936
FZUS52 KCHS 242240
CWFCHS

Coastal Waters Forecast
National Weather Service Charleston SC
640 PM EDT Sun Aug 24 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

AMZ300-251130-
640 PM EDT Sun Aug 24 2025

.Synopsis for the coastal waters of south coastal South Carolina
and north coastal Georgia...
Low pressure will pull away from the area tonight. A cold front
will clear the area Monday night with high pressure prevailing
through much of the week.

$$

AMZ330-251130-
Charleston Harbor-
640 PM EDT Sun Aug 24 2025

.TONIGHT...SW winds 5 to 10 kt, becoming W 5 kt late.
.MON...W winds 5 kt, becoming SW in the afternoon. A slight
chance of showers and tstms in the afternoon.
.MON NIGHT...SW winds 5 to 10 kt, becoming W after midnight.
.TUE...N winds 5 kt, becoming E in the afternoon.
.TUE NIGHT...E winds 5 kt, becoming N after midnight.
.WED...NE winds 10 kt.
.WED NIGHT...NE winds 5 to 10 kt.
.THU...NE winds 5 to 10 kt. A slight chance of showers and tstms.
.THU NIGHT...E winds 5 to 10 kt. A chance of showers with a
slight chance of tstms.
.FRI...NE winds 5 to 10 kt. A chance of showers with a slight
chance of tstms.
.FRI NIGHT...E winds 5 to 10 kt. A chance of showers.

Winds and waves higher in and near tstms.

Unless otherwise noted, waves 1 foot or less.

Charleston Harbor water temperature 83 degrees.

$$

AMZ350-251130-
Waters from South Santee River to Edisto Beach SC out 20 NM-
640 PM EDT Sun Aug 24 2025

.TONIGHT...SE winds 5 to 10 kt, becoming SW this evening, then W
after midnight. Seas 2 to 3 ft. Wave Detail: E 3 ft at 6 seconds
and E 2 ft at 13 seconds. A slight chance of showers and tstms
after midnight.
.MON...W winds 5 to 10 kt, becoming SW in the afternoon. Seas
2 to 3 ft. Wave Detail: E 2 ft at 6 seconds and E 2 ft at
12 seconds.
.MON NIGHT...SW winds 10 kt, becoming W after midnight. Seas 2 to
3 ft. Wave Detail: SW 2 ft at 4 seconds and E 2 ft at 12 seconds.
A slight chance of showers and tstms.
.TUE...N winds 5 to 10 kt, becoming NE in the afternoon. Seas
2 to 3 ft. Wave Detail: SW 2 ft at 4 seconds and E 2 ft at
12 seconds. A slight chance of showers and tstms in the morning.
.TUE NIGHT...NE winds 5 to 10 kt. Seas 2 ft. Wave Detail: NE
1 foot at 3 seconds and S 1 foot at 4 seconds. A slight chance of
showers and tstms.
.WED...NE winds 10 to 15 kt. Seas 2 to 3 ft. Wave Detail: NE 2 ft
at 3 seconds and SE 2 ft at 10 seconds. A slight chance of
showers and tstms.
.WED NIGHT...NE winds 10 to 15 kt. Seas 2 to 3 ft. A slight
chance of showers and tstms.
.THU...NE winds 10 kt. Seas 2 to 3 ft. A slight chance of showers
and tstms.
.THU NIGHT...E winds 10 kt. Seas 2 to 3 ft. A chance of showers
and tstms.
.FRI...NE winds 10 to 15 kt. Seas 2 to 3 ft. A chance of showers.
.FRI NIGHT...NE winds 10 to 15 kt. Seas 3 ft. A chance of
showers.

Winds and seas higher in and near tstms.

$$

AMZ352-251130-
Waters from Edisto Beach SC to Savannah GA out 20 NM-
640 PM EDT Sun Aug 24 2025

.TONIGHT...SE winds 5 to 10 kt, becoming SW this evening, then W
after midnight. Seas 2 ft. Wave Detail: E 2 ft at 7 seconds and
SW 1 foot at 4 seconds. A slight chance of showers and tstms after
midnight.
.MON...W winds 5 to 10 kt, becoming SW in the afternoon. Seas
2 to 3 ft. Wave Detail: E 2 ft at 6 seconds and SW 1 foot at
4 seconds.
.MON NIGHT...SW winds 5 to 10 kt, becoming W after midnight. Seas
2 ft. Wave Detail: E 2 ft at 6 seconds and S 1 foot at 5 seconds.
.TUE...N winds 5 kt, becoming E in the afternoon. Seas 2 ft. Wave
Detail: E 2 ft at 12 seconds and SW 1 foot at 4 seconds.
.TUE NIGHT...SW winds 5 kt, becoming N after midnight. Seas 2 ft.
Wave Detail: E 2 ft at 12 seconds and SW 1 foot at 3 seconds. A
slight chance of showers. A slight chance of tstms after
midnight.
.WED...NE winds 10 kt. Seas 2 to 3 ft. Wave Detail: NE 2 ft at
3 seconds and SE 1 foot at 5 seconds. A slight chance of showers
and tstms.
.WED NIGHT...E winds 10 kt. Seas 2 to 3 ft. A slight chance of
showers and tstms.
.THU...NE winds 10 kt. Seas 2 ft. A chance of showers with a
slight chance of tstms.
.THU NIGHT...E winds 10 kt. Seas 2 to 3 ft. A chance of showers
and tstms.
.FRI...NE winds 10 kt. Seas 2 to 3 ft. A chance of showers.
.FRI NIGHT...NE winds 10 kt. Seas 2 to 3 ft. A chance of showers.


Winds and seas higher in and near tstms.

$$

AMZ354-251130-
Waters from Savannah GA to Altamaha Sound GA out 20 NM, including
Grays Reef National Marine Sanctuary-
640 PM EDT Sun Aug 24 2025

.TONIGHT...S winds 5 kt, becoming W after midnight. Seas 2 ft.
Wave Detail: E 2 ft at 7 seconds and E 2 ft at 15 seconds. A
slight chance of showers and tstms until early morning.
.MON...W winds 5 to 10 kt, becoming SW in the afternoon. Seas
2 to 3 ft. Wave Detail: E 2 ft at 6 seconds and E 2 ft at
14 seconds. A slight chance of showers and tstms in the
afternoon.
.MON NIGHT...SW winds 5 to 10 kt, becoming W after midnight. Seas
2 to 3 ft. Wave Detail: E 2 ft at 6 seconds and E 2 ft at
12 seconds.
.TUE...N winds 5 to 10 kt, becoming NE in the afternoon. Seas
2 to 3 ft. Wave Detail: E 2 ft at 12 seconds and S 1 foot at
4 seconds.
.TUE NIGHT...E winds 5 kt, becoming N after midnight. Seas 2 ft.
Wave Detail: E 2 ft at 12 seconds and S 1 foot at 4 seconds.
.WED...NE winds 10 to 15 kt. Seas 2 to 3 ft. Wave Detail: NE 2 ft
at 3 seconds and E 2 ft at 11 seconds. A slight chance of showers
and tstms in the afternoon.
.WED NIGHT...E winds 10 to 15 kt. Seas 2 to 3 ft. A slight chance
of showers and tstms.
.THU...E winds 10 kt. Seas 2 to 3 ft. A chance of showers and
tstms.
.THU NIGHT...E winds 10 to 15 kt. Seas 2 to 3 ft. A chance of
showers and tstms.
.FRI...NE winds 10 to 15 kt. Seas 2 to 3 ft. A chance of showers
with a slight chance of tstms.
.FRI NIGHT...NE winds 10 to 15 kt. Seas 3 ft. A chance of showers
with a slight chance of tstms.

Winds and seas higher in and near tstms.

$$

AMZ374-251130-
Waters from Savannah GA to Altamaha Sound GA from 20 to 60 NM-
640 PM EDT Sun Aug 24 2025

.TONIGHT...NW winds 5 to 10 kt, becoming SW this evening, then W
after midnight. Seas 3 to 4 ft, subsiding to 2 to 3 ft after
midnight. Wave Detail: E 3 ft at 7 seconds and E 2 ft at 14
seconds, becoming E 3 ft at 14 seconds and NE 2 ft at 6 seconds. A
slight chance of showers and tstms this evening. A chance of
showers and tstms after midnight, then a slight chance of showers
and tstms late.
.MON...W winds 5 to 10 kt, becoming SW in the afternoon. Seas
3 to 4 ft. Wave Detail: E 3 ft at 13 seconds and E 2 ft at
7 seconds. A slight chance of showers and tstms.
.MON NIGHT...SW winds 5 to 10 kt, becoming W after midnight. Seas
3 ft. Wave Detail: E 3 ft at 12 seconds and NE 2 ft at 6 seconds.
A slight chance of showers and tstms.
.TUE...NW winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: E 3 ft
at 12 seconds and SW 1 foot at 4 seconds. A slight chance of
tstms in the morning. A slight chance of showers.
.TUE NIGHT...N winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: E
2 ft at 12 seconds and S 1 foot at 4 seconds. A slight chance of
showers. A slight chance of tstms after midnight.
.WED...NE winds 10 kt. Seas 2 to 3 ft. Wave Detail: N 2 ft at
3 seconds and E 2 ft at 11 seconds. A slight chance of showers
and tstms.
.WED NIGHT...NE winds 10 kt. Seas 3 ft. A chance of showers with
a slight chance of tstms.
.THU...NE winds 10 kt. Seas 3 ft. A chance of showers with a
slight chance of tstms.
.THU NIGHT...E winds 10 kt. Seas 3 ft. A chance of showers and
tstms.
.FRI...NE winds 10 kt. Seas 3 ft. A chance of showers with a
slight chance of tstms.
.FRI NIGHT...NE winds 10 to 15 kt. Seas 3 ft. Showers likely with
a slight chance of tstms.

Winds and seas higher in and near tstms.

$$