FZUS52 KCHS 151147
CWFCHS
Coastal Waters Forecast
National Weather Service Charleston SC
647 AM EST Mon Dec 15 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
AMZ300-160030-
647 AM EST Mon Dec 15 2025
.Synopsis for the coastal waters of south coastal South Carolina
and north coastal Georgia...
Bitter cold conditions will prevail today through Tuesday. Dry
high pressure remains in control through Thursday before the next
cold front impacts the area Friday.
$$
AMZ330-160030-
Charleston Harbor-
647 AM EST Mon Dec 15 2025
.TODAY...N winds 10 to 15 kt with gusts to 20 kt, diminishing to
10 kt late this morning.
.TONIGHT...N winds 5 kt.
.TUE...NW winds 5 kt, becoming SW in the afternoon.
.TUE NIGHT...SW winds 5 kt.
.WED...W winds 5 kt.
.WED NIGHT...E winds 5 kt.
.THU...SE winds 5 kt. A chance of showers.
.THU NIGHT...SW winds 5 to 10 kt. A chance of showers.
.FRI...NW winds 5 to 10 kt.
.FRI NIGHT...NE winds 5 to 10 kt.
Unless otherwise noted, waves 1 foot or less.
Charleston Harbor water temperature 54 degrees.
$$
AMZ350-160030-
Waters from South Santee River to Edisto Beach SC out 20 NM-
647 AM EST Mon Dec 15 2025
...SMALL CRAFT ADVISORY IN EFFECT UNTIL 1 PM EST THIS AFTERNOON...
.TODAY...N winds 20 to 25 kt with gusts to 30 kt, diminishing to
10 to 15 kt this afternoon. Seas 5 to 7 ft, subsiding to 4 to 6 ft
this afternoon. Wave Detail: NE 7 ft at 7 seconds and SE 1 foot
at 10 seconds, becoming E 5 ft at 9 seconds.
.TONIGHT...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 10 seconds, becoming
E 4 ft at 10 seconds.
.TUE...NW winds 5 to 10 kt, becoming W in the afternoon. Seas
3 to 4 ft, subsiding to 2 to 3 ft in the afternoon. Wave Detail:
E 3 ft at 10 seconds.
.TUE NIGHT...SW winds 5 kt. Seas 2 to 3 ft. Wave Detail: E 3 ft
at 9 seconds.
.WED...W winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: SE 3 ft
at 9 seconds.
.WED NIGHT...E winds 5 kt. Seas 2 to 3 ft. Wave Detail: SE 2 ft
at 10 seconds. A slight chance of showers after midnight.
.THU...SE winds 5 to 10 kt. Seas 2 to 3 ft. A chance of showers.
.THU NIGHT...SW winds 15 to 20 kt. Seas 3 to 4 ft. A chance of
showers.
.FRI...NW winds 15 to 20 kt. Seas 4 to 5 ft.
.FRI NIGHT...NE winds 10 to 15 kt. Seas 3 to 4 ft.
$$
AMZ352-160030-
Waters from Edisto Beach SC to Savannah GA out 20 NM-
647 AM EST Mon Dec 15 2025
...SMALL CRAFT ADVISORY IN EFFECT UNTIL 1 PM EST THIS AFTERNOON...
.TODAY...NE winds 20 to 25 kt with gusts to 30 kt, diminishing to
10 to 15 kt with gusts to 20 kt. Seas 4 to 6 ft, subsiding to 4
to 5 ft this afternoon. Wave Detail: NE 6 ft at 7 seconds and SE 1
foot at 10 seconds, becoming NE 5 ft at 8 seconds.
.TONIGHT...N winds 5 to 10 kt. Seas 3 to 4 ft. Wave Detail: E
4 ft at 10 seconds.
.TUE...NW winds 5 kt, becoming W in the afternoon. Seas 3 to
4 ft, subsiding to 2 to 3 ft in the afternoon. Wave Detail: E
3 ft at 9 seconds.
.TUE NIGHT...W winds 5 kt. Seas 2 to 3 ft. Wave Detail: E 3 ft at
9 seconds.
.WED...N winds 5 kt. Seas 2 to 3 ft. Wave Detail: SE 3 ft at
10 seconds.
.WED NIGHT...E winds 5 kt. Seas 2 to 3 ft. Wave Detail: SE 3 ft
at 10 seconds. A slight chance of showers after midnight.
.THU...SE winds 5 kt. Seas 2 to 3 ft. A chance of showers.
.THU NIGHT...SW winds 10 to 15 kt. Seas 3 to 4 ft. A chance of
showers.
.FRI...NW winds 10 to 15 kt. Seas 3 to 4 ft.
.FRI NIGHT...NE winds 10 to 15 kt. Seas 3 ft.
$$
AMZ354-160030-
Waters from Savannah GA to Altamaha Sound GA out 20 NM, including
Grays Reef National Marine Sanctuary-
647 AM EST Mon Dec 15 2025
...SMALL CRAFT ADVISORY IN EFFECT UNTIL 1 PM EST THIS AFTERNOON...
.TODAY...NE winds 20 to 25 kt with gusts to 30 kt, diminishing to
10 to 15 kt with gusts to 20 kt. Seas 5 to 7 ft, subsiding to
4 to 6 ft this afternoon. Wave Detail: NE 7 ft at 7 seconds and
SE 1 foot at 10 seconds, becoming NE 6 ft at 8 seconds.
.TONIGHT...NE winds 10 to 15 kt, becoming N 5 to 10 kt after
midnight. 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...N winds 5 to 10 kt. Seas 3 to 4 ft. Wave Detail: E 4 ft at
9 seconds.
.TUE NIGHT...Variable winds 5 kt. Seas 2 to 3 ft. Wave Detail: E
3 ft at 9 seconds.
.WED...N winds 5 kt. Seas 2 to 3 ft. Wave Detail: E 3 ft at
10 seconds.
.WED NIGHT...E winds 5 kt. Seas 2 to 3 ft. Wave Detail: E 3 ft at
10 seconds. A slight chance of showers after midnight.
.THU...SE winds 5 to 10 kt. Seas 2 to 3 ft. A chance of showers.
.THU NIGHT...SW winds 10 to 15 kt. Seas 3 ft. A chance of
showers.
.FRI...NW winds 10 to 15 kt. Seas 3 to 4 ft.
.FRI NIGHT...NE winds 10 to 15 kt. Seas 3 ft.
$$
AMZ374-160030-
Waters from Savannah GA to Altamaha Sound GA from 20 to 60 NM-
647 AM EST Mon Dec 15 2025
...SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE TONIGHT...
.TODAY...NE winds 20 to 25 kt with gusts to 30 kt, diminishing to
15 to 20 kt with gusts to 25 kt this afternoon. Seas 8 to 10 ft,
subsiding to 7 to 9 ft this afternoon. Wave Detail: NE 9 ft at
8 seconds and SE 1 foot at 10 seconds, becoming NE 8 ft at
8 seconds and E 7 ft at 10 seconds.
.TONIGHT...NE winds 10 to 15 kt, becoming N 5 to 10 kt after
midnight. Seas 5 to 7 ft, subsiding to 4 to 6 ft after midnight.
Wave Detail: NE 7 ft at 9 seconds, becoming NE 5 ft at 9 seconds.
.TUE...N winds 5 to 10 kt. Seas 4 to 5 ft. Wave Detail: NE 5 ft
at 10 seconds.
.TUE NIGHT...Variable winds 5 kt. Seas 3 to 4 ft. Wave Detail: E
4 ft at 9 seconds.
.WED...N winds 5 to 10 kt. Seas 3 ft. Wave Detail: E 3 ft at
9 seconds. A slight chance of showers in the afternoon.
.WED NIGHT...E winds 5 to 10 kt. Seas 3 ft. Wave Detail: SE 3 ft
at 10 seconds and NE 2 ft at 8 seconds. A slight chance of
showers.
.THU...SE winds 5 to 10 kt. Seas 3 to 4 ft. A chance of showers.
.THU NIGHT...SW winds 10 to 15 kt. Seas 4 to 5 ft. A chance of
showers.
.FRI...NW winds 10 to 15 kt. Seas 4 to 5 ft. A slight chance of
showers.
.FRI NIGHT...NE winds 10 to 15 kt. Seas 3 to 4 ft.
$$
CWFCHS
Coastal Waters Forecast
National Weather Service Charleston SC
647 AM EST Mon Dec 15 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
AMZ300-160030-
647 AM EST Mon Dec 15 2025
.Synopsis for the coastal waters of south coastal South Carolina
and north coastal Georgia...
Bitter cold conditions will prevail today through Tuesday. Dry
high pressure remains in control through Thursday before the next
cold front impacts the area Friday.
$$
AMZ330-160030-
Charleston Harbor-
647 AM EST Mon Dec 15 2025
.TODAY...N winds 10 to 15 kt with gusts to 20 kt, diminishing to
10 kt late this morning.
.TONIGHT...N winds 5 kt.
.TUE...NW winds 5 kt, becoming SW in the afternoon.
.TUE NIGHT...SW winds 5 kt.
.WED...W winds 5 kt.
.WED NIGHT...E winds 5 kt.
.THU...SE winds 5 kt. A chance of showers.
.THU NIGHT...SW winds 5 to 10 kt. A chance of showers.
.FRI...NW winds 5 to 10 kt.
.FRI NIGHT...NE winds 5 to 10 kt.
Unless otherwise noted, waves 1 foot or less.
Charleston Harbor water temperature 54 degrees.
$$
AMZ350-160030-
Waters from South Santee River to Edisto Beach SC out 20 NM-
647 AM EST Mon Dec 15 2025
...SMALL CRAFT ADVISORY IN EFFECT UNTIL 1 PM EST THIS AFTERNOON...
.TODAY...N winds 20 to 25 kt with gusts to 30 kt, diminishing to
10 to 15 kt this afternoon. Seas 5 to 7 ft, subsiding to 4 to 6 ft
this afternoon. Wave Detail: NE 7 ft at 7 seconds and SE 1 foot
at 10 seconds, becoming E 5 ft at 9 seconds.
.TONIGHT...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 10 seconds, becoming
E 4 ft at 10 seconds.
.TUE...NW winds 5 to 10 kt, becoming W in the afternoon. Seas
3 to 4 ft, subsiding to 2 to 3 ft in the afternoon. Wave Detail:
E 3 ft at 10 seconds.
.TUE NIGHT...SW winds 5 kt. Seas 2 to 3 ft. Wave Detail: E 3 ft
at 9 seconds.
.WED...W winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: SE 3 ft
at 9 seconds.
.WED NIGHT...E winds 5 kt. Seas 2 to 3 ft. Wave Detail: SE 2 ft
at 10 seconds. A slight chance of showers after midnight.
.THU...SE winds 5 to 10 kt. Seas 2 to 3 ft. A chance of showers.
.THU NIGHT...SW winds 15 to 20 kt. Seas 3 to 4 ft. A chance of
showers.
.FRI...NW winds 15 to 20 kt. Seas 4 to 5 ft.
.FRI NIGHT...NE winds 10 to 15 kt. Seas 3 to 4 ft.
$$
AMZ352-160030-
Waters from Edisto Beach SC to Savannah GA out 20 NM-
647 AM EST Mon Dec 15 2025
...SMALL CRAFT ADVISORY IN EFFECT UNTIL 1 PM EST THIS AFTERNOON...
.TODAY...NE winds 20 to 25 kt with gusts to 30 kt, diminishing to
10 to 15 kt with gusts to 20 kt. Seas 4 to 6 ft, subsiding to 4
to 5 ft this afternoon. Wave Detail: NE 6 ft at 7 seconds and SE 1
foot at 10 seconds, becoming NE 5 ft at 8 seconds.
.TONIGHT...N winds 5 to 10 kt. Seas 3 to 4 ft. Wave Detail: E
4 ft at 10 seconds.
.TUE...NW winds 5 kt, becoming W in the afternoon. Seas 3 to
4 ft, subsiding to 2 to 3 ft in the afternoon. Wave Detail: E
3 ft at 9 seconds.
.TUE NIGHT...W winds 5 kt. Seas 2 to 3 ft. Wave Detail: E 3 ft at
9 seconds.
.WED...N winds 5 kt. Seas 2 to 3 ft. Wave Detail: SE 3 ft at
10 seconds.
.WED NIGHT...E winds 5 kt. Seas 2 to 3 ft. Wave Detail: SE 3 ft
at 10 seconds. A slight chance of showers after midnight.
.THU...SE winds 5 kt. Seas 2 to 3 ft. A chance of showers.
.THU NIGHT...SW winds 10 to 15 kt. Seas 3 to 4 ft. A chance of
showers.
.FRI...NW winds 10 to 15 kt. Seas 3 to 4 ft.
.FRI NIGHT...NE winds 10 to 15 kt. Seas 3 ft.
$$
AMZ354-160030-
Waters from Savannah GA to Altamaha Sound GA out 20 NM, including
Grays Reef National Marine Sanctuary-
647 AM EST Mon Dec 15 2025
...SMALL CRAFT ADVISORY IN EFFECT UNTIL 1 PM EST THIS AFTERNOON...
.TODAY...NE winds 20 to 25 kt with gusts to 30 kt, diminishing to
10 to 15 kt with gusts to 20 kt. Seas 5 to 7 ft, subsiding to
4 to 6 ft this afternoon. Wave Detail: NE 7 ft at 7 seconds and
SE 1 foot at 10 seconds, becoming NE 6 ft at 8 seconds.
.TONIGHT...NE winds 10 to 15 kt, becoming N 5 to 10 kt after
midnight. 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...N winds 5 to 10 kt. Seas 3 to 4 ft. Wave Detail: E 4 ft at
9 seconds.
.TUE NIGHT...Variable winds 5 kt. Seas 2 to 3 ft. Wave Detail: E
3 ft at 9 seconds.
.WED...N winds 5 kt. Seas 2 to 3 ft. Wave Detail: E 3 ft at
10 seconds.
.WED NIGHT...E winds 5 kt. Seas 2 to 3 ft. Wave Detail: E 3 ft at
10 seconds. A slight chance of showers after midnight.
.THU...SE winds 5 to 10 kt. Seas 2 to 3 ft. A chance of showers.
.THU NIGHT...SW winds 10 to 15 kt. Seas 3 ft. A chance of
showers.
.FRI...NW winds 10 to 15 kt. Seas 3 to 4 ft.
.FRI NIGHT...NE winds 10 to 15 kt. Seas 3 ft.
$$
AMZ374-160030-
Waters from Savannah GA to Altamaha Sound GA from 20 to 60 NM-
647 AM EST Mon Dec 15 2025
...SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE TONIGHT...
.TODAY...NE winds 20 to 25 kt with gusts to 30 kt, diminishing to
15 to 20 kt with gusts to 25 kt this afternoon. Seas 8 to 10 ft,
subsiding to 7 to 9 ft this afternoon. Wave Detail: NE 9 ft at
8 seconds and SE 1 foot at 10 seconds, becoming NE 8 ft at
8 seconds and E 7 ft at 10 seconds.
.TONIGHT...NE winds 10 to 15 kt, becoming N 5 to 10 kt after
midnight. Seas 5 to 7 ft, subsiding to 4 to 6 ft after midnight.
Wave Detail: NE 7 ft at 9 seconds, becoming NE 5 ft at 9 seconds.
.TUE...N winds 5 to 10 kt. Seas 4 to 5 ft. Wave Detail: NE 5 ft
at 10 seconds.
.TUE NIGHT...Variable winds 5 kt. Seas 3 to 4 ft. Wave Detail: E
4 ft at 9 seconds.
.WED...N winds 5 to 10 kt. Seas 3 ft. Wave Detail: E 3 ft at
9 seconds. A slight chance of showers in the afternoon.
.WED NIGHT...E winds 5 to 10 kt. Seas 3 ft. Wave Detail: SE 3 ft
at 10 seconds and NE 2 ft at 8 seconds. A slight chance of
showers.
.THU...SE winds 5 to 10 kt. Seas 3 to 4 ft. A chance of showers.
.THU NIGHT...SW winds 10 to 15 kt. Seas 4 to 5 ft. A chance of
showers.
.FRI...NW winds 10 to 15 kt. Seas 4 to 5 ft. A slight chance of
showers.
.FRI NIGHT...NE winds 10 to 15 kt. Seas 3 to 4 ft.
$$