FZUS52 KCHS 152140
CWFCHS
Coastal Waters Forecast
National Weather Service Charleston SC
439 PM 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
AMZ300-161000-
439 PM EST Mon Dec 15 2025
.Synopsis for the coastal waters of south coastal South Carolina
and north coastal Georgia...
Cold conditions will continue into Tuesday. High pressure will
prevail through Thursday before a cold front pushes offshore
Friday.
$$
AMZ330-161000-
Charleston Harbor-
439 PM EST Mon Dec 15 2025
.TONIGHT...N winds 5 kt.
.TUE...N winds 5 kt, becoming SW in the afternoon.
.TUE NIGHT...S winds 5 kt in the evening, becoming light and
variable.
.WED...NW winds 5 kt.
.WED NIGHT...Light and variable winds, becoming NE 5 kt after
midnight. A slight chance of rain after midnight.
.THU...E winds 5 kt, becoming SE in the afternoon. A slight
chance of tstms. A chance of rain in the morning, then rain
likely in the afternoon.
.THU NIGHT...SW winds 5 to 10 kt. A chance of rain.
.FRI...W winds 10 kt.
.FRI NIGHT...N winds 5 kt.
.SAT...NE winds 5 kt.
.SAT NIGHT...SE winds 5 kt.
Winds and waves higher in and near tstms.
Unless otherwise noted, waves 1 foot or less.
Charleston Harbor water temperature 54 degrees.
$$
AMZ350-161000-
Waters from South Santee River to Edisto Beach SC out 20 NM-
439 PM EST Mon Dec 15 2025
.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 9 seconds, becoming E
4 ft at 10 seconds.
.TUE...N winds 5 to 10 kt, becoming NW 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, becoming E 3 ft at 9 seconds and SE 2 ft at
10 seconds.
.TUE NIGHT...SW winds 5 kt, becoming W after midnight. Seas 2 to
3 ft. Wave Detail: E 2 ft at 10 seconds.
.WED...NW winds 5 kt. Seas 2 to 3 ft. Wave Detail: E 2 ft at
8 seconds and SE 2 ft at 10 seconds.
.WED NIGHT...E winds 5 kt. Seas 2 to 3 ft. Wave Detail: SE 2 ft
at 10 seconds. A slight chance of rain after midnight.
.THU...SE winds 5 to 10 kt, becoming S in the afternoon. Seas
2 to 3 ft. Wave Detail: SE 3 ft at 9 seconds and S 1 foot at
5 seconds. A slight chance of tstms. A chance of rain in the
morning, then rain likely in the afternoon.
.THU NIGHT...S winds 10 to 15 kt, becoming SW 15 to 20 kt after
midnight. Seas 3 to 4 ft, building to 4 to 6 ft after midnight.
Rain likely with a slight chance of tstms in the evening, then a
chance of rain after midnight.
.FRI...W winds 15 to 20 kt. Seas 4 to 6 ft.
.FRI NIGHT...N winds 10 kt. Seas 4 to 5 ft.
.SAT...NE winds 5 to 10 kt. Seas 3 ft.
.SAT NIGHT...S winds 5 kt. Seas 2 to 3 ft.
Winds and seas higher in and near tstms.
$$
AMZ352-161000-
Waters from Edisto Beach SC to Savannah GA out 20 NM-
439 PM EST Mon Dec 15 2025
.TONIGHT...NE winds 5 to 10 kt. Seas 4 to 5 ft, subsiding to 3 to
4 ft after midnight. Wave Detail: E 4 ft at 9 seconds, becoming E
4 ft at 9 seconds and SE 1 foot at 9 seconds.
.TUE...N winds 5 to 10 kt. Seas 3 to 4 ft, subsiding to 2 to 3 ft
in the afternoon. Wave Detail: E 3 ft at 9 seconds and SE 2 ft at
10 seconds.
.TUE NIGHT...SE winds 5 kt, becoming NE after midnight. Seas 2 to
3 ft. Wave Detail: E 2 ft at 8 seconds and SE 2 ft at 10 seconds.
.WED...N winds 5 kt. Seas 2 to 3 ft. Wave Detail: SE 2 ft at
10 seconds.
.WED NIGHT...E winds 5 kt. Seas 2 to 3 ft. Wave Detail: SE 2 ft
at 10 seconds. A chance of rain after midnight.
.THU...E winds 5 kt, becoming S in the afternoon. Seas 2 to 3 ft.
Wave Detail: SE 3 ft at 10 seconds. Rain likely with a slight
chance of tstms.
.THU NIGHT...S winds 5 to 10 kt, becoming SW 10 to 15 kt with
gusts to 20 kt after midnight. Seas 3 to 4 ft, building to 4 to
5 ft after midnight. Rain likely, mainly in the evening.
.FRI...W winds 10 to 15 kt. Seas 4 to 5 ft.
.FRI NIGHT...N winds 5 to 10 kt. Seas 3 to 4 ft.
.SAT...NE winds 5 to 10 kt. Seas 2 to 3 ft.
.SAT NIGHT...S winds 5 kt. Seas 2 to 3 ft.
Winds and seas higher in and near tstms.
$$
AMZ354-161000-
Waters from Savannah GA to Altamaha Sound GA out 20 NM, including
Grays Reef National Marine Sanctuary-
439 PM EST Mon Dec 15 2025
.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 and SE 2 ft at 10 seconds.
.TUE NIGHT...NE winds 5 kt. Seas 2 to 3 ft. Wave Detail: E 3 ft
at 8 seconds and SE 2 ft at 10 seconds.
.WED...N winds 5 to 10 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 chance of rain after midnight.
.THU...E winds 5 kt, becoming S in the afternoon. Seas 2 to 3 ft.
Wave Detail: SE 3 ft at 10 seconds. Rain likely, mainly in the
morning.
.THU NIGHT...SW winds 10 to 15 kt. Seas 3 to 4 ft. A chance of
rain.
.FRI...W winds 10 to 15 kt. Seas 3 to 4 ft.
.FRI NIGHT...N winds 10 kt. Seas 3 to 4 ft.
.SAT...NE winds 5 to 10 kt. Seas 2 to 3 ft.
.SAT NIGHT...S winds 5 kt. Seas 2 to 3 ft.
$$
AMZ374-161000-
Waters from Savannah GA to Altamaha Sound GA from 20 to 60 NM-
439 PM EST Mon Dec 15 2025
...SMALL CRAFT ADVISORY IN EFFECT UNTIL 1 AM EST TUESDAY...
.TONIGHT...NE winds 10 to 15 kt. Seas 5 to 7 ft, subsiding to
4 to 5 ft after midnight. Wave Detail: NE 7 ft at 9 seconds and
SE 2 ft at 10 seconds, becoming NE 5 ft at 9 seconds and SE 2 ft
at 10 seconds.
.TUE...N winds 5 to 10 kt. Seas 4 to 5 ft. Wave Detail: NE 5 ft
at 9 seconds and SE 2 ft at 10 seconds.
.TUE NIGHT...NE winds 5 to 10 kt. Seas 3 to 4 ft. Wave Detail: E
4 ft at 9 seconds and SE 2 ft at 10 seconds.
.WED...NE winds 5 to 10 kt. Seas 3 to 4 ft. Wave Detail: E 3 ft
at 8 seconds and SE 3 ft at 10 seconds. A slight chance of rain.
.WED NIGHT...E winds 5 to 10 kt. Seas 3 to 4 ft. Wave Detail: SE
3 ft at 10 seconds and E 2 ft at 8 seconds. A slight chance of
rain in the evening, then a chance of rain with a slight chance
of tstms after midnight.
.THU...S winds 5 to 10 kt. Seas 3 to 4 ft. Wave Detail: SE 4 ft
at 9 seconds and NE 1 foot at 7 seconds. Rain likely with a
slight chance of tstms.
.THU NIGHT...S winds 10 to 15 kt, becoming SW 15 to 20 kt after
midnight. Seas 4 to 5 ft, building to 4 to 6 ft after midnight. A
slight chance of tstms. Rain likely, mainly in the evening.
.FRI...W winds 15 to 20 kt. Seas 4 to 6 ft. A slight chance of
rain.
.FRI NIGHT...N winds 10 to 15 kt. Seas 4 to 5 ft.
.SAT...E winds 5 to 10 kt. Seas 3 to 4 ft.
.SAT NIGHT...S winds 5 kt. Seas 3 ft.
Winds and seas higher in and near tstms.
$$
CWFCHS
Coastal Waters Forecast
National Weather Service Charleston SC
439 PM 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
AMZ300-161000-
439 PM EST Mon Dec 15 2025
.Synopsis for the coastal waters of south coastal South Carolina
and north coastal Georgia...
Cold conditions will continue into Tuesday. High pressure will
prevail through Thursday before a cold front pushes offshore
Friday.
$$
AMZ330-161000-
Charleston Harbor-
439 PM EST Mon Dec 15 2025
.TONIGHT...N winds 5 kt.
.TUE...N winds 5 kt, becoming SW in the afternoon.
.TUE NIGHT...S winds 5 kt in the evening, becoming light and
variable.
.WED...NW winds 5 kt.
.WED NIGHT...Light and variable winds, becoming NE 5 kt after
midnight. A slight chance of rain after midnight.
.THU...E winds 5 kt, becoming SE in the afternoon. A slight
chance of tstms. A chance of rain in the morning, then rain
likely in the afternoon.
.THU NIGHT...SW winds 5 to 10 kt. A chance of rain.
.FRI...W winds 10 kt.
.FRI NIGHT...N winds 5 kt.
.SAT...NE winds 5 kt.
.SAT NIGHT...SE winds 5 kt.
Winds and waves higher in and near tstms.
Unless otherwise noted, waves 1 foot or less.
Charleston Harbor water temperature 54 degrees.
$$
AMZ350-161000-
Waters from South Santee River to Edisto Beach SC out 20 NM-
439 PM EST Mon Dec 15 2025
.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 9 seconds, becoming E
4 ft at 10 seconds.
.TUE...N winds 5 to 10 kt, becoming NW 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, becoming E 3 ft at 9 seconds and SE 2 ft at
10 seconds.
.TUE NIGHT...SW winds 5 kt, becoming W after midnight. Seas 2 to
3 ft. Wave Detail: E 2 ft at 10 seconds.
.WED...NW winds 5 kt. Seas 2 to 3 ft. Wave Detail: E 2 ft at
8 seconds and SE 2 ft at 10 seconds.
.WED NIGHT...E winds 5 kt. Seas 2 to 3 ft. Wave Detail: SE 2 ft
at 10 seconds. A slight chance of rain after midnight.
.THU...SE winds 5 to 10 kt, becoming S in the afternoon. Seas
2 to 3 ft. Wave Detail: SE 3 ft at 9 seconds and S 1 foot at
5 seconds. A slight chance of tstms. A chance of rain in the
morning, then rain likely in the afternoon.
.THU NIGHT...S winds 10 to 15 kt, becoming SW 15 to 20 kt after
midnight. Seas 3 to 4 ft, building to 4 to 6 ft after midnight.
Rain likely with a slight chance of tstms in the evening, then a
chance of rain after midnight.
.FRI...W winds 15 to 20 kt. Seas 4 to 6 ft.
.FRI NIGHT...N winds 10 kt. Seas 4 to 5 ft.
.SAT...NE winds 5 to 10 kt. Seas 3 ft.
.SAT NIGHT...S winds 5 kt. Seas 2 to 3 ft.
Winds and seas higher in and near tstms.
$$
AMZ352-161000-
Waters from Edisto Beach SC to Savannah GA out 20 NM-
439 PM EST Mon Dec 15 2025
.TONIGHT...NE winds 5 to 10 kt. Seas 4 to 5 ft, subsiding to 3 to
4 ft after midnight. Wave Detail: E 4 ft at 9 seconds, becoming E
4 ft at 9 seconds and SE 1 foot at 9 seconds.
.TUE...N winds 5 to 10 kt. Seas 3 to 4 ft, subsiding to 2 to 3 ft
in the afternoon. Wave Detail: E 3 ft at 9 seconds and SE 2 ft at
10 seconds.
.TUE NIGHT...SE winds 5 kt, becoming NE after midnight. Seas 2 to
3 ft. Wave Detail: E 2 ft at 8 seconds and SE 2 ft at 10 seconds.
.WED...N winds 5 kt. Seas 2 to 3 ft. Wave Detail: SE 2 ft at
10 seconds.
.WED NIGHT...E winds 5 kt. Seas 2 to 3 ft. Wave Detail: SE 2 ft
at 10 seconds. A chance of rain after midnight.
.THU...E winds 5 kt, becoming S in the afternoon. Seas 2 to 3 ft.
Wave Detail: SE 3 ft at 10 seconds. Rain likely with a slight
chance of tstms.
.THU NIGHT...S winds 5 to 10 kt, becoming SW 10 to 15 kt with
gusts to 20 kt after midnight. Seas 3 to 4 ft, building to 4 to
5 ft after midnight. Rain likely, mainly in the evening.
.FRI...W winds 10 to 15 kt. Seas 4 to 5 ft.
.FRI NIGHT...N winds 5 to 10 kt. Seas 3 to 4 ft.
.SAT...NE winds 5 to 10 kt. Seas 2 to 3 ft.
.SAT NIGHT...S winds 5 kt. Seas 2 to 3 ft.
Winds and seas higher in and near tstms.
$$
AMZ354-161000-
Waters from Savannah GA to Altamaha Sound GA out 20 NM, including
Grays Reef National Marine Sanctuary-
439 PM EST Mon Dec 15 2025
.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 and SE 2 ft at 10 seconds.
.TUE NIGHT...NE winds 5 kt. Seas 2 to 3 ft. Wave Detail: E 3 ft
at 8 seconds and SE 2 ft at 10 seconds.
.WED...N winds 5 to 10 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 chance of rain after midnight.
.THU...E winds 5 kt, becoming S in the afternoon. Seas 2 to 3 ft.
Wave Detail: SE 3 ft at 10 seconds. Rain likely, mainly in the
morning.
.THU NIGHT...SW winds 10 to 15 kt. Seas 3 to 4 ft. A chance of
rain.
.FRI...W winds 10 to 15 kt. Seas 3 to 4 ft.
.FRI NIGHT...N winds 10 kt. Seas 3 to 4 ft.
.SAT...NE winds 5 to 10 kt. Seas 2 to 3 ft.
.SAT NIGHT...S winds 5 kt. Seas 2 to 3 ft.
$$
AMZ374-161000-
Waters from Savannah GA to Altamaha Sound GA from 20 to 60 NM-
439 PM EST Mon Dec 15 2025
...SMALL CRAFT ADVISORY IN EFFECT UNTIL 1 AM EST TUESDAY...
.TONIGHT...NE winds 10 to 15 kt. Seas 5 to 7 ft, subsiding to
4 to 5 ft after midnight. Wave Detail: NE 7 ft at 9 seconds and
SE 2 ft at 10 seconds, becoming NE 5 ft at 9 seconds and SE 2 ft
at 10 seconds.
.TUE...N winds 5 to 10 kt. Seas 4 to 5 ft. Wave Detail: NE 5 ft
at 9 seconds and SE 2 ft at 10 seconds.
.TUE NIGHT...NE winds 5 to 10 kt. Seas 3 to 4 ft. Wave Detail: E
4 ft at 9 seconds and SE 2 ft at 10 seconds.
.WED...NE winds 5 to 10 kt. Seas 3 to 4 ft. Wave Detail: E 3 ft
at 8 seconds and SE 3 ft at 10 seconds. A slight chance of rain.
.WED NIGHT...E winds 5 to 10 kt. Seas 3 to 4 ft. Wave Detail: SE
3 ft at 10 seconds and E 2 ft at 8 seconds. A slight chance of
rain in the evening, then a chance of rain with a slight chance
of tstms after midnight.
.THU...S winds 5 to 10 kt. Seas 3 to 4 ft. Wave Detail: SE 4 ft
at 9 seconds and NE 1 foot at 7 seconds. Rain likely with a
slight chance of tstms.
.THU NIGHT...S winds 10 to 15 kt, becoming SW 15 to 20 kt after
midnight. Seas 4 to 5 ft, building to 4 to 6 ft after midnight. A
slight chance of tstms. Rain likely, mainly in the evening.
.FRI...W winds 15 to 20 kt. Seas 4 to 6 ft. A slight chance of
rain.
.FRI NIGHT...N winds 10 to 15 kt. Seas 4 to 5 ft.
.SAT...E winds 5 to 10 kt. Seas 3 to 4 ft.
.SAT NIGHT...S winds 5 kt. Seas 3 ft.
Winds and seas higher in and near tstms.
$$