FZUS52 KCHS 292320
CWFCHS
Coastal Waters Forecast
National Weather Service Charleston SC
620 PM EST Mon Dec 29 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
AMZ300-301300-
620 PM EST Mon Dec 29 2025
.Synopsis for the coastal waters of south coastal South Carolina
and north coastal Georgia...
A strong cold front will push away from the region this evening.
High pressure will then prevail for the remainder of the week.
Another cold front could affect the area this weekend.
$$
AMZ330-301300-
Charleston Harbor-
620 PM EST Mon Dec 29 2025
...SMALL CRAFT ADVISORY IN EFFECT UNTIL 1 AM EST TUESDAY...
.TONIGHT...NW winds 15 to 20 kt with gusts to 30 kt, diminishing
to 10 to 15 kt with gusts to 20 kt after midnight. Waves 1 to
2 ft.
.TUE...NW winds 5 to 10 kt.
.TUE NIGHT...NW winds 5 kt.
.WED...W winds 5 to 10 kt.
.WED NIGHT...W winds 10 to 15 kt.
.THU...W winds 10 kt.
.THU NIGHT...W winds 5 kt.
.FRI...W winds 5 to 10 kt.
.FRI NIGHT...SW winds 5 kt. A chance of showers.
.SAT...SW winds 5 to 10 kt. Showers.
.SAT NIGHT...NW winds 10 kt. A chance of showers.
Unless otherwise noted, waves 1 foot or less.
Charleston Harbor water temperature 57 degrees.
$$
AMZ350-301300-
Waters from South Santee River to Edisto Beach SC out 20 NM-
620 PM EST Mon Dec 29 2025
...SMALL CRAFT ADVISORY IN EFFECT UNTIL 5 AM EST TUESDAY...
.TONIGHT...NW winds 20 to 25 kt with gusts to 30 kt, diminishing
to 15 to 20 kt with gusts to 25 kt after midnight. Seas 4 to
6 ft, subsiding to 4 to 5 ft after midnight. Wave Detail: W 6 ft
at 7 seconds and E 2 ft at 11 seconds, becoming NW 5 ft at
5 seconds and E 1 foot at 11 seconds.
.TUE...NW winds 10 to 15 kt. Seas 3 to 4 ft, subsiding to 2 to
3 ft in the afternoon. Wave Detail: NW 3 ft at 5 seconds and NE
1 foot at 10 seconds, becoming NW 2 ft at 4 seconds and NE 1 foot
at 7 seconds.
.TUE NIGHT...NW winds 10 kt. Seas 2 ft. Wave Detail: NW 1 foot at
4 seconds and NE 1 foot at 7 seconds.
.WED...W winds 10 to 15 kt. Seas 2 ft. Wave Detail: W 2 ft at
3 seconds and NE 1 foot at 6 seconds.
.WED NIGHT...W winds 15 to 20 kt with gusts to 25 kt. Seas 2 to
3 ft, building to 3 to 4 ft after midnight. Wave Detail: SW 3 ft
at 4 seconds and E 1 foot at 8 seconds, becoming SW 4 ft at
5 seconds.
.THU...W winds 15 to 20 kt, diminishing to 10 to 15 kt in the
afternoon. Seas 3 to 4 ft, subsiding to 2 to 3 ft in the
afternoon. Wave Detail: W 4 ft at 5 seconds, becoming SW 3 ft at
5 seconds.
.THU NIGHT...W winds 10 to 15 kt. Seas 2 to 3 ft.
.FRI...W winds 5 to 10 kt. Seas 2 ft.
.FRI NIGHT...SW winds 10 to 15 kt. Seas 2 ft. A chance of
showers.
.SAT...SW winds 15 to 20 kt. Seas 3 to 4 ft. Showers.
.SAT NIGHT...N winds 10 to 15 kt. Seas 4 to 5 ft. Showers likely.
$$
AMZ352-301300-
Waters from Edisto Beach SC to Savannah GA out 20 NM-
620 PM EST Mon Dec 29 2025
...SMALL CRAFT ADVISORY IN EFFECT UNTIL 5 AM EST TUESDAY...
.TONIGHT...NW winds 20 to 25 kt, diminishing to 15 to 20 kt after
midnight. Seas 4 to 5 ft. Wave Detail: NW 5 ft at 5 seconds and E
2 ft at 11 seconds.
.TUE...NW winds 10 to 15 kt. Seas 3 to 4 ft, subsiding to 2 to
3 ft in the afternoon. Wave Detail: NW 3 ft at 4 seconds and E
1 foot at 10 seconds, becoming NW 2 ft at 4 seconds and E 1 foot
at 8 seconds.
.TUE NIGHT...NW winds 10 to 15 kt. Seas 2 ft. Wave Detail: NW
1 foot at 3 seconds and E 1 foot at 8 seconds.
.WED...W winds 10 to 15 kt. Seas 2 ft. Wave Detail: W 2 ft at
3 seconds and E 1 foot at 8 seconds.
.WED NIGHT...W winds 15 to 20 kt. Seas 2 to 3 ft. Wave Detail: W
3 ft at 4 seconds and E 1 foot at 8 seconds.
.THU...W winds 15 to 20 kt, diminishing to 10 to 15 kt in the
afternoon. Seas 2 to 3 ft. Wave Detail: W 3 ft at 4 seconds and E
1 foot at 8 seconds.
.THU NIGHT...W winds 10 to 15 kt. Seas 2 ft.
.FRI...W winds 5 to 10 kt. Seas 2 ft.
.FRI NIGHT...SW winds 10 to 15 kt. Seas 2 ft. A chance of
showers.
.SAT...SW winds 15 to 20 kt. Seas 3 to 4 ft. Showers.
.SAT NIGHT...NW winds 10 to 15 kt. Seas 3 to 4 ft. Showers likely
with a slight chance of tstms.
Winds and seas higher in and near tstms.
$$
AMZ354-301300-
Waters from Savannah GA to Altamaha Sound GA out 20 NM, including
Grays Reef National Marine Sanctuary-
620 PM EST Mon Dec 29 2025
...SMALL CRAFT ADVISORY IN EFFECT UNTIL 5 AM EST TUESDAY...
.TONIGHT...NW winds 20 to 25 kt, diminishing to 15 to 20 kt late.
Seas 4 to 5 ft. Wave Detail: NW 5 ft at 4 seconds and E 2 ft at
12 seconds.
.TUE...NW winds 15 to 20 kt, diminishing to 10 to 15 kt in the
afternoon. Seas 3 to 4 ft, subsiding to 2 to 3 ft in the
afternoon. Wave Detail: NW 4 ft at 4 seconds and E 2 ft at
11 seconds, becoming NW 2 ft at 4 seconds and E 2 ft at
9 seconds.
.TUE NIGHT...NW winds 10 to 15 kt. Seas 2 to 3 ft. Wave Detail:
NW 2 ft at 3 seconds and NE 1 foot at 7 seconds.
.WED...W winds 10 to 15 kt. Seas 2 to 3 ft. Wave Detail: NW 2 ft
at 3 seconds and E 1 foot at 9 seconds.
.WED NIGHT...W winds 15 to 20 kt. Seas 2 to 3 ft. Wave Detail: W
3 ft at 4 seconds and E 1 foot at 8 seconds.
.THU...W winds 10 to 15 kt. Seas 2 to 3 ft. Wave Detail: W 3 ft
at 4 seconds and E 1 foot at 8 seconds.
.THU NIGHT...W winds 10 to 15 kt. Seas 2 ft.
.FRI...SW winds 5 to 10 kt. Seas 2 ft.
.FRI NIGHT...SW winds 10 to 15 kt. Seas 2 ft. A chance of
showers.
.SAT...SW winds 15 to 20 kt. Seas 3 to 4 ft. Showers with a
slight chance of tstms.
.SAT NIGHT...NW winds 10 to 15 kt. Seas 3 to 4 ft. Showers likely
with a slight chance of tstms.
Winds and seas higher in and near tstms.
$$
AMZ374-301300-
Waters from Savannah GA to Altamaha Sound GA from 20 to 60 NM-
620 PM EST Mon Dec 29 2025
...SMALL CRAFT ADVISORY IN EFFECT THROUGH TUESDAY AFTERNOON...
.TONIGHT...NW winds 20 to 25 kt. Seas 5 to 7 ft. Wave Detail: W
7 ft at 5 seconds and E 3 ft at 11 seconds.
.TUE...NW winds 15 to 20 kt, diminishing to 10 to 15 kt in the
afternoon. Seas 4 to 6 ft, subsiding to 3 to 4 ft in the
afternoon. Wave Detail: NW 5 ft at 5 seconds and E 2 ft at
11 seconds, becoming NW 4 ft at 5 seconds and NE 2 ft at
10 seconds.
.TUE NIGHT...NW winds 10 to 15 kt with gusts to 20 kt. Seas 2 to
3 ft. Wave Detail: NW 2 ft at 4 seconds and NE 2 ft at 8 seconds.
.WED...NW winds 15 kt with gusts to 20 kt. Seas 2 to 3 ft. Wave
Detail: NW 3 ft at 4 seconds and E 1 foot at 9 seconds.
.WED NIGHT...W winds 15 to 20 kt with gusts to 25 kt. Seas 3 to
4 ft, building to 4 to 5 ft after midnight. Wave Detail: W 4 ft
at 4 seconds and E 1 foot at 8 seconds, becoming W 4 ft at
5 seconds and E 1 foot at 8 seconds.
.THU...W winds 15 to 20 kt with gusts to 25 kt. Seas 4 to 5 ft,
subsiding to 3 to 4 ft in the afternoon. Wave Detail: W 4 ft at
5 seconds and E 1 foot at 9 seconds, becoming W 3 ft at 4 seconds
and E 1 foot at 9 seconds.
.THU NIGHT...W winds 15 to 20 kt. Seas 3 to 4 ft, subsiding to
2 to 3 ft after midnight.
.FRI...W winds 10 to 15 kt. Seas 2 to 3 ft.
.FRI NIGHT...SW winds 10 to 15 kt. Seas 2 to 3 ft. A chance of
showers.
.SAT...SW winds 20 to 25 kt. Seas 4 to 6 ft. Showers with a
slight chance of tstms.
.SAT NIGHT...NW winds 15 to 20 kt. Seas 4 to 6 ft. Showers likely
with a slight chance of tstms.
Winds and seas higher in and near tstms.
$$
CWFCHS
Coastal Waters Forecast
National Weather Service Charleston SC
620 PM EST Mon Dec 29 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
AMZ300-301300-
620 PM EST Mon Dec 29 2025
.Synopsis for the coastal waters of south coastal South Carolina
and north coastal Georgia...
A strong cold front will push away from the region this evening.
High pressure will then prevail for the remainder of the week.
Another cold front could affect the area this weekend.
$$
AMZ330-301300-
Charleston Harbor-
620 PM EST Mon Dec 29 2025
...SMALL CRAFT ADVISORY IN EFFECT UNTIL 1 AM EST TUESDAY...
.TONIGHT...NW winds 15 to 20 kt with gusts to 30 kt, diminishing
to 10 to 15 kt with gusts to 20 kt after midnight. Waves 1 to
2 ft.
.TUE...NW winds 5 to 10 kt.
.TUE NIGHT...NW winds 5 kt.
.WED...W winds 5 to 10 kt.
.WED NIGHT...W winds 10 to 15 kt.
.THU...W winds 10 kt.
.THU NIGHT...W winds 5 kt.
.FRI...W winds 5 to 10 kt.
.FRI NIGHT...SW winds 5 kt. A chance of showers.
.SAT...SW winds 5 to 10 kt. Showers.
.SAT NIGHT...NW winds 10 kt. A chance of showers.
Unless otherwise noted, waves 1 foot or less.
Charleston Harbor water temperature 57 degrees.
$$
AMZ350-301300-
Waters from South Santee River to Edisto Beach SC out 20 NM-
620 PM EST Mon Dec 29 2025
...SMALL CRAFT ADVISORY IN EFFECT UNTIL 5 AM EST TUESDAY...
.TONIGHT...NW winds 20 to 25 kt with gusts to 30 kt, diminishing
to 15 to 20 kt with gusts to 25 kt after midnight. Seas 4 to
6 ft, subsiding to 4 to 5 ft after midnight. Wave Detail: W 6 ft
at 7 seconds and E 2 ft at 11 seconds, becoming NW 5 ft at
5 seconds and E 1 foot at 11 seconds.
.TUE...NW winds 10 to 15 kt. Seas 3 to 4 ft, subsiding to 2 to
3 ft in the afternoon. Wave Detail: NW 3 ft at 5 seconds and NE
1 foot at 10 seconds, becoming NW 2 ft at 4 seconds and NE 1 foot
at 7 seconds.
.TUE NIGHT...NW winds 10 kt. Seas 2 ft. Wave Detail: NW 1 foot at
4 seconds and NE 1 foot at 7 seconds.
.WED...W winds 10 to 15 kt. Seas 2 ft. Wave Detail: W 2 ft at
3 seconds and NE 1 foot at 6 seconds.
.WED NIGHT...W winds 15 to 20 kt with gusts to 25 kt. Seas 2 to
3 ft, building to 3 to 4 ft after midnight. Wave Detail: SW 3 ft
at 4 seconds and E 1 foot at 8 seconds, becoming SW 4 ft at
5 seconds.
.THU...W winds 15 to 20 kt, diminishing to 10 to 15 kt in the
afternoon. Seas 3 to 4 ft, subsiding to 2 to 3 ft in the
afternoon. Wave Detail: W 4 ft at 5 seconds, becoming SW 3 ft at
5 seconds.
.THU NIGHT...W winds 10 to 15 kt. Seas 2 to 3 ft.
.FRI...W winds 5 to 10 kt. Seas 2 ft.
.FRI NIGHT...SW winds 10 to 15 kt. Seas 2 ft. A chance of
showers.
.SAT...SW winds 15 to 20 kt. Seas 3 to 4 ft. Showers.
.SAT NIGHT...N winds 10 to 15 kt. Seas 4 to 5 ft. Showers likely.
$$
AMZ352-301300-
Waters from Edisto Beach SC to Savannah GA out 20 NM-
620 PM EST Mon Dec 29 2025
...SMALL CRAFT ADVISORY IN EFFECT UNTIL 5 AM EST TUESDAY...
.TONIGHT...NW winds 20 to 25 kt, diminishing to 15 to 20 kt after
midnight. Seas 4 to 5 ft. Wave Detail: NW 5 ft at 5 seconds and E
2 ft at 11 seconds.
.TUE...NW winds 10 to 15 kt. Seas 3 to 4 ft, subsiding to 2 to
3 ft in the afternoon. Wave Detail: NW 3 ft at 4 seconds and E
1 foot at 10 seconds, becoming NW 2 ft at 4 seconds and E 1 foot
at 8 seconds.
.TUE NIGHT...NW winds 10 to 15 kt. Seas 2 ft. Wave Detail: NW
1 foot at 3 seconds and E 1 foot at 8 seconds.
.WED...W winds 10 to 15 kt. Seas 2 ft. Wave Detail: W 2 ft at
3 seconds and E 1 foot at 8 seconds.
.WED NIGHT...W winds 15 to 20 kt. Seas 2 to 3 ft. Wave Detail: W
3 ft at 4 seconds and E 1 foot at 8 seconds.
.THU...W winds 15 to 20 kt, diminishing to 10 to 15 kt in the
afternoon. Seas 2 to 3 ft. Wave Detail: W 3 ft at 4 seconds and E
1 foot at 8 seconds.
.THU NIGHT...W winds 10 to 15 kt. Seas 2 ft.
.FRI...W winds 5 to 10 kt. Seas 2 ft.
.FRI NIGHT...SW winds 10 to 15 kt. Seas 2 ft. A chance of
showers.
.SAT...SW winds 15 to 20 kt. Seas 3 to 4 ft. Showers.
.SAT NIGHT...NW winds 10 to 15 kt. Seas 3 to 4 ft. Showers likely
with a slight chance of tstms.
Winds and seas higher in and near tstms.
$$
AMZ354-301300-
Waters from Savannah GA to Altamaha Sound GA out 20 NM, including
Grays Reef National Marine Sanctuary-
620 PM EST Mon Dec 29 2025
...SMALL CRAFT ADVISORY IN EFFECT UNTIL 5 AM EST TUESDAY...
.TONIGHT...NW winds 20 to 25 kt, diminishing to 15 to 20 kt late.
Seas 4 to 5 ft. Wave Detail: NW 5 ft at 4 seconds and E 2 ft at
12 seconds.
.TUE...NW winds 15 to 20 kt, diminishing to 10 to 15 kt in the
afternoon. Seas 3 to 4 ft, subsiding to 2 to 3 ft in the
afternoon. Wave Detail: NW 4 ft at 4 seconds and E 2 ft at
11 seconds, becoming NW 2 ft at 4 seconds and E 2 ft at
9 seconds.
.TUE NIGHT...NW winds 10 to 15 kt. Seas 2 to 3 ft. Wave Detail:
NW 2 ft at 3 seconds and NE 1 foot at 7 seconds.
.WED...W winds 10 to 15 kt. Seas 2 to 3 ft. Wave Detail: NW 2 ft
at 3 seconds and E 1 foot at 9 seconds.
.WED NIGHT...W winds 15 to 20 kt. Seas 2 to 3 ft. Wave Detail: W
3 ft at 4 seconds and E 1 foot at 8 seconds.
.THU...W winds 10 to 15 kt. Seas 2 to 3 ft. Wave Detail: W 3 ft
at 4 seconds and E 1 foot at 8 seconds.
.THU NIGHT...W winds 10 to 15 kt. Seas 2 ft.
.FRI...SW winds 5 to 10 kt. Seas 2 ft.
.FRI NIGHT...SW winds 10 to 15 kt. Seas 2 ft. A chance of
showers.
.SAT...SW winds 15 to 20 kt. Seas 3 to 4 ft. Showers with a
slight chance of tstms.
.SAT NIGHT...NW winds 10 to 15 kt. Seas 3 to 4 ft. Showers likely
with a slight chance of tstms.
Winds and seas higher in and near tstms.
$$
AMZ374-301300-
Waters from Savannah GA to Altamaha Sound GA from 20 to 60 NM-
620 PM EST Mon Dec 29 2025
...SMALL CRAFT ADVISORY IN EFFECT THROUGH TUESDAY AFTERNOON...
.TONIGHT...NW winds 20 to 25 kt. Seas 5 to 7 ft. Wave Detail: W
7 ft at 5 seconds and E 3 ft at 11 seconds.
.TUE...NW winds 15 to 20 kt, diminishing to 10 to 15 kt in the
afternoon. Seas 4 to 6 ft, subsiding to 3 to 4 ft in the
afternoon. Wave Detail: NW 5 ft at 5 seconds and E 2 ft at
11 seconds, becoming NW 4 ft at 5 seconds and NE 2 ft at
10 seconds.
.TUE NIGHT...NW winds 10 to 15 kt with gusts to 20 kt. Seas 2 to
3 ft. Wave Detail: NW 2 ft at 4 seconds and NE 2 ft at 8 seconds.
.WED...NW winds 15 kt with gusts to 20 kt. Seas 2 to 3 ft. Wave
Detail: NW 3 ft at 4 seconds and E 1 foot at 9 seconds.
.WED NIGHT...W winds 15 to 20 kt with gusts to 25 kt. Seas 3 to
4 ft, building to 4 to 5 ft after midnight. Wave Detail: W 4 ft
at 4 seconds and E 1 foot at 8 seconds, becoming W 4 ft at
5 seconds and E 1 foot at 8 seconds.
.THU...W winds 15 to 20 kt with gusts to 25 kt. Seas 4 to 5 ft,
subsiding to 3 to 4 ft in the afternoon. Wave Detail: W 4 ft at
5 seconds and E 1 foot at 9 seconds, becoming W 3 ft at 4 seconds
and E 1 foot at 9 seconds.
.THU NIGHT...W winds 15 to 20 kt. Seas 3 to 4 ft, subsiding to
2 to 3 ft after midnight.
.FRI...W winds 10 to 15 kt. Seas 2 to 3 ft.
.FRI NIGHT...SW winds 10 to 15 kt. Seas 2 to 3 ft. A chance of
showers.
.SAT...SW winds 20 to 25 kt. Seas 4 to 6 ft. Showers with a
slight chance of tstms.
.SAT NIGHT...NW winds 15 to 20 kt. Seas 4 to 6 ft. Showers likely
with a slight chance of tstms.
Winds and seas higher in and near tstms.
$$