FZUS52 KCHS 192334
CWFCHS
Coastal Waters Forecast
National Weather Service Charleston SC
634 PM EST Fri Dec 19 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
AMZ300-201215-
634 PM EST Fri Dec 19 2025
.Synopsis for the coastal waters of south coastal South Carolina
and north coastal Georgia...
High pressure will prevail over the weekend, with another cold
front forecast to impact the area Monday.
$$
AMZ330-201215-
Charleston Harbor-
634 PM EST Fri Dec 19 2025
.TONIGHT...NW winds 10 to 15 kt with gusts to 20 kt, becoming N
5 to 10 kt after midnight.
.SAT...NE winds 5 to 10 kt.
.SAT NIGHT...NE winds 5 kt, becoming NW after midnight.
.SUN...NW winds 5 kt.
.SUN NIGHT...N winds 5 to 10 kt, becoming NE 10 to 15 kt with
gusts to 20 kt after midnight.
.MON...NE winds 10 to 15 kt with gusts to 20 kt.
.MON NIGHT...NE winds 5 to 10 kt.
.TUE...SE winds 5 kt.
.TUE NIGHT...W winds 5 kt.
.WED...W winds 5 kt.
.WED NIGHT...E winds 5 kt.
Unless otherwise noted, waves 1 foot or less.
Charleston Harbor water temperature 54 degrees.
$$
AMZ350-201215-
Waters from South Santee River to Edisto Beach SC out 20 NM-
634 PM EST Fri Dec 19 2025
.TONIGHT...NW winds 10 to 15 kt, becoming N late. Seas 4 to 5 ft,
subsiding to 3 to 4 ft after midnight. Wave Detail: SE 5 ft at
9 seconds and SW 3 ft at 6 seconds, becoming SE 4 ft at 9 seconds
and SW 2 ft at 5 seconds.
.SAT...NE winds 5 to 10 kt. Seas 3 to 4 ft. Wave Detail: SE 3 ft
at 9 seconds and NE 1 foot at 3 seconds.
.SAT NIGHT...NE winds 5 to 10 kt, becoming NW after midnight.
Seas 3 ft. Wave Detail: SE 3 ft at 9 seconds and NE 1 foot at
4 seconds.
.SUN...NW winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: SE 3 ft
at 9 seconds and NE 1 foot at 4 seconds.
.SUN NIGHT...N winds 15 to 20 kt, becoming NE 20 to 25 kt after
midnight. Seas 3 to 4 ft, building to 4 to 6 ft after midnight.
Wave Detail: SE 3 ft at 11 seconds and NE 2 ft at 4 seconds,
becoming NE 5 ft at 5 seconds and SE 3 ft at 11 seconds.
.MON...NE winds 20 kt with gusts to 25 kt. Seas 5 to 7 ft. Wave
Detail: E 6 ft at 10 seconds and NE 5 ft at 6 seconds.
.MON NIGHT...NE winds 15 to 20 kt, diminishing to 10 to 15 kt
after midnight. Seas 5 to 7 ft, subsiding to 4 to 6 ft after
midnight.
.TUE...S winds 5 to 10 kt. Seas 4 to 5 ft.
.TUE NIGHT...W winds 5 to 10 kt. Seas 3 to 4 ft.
.WED...NW winds 5 to 10 kt. Seas 3 ft.
.WED NIGHT...E winds 5 kt. Seas 3 ft.
$$
AMZ352-201215-
Waters from Edisto Beach SC to Savannah GA out 20 NM-
634 PM EST Fri Dec 19 2025
.TONIGHT...NW winds 10 to 15 kt, becoming N late. Seas 3 to 4 ft.
Wave Detail: SE 4 ft at 9 seconds and W 2 ft at 4 seconds.
.SAT...NE winds 5 to 10 kt. Seas 3 ft. Wave Detail: SE 3 ft at
9 seconds and NE 1 foot at 3 seconds.
.SAT NIGHT...Variable winds 5 kt. Seas 3 ft. Wave Detail: SE 3 ft
at 9 seconds and NE 1 foot at 3 seconds.
.SUN...NW winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: SE 3 ft
at 9 seconds.
.SUN NIGHT...N winds 10 to 15 kt, becoming NE 15 to 20 kt after
midnight. Seas 2 to 3 ft, building to 4 to 5 ft after midnight.
Wave Detail: E 3 ft at 8 seconds, becoming NE 5 ft at 5 seconds
and SE 2 ft at 11 seconds.
.MON...NE winds 20 kt with gusts to 25 kt. Seas 4 to 6 ft,
building to 5 to 6 ft in the afternoon. Wave Detail: NE 5 ft at
6 seconds and E 2 ft at 11 seconds, becoming E 6 ft at 7 seconds.
.MON NIGHT...NE winds 15 to 20 kt, diminishing to 5 to 10 kt
after midnight. Seas 5 to 6 ft, subsiding to 4 to 5 ft after
midnight.
.TUE...SE winds 5 kt. Seas 4 to 5 ft.
.TUE NIGHT...SW winds 5 kt. Seas 3 to 4 ft.
.WED...W winds 5 kt. Seas 3 to 4 ft.
.WED NIGHT...S winds 5 kt. Seas 3 ft.
$$
AMZ354-201215-
Waters from Savannah GA to Altamaha Sound GA out 20 NM, including
Grays Reef National Marine Sanctuary-
634 PM EST Fri Dec 19 2025
.TONIGHT...NW winds 10 to 15 kt, becoming N late. Seas 3 to 4 ft,
subsiding to 2 to 3 ft after midnight. Wave Detail: SE 4 ft at
9 seconds and NW 2 ft at 3 seconds, becoming SE 3 ft at 9 seconds
and NW 2 ft at 3 seconds.
.SAT...NE winds 5 to 10 kt. Seas 3 to 4 ft. Wave Detail: SE 3 ft
at 9 seconds and N 1 foot at 3 seconds.
.SAT NIGHT...NE winds 5 kt, becoming NW after midnight. Seas 2 to
3 ft. Wave Detail: SE 3 ft at 9 seconds and NE 1 foot at
3 seconds.
.SUN...NW winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: E 3 ft
at 9 seconds.
.SUN NIGHT...NE winds 10 to 15 kt, increasing to 20 to 25 kt
after midnight. Seas 2 to 3 ft, building to 4 to 5 ft after
midnight. Wave Detail: E 3 ft at 9 seconds, becoming NE 5 ft at
5 seconds and E 2 ft at 9 seconds.
.MON...NE winds 20 to 25 kt. Seas 4 to 6 ft, building to 5 to
6 ft in the afternoon. Wave Detail: NE 6 ft at 6 seconds and E
2 ft at 11 seconds, becoming NE 6 ft at 6 seconds and E 6 ft at
11 seconds.
.MON NIGHT...NE winds 15 to 20 kt with gusts to 25 kt,
diminishing to 10 to 15 kt after midnight. Seas 5 to 6 ft,
subsiding to 4 to 5 ft after midnight.
.TUE...E winds 5 to 10 kt. Seas 4 to 5 ft.
.TUE NIGHT...SW winds 5 kt. Seas 4 to 5 ft.
.WED...NW winds 5 kt. Seas 3 to 4 ft.
.WED NIGHT...SW winds 5 kt. Seas 3 ft.
$$
AMZ374-201215-
Waters from Savannah GA to Altamaha Sound GA from 20 to 60 NM-
634 PM EST Fri Dec 19 2025
.TONIGHT...NW winds 15 to 20 kt, becoming N 10 to 15 kt after
midnight. Seas 4 to 5 ft. Wave Detail: W 4 ft at 4 seconds and SE
4 ft at 9 seconds.
.SAT...NE winds 5 to 10 kt. Seas 3 to 4 ft. Wave Detail: SE 4 ft
at 9 seconds and N 2 ft at 4 seconds.
.SAT NIGHT...NW winds 5 kt. Seas 3 to 4 ft. Wave Detail: SE 4 ft
at 9 seconds and NE 1 foot at 3 seconds.
.SUN...NW winds 5 to 10 kt. Seas 3 ft. Wave Detail: E 3 ft at
9 seconds.
.SUN NIGHT...N winds 15 to 20 kt, becoming NE 20 to 25 kt after
midnight. Seas 3 to 4 ft, building to 5 to 7 ft after midnight.
Wave Detail: NE 3 ft at 4 seconds and E 3 ft at 9 seconds,
becoming NE 6 ft at 5 seconds and E 3 ft at 11 seconds.
.MON...NE winds 20 to 25 kt. Seas 6 to 8 ft. Wave Detail: NE 7 ft
at 6 seconds and E 7 ft at 11 seconds. A slight chance of rain in
the afternoon.
.MON NIGHT...NE winds 15 to 20 kt, becoming E 10 to 15 kt after
midnight. Seas 6 to 7 ft. A slight chance of rain in the evening.
.TUE...SE winds 5 to 10 kt. Seas 5 to 7 ft.
.TUE NIGHT...SW winds 5 to 10 kt. Seas 4 to 6 ft.
.WED...NW winds 5 to 10 kt. Seas 4 to 5 ft.
.WED NIGHT...SW winds 5 kt. Seas 3 to 4 ft.
$$
CWFCHS
Coastal Waters Forecast
National Weather Service Charleston SC
634 PM EST Fri Dec 19 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
AMZ300-201215-
634 PM EST Fri Dec 19 2025
.Synopsis for the coastal waters of south coastal South Carolina
and north coastal Georgia...
High pressure will prevail over the weekend, with another cold
front forecast to impact the area Monday.
$$
AMZ330-201215-
Charleston Harbor-
634 PM EST Fri Dec 19 2025
.TONIGHT...NW winds 10 to 15 kt with gusts to 20 kt, becoming N
5 to 10 kt after midnight.
.SAT...NE winds 5 to 10 kt.
.SAT NIGHT...NE winds 5 kt, becoming NW after midnight.
.SUN...NW winds 5 kt.
.SUN NIGHT...N winds 5 to 10 kt, becoming NE 10 to 15 kt with
gusts to 20 kt after midnight.
.MON...NE winds 10 to 15 kt with gusts to 20 kt.
.MON NIGHT...NE winds 5 to 10 kt.
.TUE...SE winds 5 kt.
.TUE NIGHT...W winds 5 kt.
.WED...W winds 5 kt.
.WED NIGHT...E winds 5 kt.
Unless otherwise noted, waves 1 foot or less.
Charleston Harbor water temperature 54 degrees.
$$
AMZ350-201215-
Waters from South Santee River to Edisto Beach SC out 20 NM-
634 PM EST Fri Dec 19 2025
.TONIGHT...NW winds 10 to 15 kt, becoming N late. Seas 4 to 5 ft,
subsiding to 3 to 4 ft after midnight. Wave Detail: SE 5 ft at
9 seconds and SW 3 ft at 6 seconds, becoming SE 4 ft at 9 seconds
and SW 2 ft at 5 seconds.
.SAT...NE winds 5 to 10 kt. Seas 3 to 4 ft. Wave Detail: SE 3 ft
at 9 seconds and NE 1 foot at 3 seconds.
.SAT NIGHT...NE winds 5 to 10 kt, becoming NW after midnight.
Seas 3 ft. Wave Detail: SE 3 ft at 9 seconds and NE 1 foot at
4 seconds.
.SUN...NW winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: SE 3 ft
at 9 seconds and NE 1 foot at 4 seconds.
.SUN NIGHT...N winds 15 to 20 kt, becoming NE 20 to 25 kt after
midnight. Seas 3 to 4 ft, building to 4 to 6 ft after midnight.
Wave Detail: SE 3 ft at 11 seconds and NE 2 ft at 4 seconds,
becoming NE 5 ft at 5 seconds and SE 3 ft at 11 seconds.
.MON...NE winds 20 kt with gusts to 25 kt. Seas 5 to 7 ft. Wave
Detail: E 6 ft at 10 seconds and NE 5 ft at 6 seconds.
.MON NIGHT...NE winds 15 to 20 kt, diminishing to 10 to 15 kt
after midnight. Seas 5 to 7 ft, subsiding to 4 to 6 ft after
midnight.
.TUE...S winds 5 to 10 kt. Seas 4 to 5 ft.
.TUE NIGHT...W winds 5 to 10 kt. Seas 3 to 4 ft.
.WED...NW winds 5 to 10 kt. Seas 3 ft.
.WED NIGHT...E winds 5 kt. Seas 3 ft.
$$
AMZ352-201215-
Waters from Edisto Beach SC to Savannah GA out 20 NM-
634 PM EST Fri Dec 19 2025
.TONIGHT...NW winds 10 to 15 kt, becoming N late. Seas 3 to 4 ft.
Wave Detail: SE 4 ft at 9 seconds and W 2 ft at 4 seconds.
.SAT...NE winds 5 to 10 kt. Seas 3 ft. Wave Detail: SE 3 ft at
9 seconds and NE 1 foot at 3 seconds.
.SAT NIGHT...Variable winds 5 kt. Seas 3 ft. Wave Detail: SE 3 ft
at 9 seconds and NE 1 foot at 3 seconds.
.SUN...NW winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: SE 3 ft
at 9 seconds.
.SUN NIGHT...N winds 10 to 15 kt, becoming NE 15 to 20 kt after
midnight. Seas 2 to 3 ft, building to 4 to 5 ft after midnight.
Wave Detail: E 3 ft at 8 seconds, becoming NE 5 ft at 5 seconds
and SE 2 ft at 11 seconds.
.MON...NE winds 20 kt with gusts to 25 kt. Seas 4 to 6 ft,
building to 5 to 6 ft in the afternoon. Wave Detail: NE 5 ft at
6 seconds and E 2 ft at 11 seconds, becoming E 6 ft at 7 seconds.
.MON NIGHT...NE winds 15 to 20 kt, diminishing to 5 to 10 kt
after midnight. Seas 5 to 6 ft, subsiding to 4 to 5 ft after
midnight.
.TUE...SE winds 5 kt. Seas 4 to 5 ft.
.TUE NIGHT...SW winds 5 kt. Seas 3 to 4 ft.
.WED...W winds 5 kt. Seas 3 to 4 ft.
.WED NIGHT...S winds 5 kt. Seas 3 ft.
$$
AMZ354-201215-
Waters from Savannah GA to Altamaha Sound GA out 20 NM, including
Grays Reef National Marine Sanctuary-
634 PM EST Fri Dec 19 2025
.TONIGHT...NW winds 10 to 15 kt, becoming N late. Seas 3 to 4 ft,
subsiding to 2 to 3 ft after midnight. Wave Detail: SE 4 ft at
9 seconds and NW 2 ft at 3 seconds, becoming SE 3 ft at 9 seconds
and NW 2 ft at 3 seconds.
.SAT...NE winds 5 to 10 kt. Seas 3 to 4 ft. Wave Detail: SE 3 ft
at 9 seconds and N 1 foot at 3 seconds.
.SAT NIGHT...NE winds 5 kt, becoming NW after midnight. Seas 2 to
3 ft. Wave Detail: SE 3 ft at 9 seconds and NE 1 foot at
3 seconds.
.SUN...NW winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: E 3 ft
at 9 seconds.
.SUN NIGHT...NE winds 10 to 15 kt, increasing to 20 to 25 kt
after midnight. Seas 2 to 3 ft, building to 4 to 5 ft after
midnight. Wave Detail: E 3 ft at 9 seconds, becoming NE 5 ft at
5 seconds and E 2 ft at 9 seconds.
.MON...NE winds 20 to 25 kt. Seas 4 to 6 ft, building to 5 to
6 ft in the afternoon. Wave Detail: NE 6 ft at 6 seconds and E
2 ft at 11 seconds, becoming NE 6 ft at 6 seconds and E 6 ft at
11 seconds.
.MON NIGHT...NE winds 15 to 20 kt with gusts to 25 kt,
diminishing to 10 to 15 kt after midnight. Seas 5 to 6 ft,
subsiding to 4 to 5 ft after midnight.
.TUE...E winds 5 to 10 kt. Seas 4 to 5 ft.
.TUE NIGHT...SW winds 5 kt. Seas 4 to 5 ft.
.WED...NW winds 5 kt. Seas 3 to 4 ft.
.WED NIGHT...SW winds 5 kt. Seas 3 ft.
$$
AMZ374-201215-
Waters from Savannah GA to Altamaha Sound GA from 20 to 60 NM-
634 PM EST Fri Dec 19 2025
.TONIGHT...NW winds 15 to 20 kt, becoming N 10 to 15 kt after
midnight. Seas 4 to 5 ft. Wave Detail: W 4 ft at 4 seconds and SE
4 ft at 9 seconds.
.SAT...NE winds 5 to 10 kt. Seas 3 to 4 ft. Wave Detail: SE 4 ft
at 9 seconds and N 2 ft at 4 seconds.
.SAT NIGHT...NW winds 5 kt. Seas 3 to 4 ft. Wave Detail: SE 4 ft
at 9 seconds and NE 1 foot at 3 seconds.
.SUN...NW winds 5 to 10 kt. Seas 3 ft. Wave Detail: E 3 ft at
9 seconds.
.SUN NIGHT...N winds 15 to 20 kt, becoming NE 20 to 25 kt after
midnight. Seas 3 to 4 ft, building to 5 to 7 ft after midnight.
Wave Detail: NE 3 ft at 4 seconds and E 3 ft at 9 seconds,
becoming NE 6 ft at 5 seconds and E 3 ft at 11 seconds.
.MON...NE winds 20 to 25 kt. Seas 6 to 8 ft. Wave Detail: NE 7 ft
at 6 seconds and E 7 ft at 11 seconds. A slight chance of rain in
the afternoon.
.MON NIGHT...NE winds 15 to 20 kt, becoming E 10 to 15 kt after
midnight. Seas 6 to 7 ft. A slight chance of rain in the evening.
.TUE...SE winds 5 to 10 kt. Seas 5 to 7 ft.
.TUE NIGHT...SW winds 5 to 10 kt. Seas 4 to 6 ft.
.WED...NW winds 5 to 10 kt. Seas 4 to 5 ft.
.WED NIGHT...SW winds 5 kt. Seas 3 to 4 ft.
$$