003
FZUS52 KCHS 241050
CWFCHS

Coastal Waters Forecast
National Weather Service Charleston SC
650 AM 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

AMZ300-242300-
650 AM EDT Sun Aug 24 2025

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

$$

AMZ330-242300-
Charleston Harbor-
650 AM EDT Sun Aug 24 2025

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

$$

AMZ350-242300-
Waters from South Santee River to Edisto Beach SC out 20 NM-
650 AM EDT Sun Aug 24 2025

.TODAY...N winds 5 to 10 kt. Seas 3 ft. Wave Detail: E 3 ft at
5 seconds and E 2 ft at 12 seconds. A slight chance of tstms. A
chance of showers until late afternoon, then a slight chance of
showers late.
.TONIGHT...SW winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: E
2 ft at 6 seconds and E 2 ft at 13 seconds. A slight chance of
showers and tstms.
.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. A slight chance of showers and tstms.
.MON NIGHT...SW winds 10 kt, becoming W after midnight. Seas 2 to
3 ft. Wave Detail: S 2 ft at 5 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 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 SE 1 foot at 8 seconds. A slight chance
of tstms. A slight chance of showers in the evening, then a
chance of showers after midnight.
.WED...NE winds 10 to 15 kt. Seas 2 to 3 ft. 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.
.THU...NE winds 10 to 15 kt. Seas 2 to 3 ft. A chance of showers
with a slight chance of tstms.
.THU 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.

$$

AMZ352-242300-
Waters from Edisto Beach SC to Savannah GA out 20 NM-
650 AM EDT Sun Aug 24 2025

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

Winds and seas higher in and near tstms.

$$

AMZ354-242300-
Waters from Savannah GA to Altamaha Sound GA out 20 NM, including
Grays Reef National Marine Sanctuary-
650 AM EDT Sun Aug 24 2025

.TODAY...N winds 5 to 10 kt, becoming NE late. Seas 2 to 3 ft.
Wave Detail: NE 3 ft at 6 seconds and E 2 ft at 13 seconds. A
chance of showers with a slight chance of tstms.
.TONIGHT...SW winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: E
2 ft at 7 seconds and E 2 ft at 13 seconds. A slight chance of
tstms. A chance of showers, mainly in the evening.
.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.
.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. A slight chance of tstms in the evening. A slight
chance of showers.
.TUE...N winds 5 to 10 kt, becoming NE in the afternoon. Seas
2 ft. Wave Detail: E 2 ft at 12 seconds and SW 1 foot at
3 seconds. A slight chance of showers in the afternoon.
.TUE NIGHT...E winds 5 to 10 kt, becoming N after midnight. Seas
2 ft. Wave Detail: E 2 ft at 12 seconds and S 1 foot at
4 seconds. A slight chance of showers.
.WED...NE winds 10 to 15 kt. Seas 2 to 3 ft. A chance of showers
and tstms.
.WED NIGHT...E winds 10 to 15 kt. Seas 2 to 3 ft. A slight chance
of showers and tstms.
.THU...NE winds 15 kt. Seas 2 to 3 ft. A chance of showers and
tstms.
.THU NIGHT...NE winds 10 to 15 kt. Seas 2 to 3 ft. A chance of
showers with a slight chance of tstms.

Winds and seas higher in and near tstms.

$$

AMZ374-242300-
Waters from Savannah GA to Altamaha Sound GA from 20 to 60 NM-
650 AM EDT Sun Aug 24 2025

.TODAY...N winds 5 to 10 kt. Seas 3 to 4 ft. Wave Detail: E 3 ft
at 7 seconds and E 3 ft at 12 seconds. A slight chance of tstms.
Showers likely, mainly this morning.
.TONIGHT...SW winds 5 to 10 kt. Seas 3 to 4 ft. Wave Detail: E
3 ft at 13 seconds and E 2 ft at 7 seconds. A chance of showers
with a slight chance of tstms.
.MON...W winds 5 to 10 kt. Seas 3 to 4 ft. Wave Detail: E 3 ft at
13 seconds and SE 1 foot at 8 seconds. A chance of showers. A
chance of tstms, mainly in the morning.
.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 tstms. A slight chance of showers in the
evening, then a chance of showers after midnight.
.TUE...NW winds 5 to 10 kt, becoming N in the afternoon. Seas
2 to 3 ft. Wave Detail: E 3 ft at 12 seconds and W 1 foot at
3 seconds. A chance of showers, mainly in the morning.
.TUE NIGHT...NE winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: E
2 ft at 12 seconds and SW 1 foot at 3 seconds. A slight chance of
showers in the evening, then a chance of showers with a slight
chance of tstms after midnight.
.WED...NE winds 10 to 15 kt. Seas 2 to 3 ft. A chance of showers
with a slight chance of tstms.
.WED NIGHT...NE winds 10 to 15 kt. Seas 3 ft. A chance of showers
with a slight chance of tstms.
.THU...NE winds 10 to 15 kt. Seas 3 ft. A chance of showers and
tstms.
.THU 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.

$$