793
FZUS52 KCHS 231742
CWFCHS

Coastal Waters Forecast
National Weather Service Charleston SC
142 PM EDT Sat Aug 23 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

AMZ300-240615-
142 PM EDT Sat Aug 23 2025

.Synopsis for the coastal waters of south coastal South Carolina
and north coastal Georgia...
A front will remain stalled over the region through Sunday as
waves of low pressure pass by. A much stronger cold front will
clear the area Monday night with high pressure prevailing through
the middle of next week.

$$

AMZ330-240615-
Charleston Harbor-
142 PM EDT Sat Aug 23 2025

.THIS AFTERNOON...NE winds 10 to 15 kt with gusts to 20 kt.
Showers with tstms likely.
.TONIGHT...NE winds 5 to 10 kt. A chance of tstms. Showers
likely, mainly in the evening.
.SUN...N winds 5 to 10 kt. A chance of showers and tstms.
.SUN NIGHT...SW winds 5 kt. A chance of showers and tstms in the
evening.
.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. A
slight chance of showers and tstms in the evening.
.TUE...NE winds 5 to 10 kt.
.TUE NIGHT...NE winds 5 to 10 kt.
.WED...NE winds 5 to 10 kt. A slight chance of showers and tstms.
.WED NIGHT...NE winds 5 to 10 kt.

Winds and waves higher in and near tstms.

Unless otherwise noted, waves 1 foot or less.

Charleston Harbor water temperature 83 degrees.

$$

AMZ350-240615-
Waters from South Santee River to Edisto Beach SC out 20 NM-
142 PM EDT Sat Aug 23 2025

.THIS AFTERNOON...E winds 15 to 20 kt. Seas 4 ft. Wave Detail: E
4 ft at 6 seconds and E 2 ft at 12 seconds. Showers with tstms
likely.
.TONIGHT...NE winds 15 to 20 kt, becoming N 10 to 15 kt late.
Seas 3 to 4 ft. Wave Detail:
E 4 ft at 7 seconds and E 2 ft at 12 seconds. Showers likely with
a chance of tstms.
.SUN...N winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: E 3 ft at
6 seconds and E 2 ft at 12 seconds. A chance of showers and
tstms.
.SUN NIGHT...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 chance of showers
and tstms, 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 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: SW 2 ft at 5 seconds and E 2 ft at 12 seconds.
A slight chance of showers and tstms.
.TUE...NE winds 5 to 10 kt. Seas 2 to 3 ft.
.TUE NIGHT...NE winds 5 to 10 kt. Seas 2 ft. A chance of showers
with a slight chance of 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 3 ft. A slight chance of
showers and tstms.

Winds and seas higher in and near tstms.

$$

AMZ352-240615-
Waters from Edisto Beach SC to Savannah GA out 20 NM-
142 PM EDT Sat Aug 23 2025

.THIS AFTERNOON...E winds 15 with gusts to 20 kt. Seas 3 to 4 ft.
Wave Detail:
E 3 ft at 6 seconds and E 2 ft at 12 seconds. Showers and tstms
likely.
.TONIGHT...NE winds 10 to 15 kt with gusts to 20 kt, becoming N 5
to 10 kt after midnight. Seas 3 ft. Wave Detail: E 3 ft at 6
seconds and E 1 foot at 12 seconds. Showers likely. Tstms likely,
mainly in the evening.
.SUN...N winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: E 3 ft at
7 seconds and E 1 foot at 13 seconds. A chance of tstms. Showers
likely, mainly in the morning.
.SUN NIGHT...SW winds 5 kt. Seas 2 to 3 ft. Wave Detail: E 2 ft
at 7 seconds and E 2 ft at 12 seconds. A chance of showers and
tstms, mainly in the evening.
.MON...W winds 5 kt, becoming SW in the afternoon. Seas 2 ft.
Wave Detail: E 2 ft at 5 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 12 seconds and S 1 foot at
5 seconds. A slight chance of showers and tstms in the evening.
.TUE...NE winds 5 to 10 kt. Seas 2 ft.
.TUE NIGHT...NE winds 5 to 10 kt. Seas 2 ft. A slight chance of
showers and tstms.
.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 2 to 3 ft. A slight
chance of showers and tstms.

Winds and seas higher in and near tstms.

$$

AMZ354-240615-
Waters from Savannah GA to Altamaha Sound GA out 20 NM, including
Grays Reef National Marine Sanctuary-
142 PM EDT Sat Aug 23 2025

.THIS AFTERNOON...NE winds 10 to 15 kt with gusts to 20 kt. Seas
2 to 3 ft. Wave Detail: E 3 ft at 12 seconds and SE 1 foot at 7
seconds. Tstms likely. A chance of showers early, then showers
likely late.
.TONIGHT...NE winds 5 to 10 kt, becoming N after midnight. Seas
2 to 3 ft. Wave Detail: E 3 ft at 12 seconds and E 2 ft at
6 seconds. Showers likely. Tstms likely, mainly in the evening.
.SUN...N winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: NE 2 ft
at 6 seconds and E 2 ft at 13 seconds. A chance of showers and
tstms.
.SUN NIGHT...S winds 5 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 chance of showers and tstms.
.MON...NW 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
13 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 12 seconds and S 1 foot at
4 seconds. A slight chance of showers and tstms in the evening.
.TUE...N winds 5 to 10 kt. Seas 2 ft.
.TUE NIGHT...NE winds 5 to 10 kt. Seas 2 ft. A slight chance of
showers and tstms.
.WED...NE winds 10 to 15 kt. Seas 2 to 3 ft. A chance of showers
and tstms.
.WED 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.

$$

AMZ374-240615-
Waters from Savannah GA to Altamaha Sound GA from 20 to 60 NM-
142 PM EDT Sat Aug 23 2025

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

Winds and seas higher in and near tstms.

$$