961
FZUS52 KCHS 191847
CWFCHS

Coastal Waters Forecast
National Weather Service Charleston SC
247 PM EDT Sat Jul 19 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

AMZ300-200700-
247 PM EDT Sat Jul 19 2025

.Synopsis for the coastal waters of south coastal South Carolina
and north coastal Georgia...
High pressure will prevail in the Atlantic through early next
week, with surface troughing inland. A front could stall nearby
in the middle of next week.

$$

AMZ330-200700-
Charleston Harbor-
247 PM EDT Sat Jul 19 2025

.TONIGHT...SW winds 10 to 15 kt.
.SUN...W winds 10 to 15 kt. A slight chance of showers and tstms
in the afternoon.
.SUN NIGHT...SW winds 10 to 15 kt with gusts to 20 kt,
diminishing to 5 to 10 kt after midnight. A slight chance of
showers and tstms.
.MON...W winds 5 to 10 kt. A chance of showers and tstms in the
afternoon.
.MON NIGHT...SW winds 5 to 10 kt, becoming NW after midnight. A
chance of showers and tstms.
.TUE...NE winds 5 kt, becoming E in the afternoon. A chance of
showers and tstms in the morning, then showers and tstms likely
in the afternoon.
.TUE NIGHT...E winds 5 to 10 kt. Showers likely with a chance of
tstms.
.WED...NE winds 10 to 15 kt. A chance of showers with a slight
chance of tstms.
.WED NIGHT...E winds 10 to 15 kt. A chance of showers.
.THU...NE winds 10 to 15 kt. A chance of showers and tstms.
.THU NIGHT...SE winds 5 to 10 kt. A slight chance of showers and
tstms.

Winds and waves higher in and near tstms.

Unless otherwise noted, waves 1 foot or less.

Charleston Harbor water temperature 87 degrees.

$$

AMZ350-200700-
Waters from South Santee River to Edisto Beach SC out 20 NM-
247 PM EDT Sat Jul 19 2025

.TONIGHT...SW winds 15 kt with gusts to 20 kt. Seas 3 to 4 ft.
Wave Detail: SW 3 ft at 4 seconds and SE 3 ft at 8 seconds.
.SUN...SW winds 10 to 15 kt. Seas 3 to 4 ft. Wave Detail: SW 3 ft
at 5 seconds and SE 2 ft at 8 seconds. A slight chance of showers
and tstms in the afternoon.
.SUN NIGHT...SW winds 10 to 15 kt with gusts to 20 kt. Seas 3 to
4 ft. Wave Detail: SW 3 ft at 5 seconds and SE 2 ft at 8 seconds.
A slight chance of showers and tstms.
.MON...SW winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: S 3 ft
at 5 seconds and SE 2 ft at 8 seconds. A slight chance of showers
and tstms in the morning, then a chance of showers and tstms in
the afternoon.
.MON NIGHT...SW winds 5 to 10 kt, becoming NW after midnight.
Seas 2 to 3 ft. Wave Detail: S 2 ft at 5 seconds and SE 2 ft at
8 seconds. A chance of showers and tstms.
.TUE...NE winds 5 to 10 kt, increasing to 10 to 15 kt in the
afternoon. Seas 2 ft. Wave Detail: SE 2 ft at 8 seconds and NE
1 foot at 2 seconds. A chance of showers and tstms in the
morning, then showers and tstms likely in the afternoon.
.TUE NIGHT...E winds 10 to 15 kt. Seas 2 to 3 ft. Showers likely
with a chance of tstms.
.WED...NE winds 15 to 20 kt. Seas 3 to 4 ft. A chance of showers
with a slight chance of tstms.
.WED NIGHT...E winds 15 to 20 kt. Seas 4 to 5 ft. A chance of
showers with a slight chance of tstms.
.THU...NE winds 10 to 15 kt. Seas 4 to 5 ft. A chance of showers
and tstms.
.THU NIGHT...SE winds 5 to 10 kt. Seas 4 to 5 ft. A chance of
showers and tstms.

Winds and seas higher in and near tstms.

$$

AMZ352-200700-
Waters from Edisto Beach SC to Savannah GA out 20 NM-
247 PM EDT Sat Jul 19 2025

.TONIGHT...SW winds 10 to 15 kt. Seas 3 ft. Wave Detail: SE 3 ft
at 8 seconds and S 2 ft at 4 seconds.
.SUN...W winds 10 kt, becoming SW with gusts to 20 kt in the
afternoon. Seas 2 to 3 ft. Wave Detail: S 2 ft at 5 seconds and
SE 2 ft at 8 seconds. A slight chance of showers and tstms in the
afternoon.
.SUN NIGHT...SW winds 10 to 15 kt. Seas 2 to 3 ft. Wave Detail: S
2 ft at 4 seconds and SE 2 ft at 8 seconds. A slight chance of
showers and tstms.
.MON...W winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: S 2 ft at
5 seconds and SE 2 ft at 8 seconds. A slight chance of showers
and tstms in the morning, then a chance of showers and tstms in
the afternoon.
.MON NIGHT...SW winds 5 to 10 kt, becoming W after midnight. Seas
2 ft. Wave Detail: S 2 ft at 5 seconds and SE 1 foot at
8 seconds. A chance of showers and tstms.
.TUE...N winds 5 kt, becoming NE in the afternoon. Seas 2 ft.
Wave Detail: NE 1 foot at 2 seconds and S 1 foot at 5 seconds. A
chance of showers and tstms in the morning, then showers and
tstms likely in the afternoon.
.TUE NIGHT...E winds 10 kt. Seas 2 ft. Showers likely. Tstms
likely, mainly in the evening.
.WED...NE winds 10 to 15 kt. Seas 3 to 4 ft. Showers likely with
a chance of tstms.
.WED NIGHT...E winds 10 to 15 kt. Seas 3 to 4 ft. A chance of
showers with a slight chance of tstms.
.THU...NE winds 10 kt. Seas 3 to 4 ft. A chance of showers and
tstms.
.THU NIGHT...SE winds 5 to 10 kt. Seas 3 to 4 ft. A chance of
showers with a slight chance of tstms.

Winds and seas higher in and near tstms.

$$

AMZ354-200700-
Waters from Savannah GA to Altamaha Sound GA out 20 NM, including
Grays Reef National Marine Sanctuary-
247 PM EDT Sat Jul 19 2025

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

Winds and seas higher in and near tstms.

$$

AMZ374-200700-
Waters from Savannah GA to Altamaha Sound GA from 20 to 60 NM-
247 PM EDT Sat Jul 19 2025

.TONIGHT...S winds 10 kt, becoming SW with gusts to 20 kt after
midnight. Seas 3 to 4 ft. Wave Detail: S 3 ft at 4 seconds and SE
3 ft at 8 seconds.
.SUN...SW winds 10 to 15 kt. Seas 3 to 4 ft. Wave Detail: SW 3 ft
at 4 seconds and SE 2 ft at 8 seconds.
.SUN NIGHT...SW winds 10 to 15 kt with gusts to 20 kt. Seas 3 ft.
Wave Detail: S 3 ft at 4 seconds and SE 2 ft at 8 seconds. A
slight chance of showers and tstms.
.MON...SW winds 10 to 15 kt. Seas 2 to 3 ft. Wave Detail: SW 3 ft
at 5 seconds and SE 2 ft at 8 seconds. A slight chance of showers
and tstms.
.MON NIGHT...SW winds 10 kt. Seas 2 to 3 ft. Wave Detail: S 2 ft
at 4 seconds and SE 2 ft at 8 seconds. A chance of showers and
tstms.
.TUE...NW winds 5 to 10 kt, becoming NE in the afternoon. Seas
2 to 3 ft. Wave Detail: SW 2 ft at 5 seconds and SE 2 ft at
8 seconds. A chance of showers and tstms.
.TUE NIGHT...E winds 5 to 10 kt. Seas 2 ft. A chance of tstms.
Showers.
.WED...NE winds 10 to 15 kt. Seas 2 to 3 ft. Showers likely with
a chance of tstms.
.WED NIGHT...E winds 10 to 15 kt. Seas 4 to 5 ft. Showers likely
with a slight chance of tstms.
.THU...NE winds 10 kt. Seas 4 to 6 ft. Showers likely with a
chance of tstms.
.THU NIGHT...SE winds 10 kt. Seas 4 to 6 ft. A chance of showers
and tstms.

Winds and seas higher in and near tstms.

$$