FZUS52 KCHS 131720
CWFCHS
Coastal Waters Forecast
National Weather Service Charleston SC
1219 PM EST Sat Dec 13 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
AMZ300-140600-
1219 PM EST Sat Dec 13 2025
.Synopsis for the coastal waters of south coastal South Carolina
and north coastal Georgia...
High pressure will prevail today, then an arctic cold front will
sweep through Sunday. Dry high pressure will then build overhead
for much of the coming week.
$$
AMZ330-140600-
Charleston Harbor-
1219 PM EST Sat Dec 13 2025
...SMALL CRAFT ADVISORY IN EFFECT FROM SUNDAY AFTERNOON THROUGH
MONDAY MORNING...
.THIS AFTERNOON...SW winds 5 kt.
.TONIGHT...SW winds 5 to 10 kt.
.SUN...W winds 10 kt, becoming N 15 to 20 kt with gusts to 25 kt
in the afternoon. Waves 1 to 2 ft. A chance of showers in the
morning.
.SUN NIGHT...N winds 15 to 20 kt with gusts to 30 kt. Waves 1 to
2 ft.
.MON...N winds 10 to 15 kt with gusts to 20 kt, diminishing to
5 to 10 kt in the afternoon.
.MON NIGHT...NW winds 5 kt.
.TUE...W winds 5 kt.
.TUE NIGHT...SW winds 5 kt.
.WED...W winds 5 kt.
.WED NIGHT...S winds 5 kt.
Unless otherwise noted, waves 1 foot or less.
Charleston Harbor water temperature 54 degrees.
$$
AMZ350-140600-
Waters from South Santee River to Edisto Beach SC out 20 NM-
1219 PM EST Sat Dec 13 2025
...GALE WATCH IN EFFECT FROM SUNDAY AFTERNOON THROUGH MONDAY
MORNING...
.THIS AFTERNOON...SW winds 5 to 10 kt. Seas 2 ft. Wave Detail: SW
1 foot at 4 seconds and SE 1 foot at 8 seconds.
.TONIGHT...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.
.SUN...W winds 15 to 20 kt with gusts to 25 kt, becoming N 25 to
30 kt in the afternoon. Seas 2 to 3 ft, building to 4 to 5 ft in
the afternoon. Wave Detail: SW 3 ft at 4 seconds and SE 1 foot at
8 seconds, becoming NW 4 ft at 4 seconds and SE 1 foot at
8 seconds. A chance of showers, mainly in the morning.
.SUN NIGHT...N winds 25 to 30 kt. Seas 4 to 6 ft, building to
5 to 7 ft after midnight. Wave Detail: NE 6 ft at 9 seconds and
NW 5 ft at 5 seconds, becoming NE 6 ft at 6 seconds.
.MON...N winds 20 to 25 kt, diminishing to 10 to 15 kt in the
afternoon. Seas 5 to 7 ft, subsiding to 4 to 6 ft in the
afternoon. Wave Detail: NE 6 ft at 8 seconds, becoming NE 6 ft at
9 seconds.
.MON NIGHT...NW winds 5 to 10 kt. Seas 4 to 5 ft, subsiding to
3 to 4 ft after midnight. Wave Detail: E 4 ft at 9 seconds.
.TUE...W winds 5 to 10 kt. Seas 2 to 3 ft.
.TUE NIGHT...W winds 5 kt. Seas 2 to 3 ft.
.WED...W winds 5 to 10 kt. Seas 2 ft.
.WED NIGHT...SW winds 5 kt. Seas 2 ft.
$$
AMZ352-140600-
Waters from Edisto Beach SC to Savannah GA out 20 NM-
1219 PM EST Sat Dec 13 2025
...GALE WATCH IN EFFECT FROM SUNDAY AFTERNOON THROUGH MONDAY
MORNING...
.THIS AFTERNOON...SW winds 5 to 10 kt. Seas 2 ft. Wave Detail: S
1 foot at 3 seconds and SE 1 foot at 8 seconds.
.TONIGHT...SW winds 5 to 10 kt, increasing to 10 to 15 kt after
midnight. Seas 2 ft. Wave Detail: SW 2 ft at 3 seconds and SE
1 foot at 8 seconds.
.SUN...W winds 10 to 15 kt, becoming N 20 to 25 kt in the
afternoon. Seas 2 to 3 ft, building to 3 to 4 ft in the
afternoon. Wave Detail: SW 2 ft at 4 seconds and SE 1 foot at
8 seconds, becoming NW 3 ft at 4 seconds and SE 1 foot at
8 seconds. A slight chance of showers in the morning.
.SUN NIGHT...N winds 25 to 30 kt. Seas 4 to 6 ft, building to
5 to 7 ft after midnight. Wave Detail: NE 6 ft at 8 seconds and N
4 ft at 4 seconds, becoming NE 6 ft at 6 seconds.
.MON...NE winds 20 to 25 kt, diminishing to 10 to 15 kt in the
afternoon. Seas 4 to 6 ft, subsiding to 4 to 5 ft in the
afternoon. Wave Detail: NE 6 ft at 7 seconds, becoming NE 5 ft at
9 seconds.
.MON NIGHT...N winds 5 kt. Seas 3 to 4 ft. Wave Detail: E 4 ft at
9 seconds.
.TUE...W winds 5 kt. Seas 2 to 3 ft.
.TUE NIGHT...SW winds 5 kt. Seas 2 to 3 ft.
.WED...W winds 5 kt. Seas 2 ft.
.WED NIGHT...SE winds 5 kt. Seas 2 ft.
$$
AMZ354-140600-
Waters from Savannah GA to Altamaha Sound GA out 20 NM, including
Grays Reef National Marine Sanctuary-
1219 PM EST Sat Dec 13 2025
...GALE WATCH IN EFFECT FROM SUNDAY AFTERNOON THROUGH MONDAY
MORNING...
.THIS AFTERNOON...SW winds 5 kt. Seas 1 foot or less. Wave
Detail: S 1 foot at 3 seconds and SE 1 foot at 8 seconds.
.TONIGHT...SW winds 5 to 10 kt. Seas 2 ft. Wave Detail: S 1 foot
at 3 seconds and SE 1 foot at 8 seconds.
.SUN...W winds 10 to 15 kt, becoming NW 20 to 25 kt in the
afternoon. Seas 2 ft, building to 3 to 4 ft in the afternoon.
Wave Detail: SW 2 ft at 3 seconds and SE 1 foot at 8 seconds,
becoming NW 3 ft at 4 seconds and SE 1 foot at 8 seconds.
.SUN NIGHT...N winds 25 to 30 kt. Seas 4 to 6 ft, building to
5 to 7 ft after midnight. Wave Detail: NE 6 ft at 8 seconds and N
5 ft at 4 seconds, becoming NE 7 ft at 6 seconds.
.MON...NE winds 20 to 25 kt with gusts to 30 kt, diminishing to
15 to 20 kt in the afternoon. Seas 5 to 7 ft, subsiding to 4 to
6 ft in the afternoon. Wave Detail: NE 7 ft at 7 seconds,
becoming NE 6 ft at 9 seconds.
.MON NIGHT...N winds 5 to 10 kt. Seas 4 to 5 ft, subsiding to
3 to 4 ft after midnight. Wave Detail: E 5 ft at 9 seconds,
becoming E 4 ft at 9 seconds.
.TUE...NW winds 5 to 10 kt. Seas 3 to 4 ft.
.TUE NIGHT...SW winds 5 kt. Seas 2 to 3 ft.
.WED...N winds 5 kt. Seas 2 to 3 ft.
.WED NIGHT...SE winds 5 kt. Seas 2 ft.
$$
AMZ374-140600-
Waters from Savannah GA to Altamaha Sound GA from 20 to 60 NM-
1219 PM EST Sat Dec 13 2025
...GALE WATCH IN EFFECT FROM SUNDAY AFTERNOON THROUGH MONDAY
MORNING...
.THIS AFTERNOON...SW winds 5 kt. Seas 2 ft. Wave Detail: SW
1 foot at 3 seconds and SE 1 foot at 8 seconds.
.TONIGHT...SW winds 5 to 10 kt, increasing to 10 to 15 kt after
midnight. Seas 2 to 3 ft. Wave Detail: SW 2 ft at 3 seconds and
SE 1 foot at 8 seconds.
.SUN...W winds 15 to 20 kt, becoming NW 20 to 25 kt with gusts to
30 kt in the afternoon. Seas 2 to 3 ft, building to 4 to 5 ft in
the afternoon. Wave Detail: SW 3 ft at 4 seconds and SE 2 ft at
8 seconds, becoming NW 5 ft at 4 seconds and SE 2 ft at
8 seconds.
.SUN NIGHT...N winds 25 to 30 kt. Seas 5 to 7 ft, building to
8 to 10 ft after midnight. Wave Detail: N 7 ft at 5 seconds and E
7 ft at 9 seconds, becoming N 9 ft at 7 seconds.
.MON...NE winds 20 to 25 kt with gusts to 30 kt, diminishing to
15 to 20 kt in the afternoon. Seas 8 to 10 ft, subsiding to 6 to
8 ft in the afternoon. Wave Detail: NE 9 ft at 8 seconds,
becoming NE 8 ft at 9 seconds. A chance of showers, mainly in the
morning.
.MON NIGHT...N winds 5 to 10 kt. Seas 5 to 7 ft, subsiding to
4 to 6 ft after midnight. Wave Detail: NE 6 ft at 9 seconds,
becoming NE 5 ft at 9 seconds.
.TUE...N winds 5 to 10 kt. Seas 4 to 5 ft.
.TUE NIGHT...W winds 5 kt. Seas 3 to 4 ft.
.WED...NW winds 5 to 10 kt. Seas 3 ft.
.WED NIGHT...SE winds 5 kt. Seas 2 to 3 ft. A slight chance of
showers.
$$
CWFCHS
Coastal Waters Forecast
National Weather Service Charleston SC
1219 PM EST Sat Dec 13 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
AMZ300-140600-
1219 PM EST Sat Dec 13 2025
.Synopsis for the coastal waters of south coastal South Carolina
and north coastal Georgia...
High pressure will prevail today, then an arctic cold front will
sweep through Sunday. Dry high pressure will then build overhead
for much of the coming week.
$$
AMZ330-140600-
Charleston Harbor-
1219 PM EST Sat Dec 13 2025
...SMALL CRAFT ADVISORY IN EFFECT FROM SUNDAY AFTERNOON THROUGH
MONDAY MORNING...
.THIS AFTERNOON...SW winds 5 kt.
.TONIGHT...SW winds 5 to 10 kt.
.SUN...W winds 10 kt, becoming N 15 to 20 kt with gusts to 25 kt
in the afternoon. Waves 1 to 2 ft. A chance of showers in the
morning.
.SUN NIGHT...N winds 15 to 20 kt with gusts to 30 kt. Waves 1 to
2 ft.
.MON...N winds 10 to 15 kt with gusts to 20 kt, diminishing to
5 to 10 kt in the afternoon.
.MON NIGHT...NW winds 5 kt.
.TUE...W winds 5 kt.
.TUE NIGHT...SW winds 5 kt.
.WED...W winds 5 kt.
.WED NIGHT...S winds 5 kt.
Unless otherwise noted, waves 1 foot or less.
Charleston Harbor water temperature 54 degrees.
$$
AMZ350-140600-
Waters from South Santee River to Edisto Beach SC out 20 NM-
1219 PM EST Sat Dec 13 2025
...GALE WATCH IN EFFECT FROM SUNDAY AFTERNOON THROUGH MONDAY
MORNING...
.THIS AFTERNOON...SW winds 5 to 10 kt. Seas 2 ft. Wave Detail: SW
1 foot at 4 seconds and SE 1 foot at 8 seconds.
.TONIGHT...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.
.SUN...W winds 15 to 20 kt with gusts to 25 kt, becoming N 25 to
30 kt in the afternoon. Seas 2 to 3 ft, building to 4 to 5 ft in
the afternoon. Wave Detail: SW 3 ft at 4 seconds and SE 1 foot at
8 seconds, becoming NW 4 ft at 4 seconds and SE 1 foot at
8 seconds. A chance of showers, mainly in the morning.
.SUN NIGHT...N winds 25 to 30 kt. Seas 4 to 6 ft, building to
5 to 7 ft after midnight. Wave Detail: NE 6 ft at 9 seconds and
NW 5 ft at 5 seconds, becoming NE 6 ft at 6 seconds.
.MON...N winds 20 to 25 kt, diminishing to 10 to 15 kt in the
afternoon. Seas 5 to 7 ft, subsiding to 4 to 6 ft in the
afternoon. Wave Detail: NE 6 ft at 8 seconds, becoming NE 6 ft at
9 seconds.
.MON NIGHT...NW winds 5 to 10 kt. Seas 4 to 5 ft, subsiding to
3 to 4 ft after midnight. Wave Detail: E 4 ft at 9 seconds.
.TUE...W winds 5 to 10 kt. Seas 2 to 3 ft.
.TUE NIGHT...W winds 5 kt. Seas 2 to 3 ft.
.WED...W winds 5 to 10 kt. Seas 2 ft.
.WED NIGHT...SW winds 5 kt. Seas 2 ft.
$$
AMZ352-140600-
Waters from Edisto Beach SC to Savannah GA out 20 NM-
1219 PM EST Sat Dec 13 2025
...GALE WATCH IN EFFECT FROM SUNDAY AFTERNOON THROUGH MONDAY
MORNING...
.THIS AFTERNOON...SW winds 5 to 10 kt. Seas 2 ft. Wave Detail: S
1 foot at 3 seconds and SE 1 foot at 8 seconds.
.TONIGHT...SW winds 5 to 10 kt, increasing to 10 to 15 kt after
midnight. Seas 2 ft. Wave Detail: SW 2 ft at 3 seconds and SE
1 foot at 8 seconds.
.SUN...W winds 10 to 15 kt, becoming N 20 to 25 kt in the
afternoon. Seas 2 to 3 ft, building to 3 to 4 ft in the
afternoon. Wave Detail: SW 2 ft at 4 seconds and SE 1 foot at
8 seconds, becoming NW 3 ft at 4 seconds and SE 1 foot at
8 seconds. A slight chance of showers in the morning.
.SUN NIGHT...N winds 25 to 30 kt. Seas 4 to 6 ft, building to
5 to 7 ft after midnight. Wave Detail: NE 6 ft at 8 seconds and N
4 ft at 4 seconds, becoming NE 6 ft at 6 seconds.
.MON...NE winds 20 to 25 kt, diminishing to 10 to 15 kt in the
afternoon. Seas 4 to 6 ft, subsiding to 4 to 5 ft in the
afternoon. Wave Detail: NE 6 ft at 7 seconds, becoming NE 5 ft at
9 seconds.
.MON NIGHT...N winds 5 kt. Seas 3 to 4 ft. Wave Detail: E 4 ft at
9 seconds.
.TUE...W winds 5 kt. Seas 2 to 3 ft.
.TUE NIGHT...SW winds 5 kt. Seas 2 to 3 ft.
.WED...W winds 5 kt. Seas 2 ft.
.WED NIGHT...SE winds 5 kt. Seas 2 ft.
$$
AMZ354-140600-
Waters from Savannah GA to Altamaha Sound GA out 20 NM, including
Grays Reef National Marine Sanctuary-
1219 PM EST Sat Dec 13 2025
...GALE WATCH IN EFFECT FROM SUNDAY AFTERNOON THROUGH MONDAY
MORNING...
.THIS AFTERNOON...SW winds 5 kt. Seas 1 foot or less. Wave
Detail: S 1 foot at 3 seconds and SE 1 foot at 8 seconds.
.TONIGHT...SW winds 5 to 10 kt. Seas 2 ft. Wave Detail: S 1 foot
at 3 seconds and SE 1 foot at 8 seconds.
.SUN...W winds 10 to 15 kt, becoming NW 20 to 25 kt in the
afternoon. Seas 2 ft, building to 3 to 4 ft in the afternoon.
Wave Detail: SW 2 ft at 3 seconds and SE 1 foot at 8 seconds,
becoming NW 3 ft at 4 seconds and SE 1 foot at 8 seconds.
.SUN NIGHT...N winds 25 to 30 kt. Seas 4 to 6 ft, building to
5 to 7 ft after midnight. Wave Detail: NE 6 ft at 8 seconds and N
5 ft at 4 seconds, becoming NE 7 ft at 6 seconds.
.MON...NE winds 20 to 25 kt with gusts to 30 kt, diminishing to
15 to 20 kt in the afternoon. Seas 5 to 7 ft, subsiding to 4 to
6 ft in the afternoon. Wave Detail: NE 7 ft at 7 seconds,
becoming NE 6 ft at 9 seconds.
.MON NIGHT...N winds 5 to 10 kt. Seas 4 to 5 ft, subsiding to
3 to 4 ft after midnight. Wave Detail: E 5 ft at 9 seconds,
becoming E 4 ft at 9 seconds.
.TUE...NW winds 5 to 10 kt. Seas 3 to 4 ft.
.TUE NIGHT...SW winds 5 kt. Seas 2 to 3 ft.
.WED...N winds 5 kt. Seas 2 to 3 ft.
.WED NIGHT...SE winds 5 kt. Seas 2 ft.
$$
AMZ374-140600-
Waters from Savannah GA to Altamaha Sound GA from 20 to 60 NM-
1219 PM EST Sat Dec 13 2025
...GALE WATCH IN EFFECT FROM SUNDAY AFTERNOON THROUGH MONDAY
MORNING...
.THIS AFTERNOON...SW winds 5 kt. Seas 2 ft. Wave Detail: SW
1 foot at 3 seconds and SE 1 foot at 8 seconds.
.TONIGHT...SW winds 5 to 10 kt, increasing to 10 to 15 kt after
midnight. Seas 2 to 3 ft. Wave Detail: SW 2 ft at 3 seconds and
SE 1 foot at 8 seconds.
.SUN...W winds 15 to 20 kt, becoming NW 20 to 25 kt with gusts to
30 kt in the afternoon. Seas 2 to 3 ft, building to 4 to 5 ft in
the afternoon. Wave Detail: SW 3 ft at 4 seconds and SE 2 ft at
8 seconds, becoming NW 5 ft at 4 seconds and SE 2 ft at
8 seconds.
.SUN NIGHT...N winds 25 to 30 kt. Seas 5 to 7 ft, building to
8 to 10 ft after midnight. Wave Detail: N 7 ft at 5 seconds and E
7 ft at 9 seconds, becoming N 9 ft at 7 seconds.
.MON...NE winds 20 to 25 kt with gusts to 30 kt, diminishing to
15 to 20 kt in the afternoon. Seas 8 to 10 ft, subsiding to 6 to
8 ft in the afternoon. Wave Detail: NE 9 ft at 8 seconds,
becoming NE 8 ft at 9 seconds. A chance of showers, mainly in the
morning.
.MON NIGHT...N winds 5 to 10 kt. Seas 5 to 7 ft, subsiding to
4 to 6 ft after midnight. Wave Detail: NE 6 ft at 9 seconds,
becoming NE 5 ft at 9 seconds.
.TUE...N winds 5 to 10 kt. Seas 4 to 5 ft.
.TUE NIGHT...W winds 5 kt. Seas 3 to 4 ft.
.WED...NW winds 5 to 10 kt. Seas 3 ft.
.WED NIGHT...SE winds 5 kt. Seas 2 to 3 ft. A slight chance of
showers.
$$