at 3 seconds and E
1 foot at 9 seconds.
.FRI NIGHT...SW winds 10 to 15 kt. Seas 2 to 3 ft. Wave Detail:
SW 2 ft at 4 seconds and SE 1 foot at 8 seconds.
.SAT...W winds 5 to 10 kt, becoming SW in the afternoon. Seas
2 ft. Wave Detail: SW 2 ft at 4 seconds and SE 1 foot at
8 seconds.
.SAT NIGHT...SW winds 5 to 10 kt. Seas 1 foot or less, then
around 2 ft after midnight.
.SUN...W winds 15 to 20 kt. Seas 2 to 3 ft. A slight chance of
showers.
.SUN NIGHT...N winds 25 to 30 kt. Seas 4 to 6 ft.
.MON...NE winds 20 to 25 kt. Seas 4 to 6 ft.
.MON NIGHT...N winds 5 to 10 kt. Seas 3 to 4 ft.

$$

AMZ354-111800-
Waters from Savannah GA to Altamaha Sound GA out 20 NM, including
Grays Reef National Marine Sanctuary-
1230 AM EST Thu Dec 11 2025

...SMALL CRAFT ADVISORY IN EFFECT UNTIL 5 AM EST EARLY THIS
MORNING...

.REST OF TONIGHT...W winds 15 to 20 kt with gusts to 25 kt. Seas
4 to 5 ft. Wave Detail: W 4 ft at 4 seconds and E 3 ft at
10 seconds.
.THU...NW winds 15 to 20 kt with gusts to 25 kt, diminishing to
10 to 15 kt in the afternoon. Seas 3 to 4 ft. Wave Detail: NW
4 ft at 4 seconds and E 2 ft at 10 seconds.
.THU NIGHT...W winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: W
2 ft at 3 seconds and E 2 ft at 9 seconds.
.FRI...W winds 5 to 10 kt, becoming SW 10 to 15 kt in the
afternoon. Seas 2 ft. Wave Detail: SW 2 ft at 3 seconds and E
1 foot at 8 seconds.
.FRI NIGHT...SW winds 10 to 15 kt. Seas 2 ft. Wave Detail: SW
2 ft at 3 seconds and SE 1 foot at 8 seconds.
.SAT...W winds 5 to 10 kt, becoming SW in the afternoon. Seas
1 to 2 ft. Wave Detail: SW 2 ft at 3 seconds and SE 1 foot at
8 seconds, becoming SW 1 foot at 3 seconds and SE 1 foot at
8 seconds.
.SAT NIGHT...SW winds 5 to 10 kt. Seas 1 foot or less, then
around 2 ft after midnight.
.SUN...W winds 15 to 20 kt. Seas 2 to 3 ft.
.SUN NIGHT...N winds 25 to 30 kt. Seas 4 to 6 ft.
.MON...NE winds 20 to 25 kt. Seas 5 to 7 ft.
.MON NIGHT...N winds 5 to 10 kt. Seas 4 to 5 ft.

$$

AMZ374-111800-
Waters from Savannah GA to Altamaha Sound GA from 20 to 60 NM-
1230 AM EST Thu Dec 11 2025

...SMALL CRAFT ADVISORY IN EFFECT UNTIL NOON EST TODAY...

.REST OF TONIGHT...W winds 20 kt with gusts to 30 kt. Seas 5 to
7 ft. Wave Detail: W 6 ft at 5 seconds and E 4 ft at 10 seconds.
.THU...NW winds 15 to 20 kt, diminishing to 10 to 15 kt in the
afternoon. Seas 5 to 7 ft, subsiding to 4 to 5 ft in the
afternoon. Wave Detail: NW 5 ft at 5 seconds and E 3 ft at
10 seconds, becoming NW 4 ft at 5 seconds and E 3 ft at
9 seconds.
.THU NIGHT...W winds 10 to 15 kt. Seas 3 to 4 ft, subsiding to
2 to 3 ft after midnight. Wave Detail: NW 3 ft at 4 seconds and E
2 ft at 9 seconds, becoming W 2 ft at 4 seconds and E 2 ft at
9 seconds.
.FRI...W winds 5 to 10 kt, becoming SW 10 to 15 kt in the
afternoon. Seas 2 to 3 ft. Wave Detail: W 2 ft at 3 seconds and E
2 ft at 9 seconds.
.FRI NIGHT...SW winds 10 to 15 kt with gusts to 20 kt. Seas 2 to
3 ft. Wave Detail: SW 3 ft at 4 seconds and SE 2 ft at 8 seconds.
.SAT...W winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: SW 2 ft
at 4 seconds and SE 1 foot at 9 seconds.
.SAT NIGHT...SW winds 5 to 10 kt. Seas 2 ft.
.SUN...W winds 15 to 20 kt. Seas 3 to 4 ft.
.SUN NIGHT...N winds 25 to 30 kt. Seas 6 to 8 ft.
.MON...NE winds 20 to 25 kt. Seas 6 to 8 ft. A slight chance of
showers.
.MON NIGHT...N winds 10 to 15 kt. Seas 5 to 7 ft.

$$