405
FZUS52 KCHS 282310
CWFCHS

Coastal Waters Forecast
National Weather Service Charleston SC
710 PM EDT Thu Aug 28 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

AMZ300-291215-
710 PM EDT Thu Aug 28 2025

.Synopsis for the coastal waters of south coastal South Carolina
and north coastal Georgia...
High pressure will extend across the area as a stationary front
lingers well to the south and offshore.

$$

AMZ330-291215-
Charleston Harbor-
710 PM EDT Thu Aug 28 2025

.TONIGHT...E winds 5 to 10 kt, becoming NE late.
.FRI...N winds 5 kt, becoming E in the afternoon.
.FRI NIGHT...SE winds 5 to 10 kt.
.SAT...E winds 5 kt, increasing to 10 kt in the afternoon. A
slight chance of showers in the morning, then a chance of showers
and tstms in the afternoon.
.SAT NIGHT...E winds 5 to 10 kt. A chance of showers and tstms.
.SUN...NE winds 10 to 15 kt with gusts to 20 kt. A chance of
showers and tstms.
.SUN NIGHT...NE winds 10 to 15 kt with gusts to 20 kt. A chance
of showers and tstms.
.MON...NE winds 15 to 20 kt. Waves 1 to 2 ft. A chance of showers
and tstms.
.MON NIGHT...NE winds 15 to 20 kt. Waves 1 to 2 ft. A chance of
showers and tstms.
.TUE...NE winds 10 to 15 kt. A chance of showers and tstms.
.TUE NIGHT...NE winds 10 to 15 kt. A chance of showers with a
slight chance of tstms.

Winds and waves higher in and near tstms.

Unless otherwise noted, waves 1 foot or less.

Charleston Harbor water temperature 83 degrees.

$$

AMZ350-291215-
Waters from South Santee River to Edisto Beach SC out 20 NM-
710 PM EDT Thu Aug 28 2025

.TONIGHT...NE winds 5 to 10 kt. Seas 2 ft. Wave Detail: E 2 ft at
5 seconds and SE 1 foot at 9 seconds.
.FRI...N winds 5 to 10 kt, becoming E in the afternoon. Seas
2 ft. Wave Detail: E 2 ft at 5 seconds and SE 1 foot at
9 seconds.
.FRI NIGHT...SE winds 5 to 10 kt. Seas 2 ft. Wave Detail: E 2 ft
at 5 seconds and SE 1 foot at 8 seconds.
.SAT...E winds 5 to 10 kt. Seas 2 ft. Wave Detail: E 2 ft at
5 seconds and SE 1 foot at 8 seconds. A slight chance of showers
in the morning, then a chance of showers with a slight chance of
tstms in the afternoon.
.SAT NIGHT...E winds 10 to 15 kt. Seas 2 to 3 ft. Wave Detail: E
2 ft at 4 seconds and SE 1 foot at 8 seconds. A chance of showers
and tstms.
.SUN...NE winds 10 to 15 kt, becoming E 15 to 20 kt in the
afternoon. Seas 2 to 3 ft, building to 3 to 4 ft in the
afternoon. Wave Detail: E 3 ft at 5 seconds and SE 1 foot at
8 seconds, becoming E 4 ft at 5 seconds and SE 1 foot at
8 seconds. A chance of showers and tstms.
.SUN NIGHT...NE winds 15 to 20 kt. Seas 4 to 5 ft. A chance of
showers and tstms.
.MON...NE winds 15 to 20 kt. Seas 4 to 5 ft. A chance of showers
and tstms.
.MON NIGHT...NE winds 15 to 20 kt. Seas 4 to 5 ft. A chance of
showers and tstms.
.TUE...NE winds 15 to 20 kt. Seas 4 to 5 ft. A chance of showers
and tstms.
.TUE NIGHT...NE winds 15 to 20 kt. Seas 4 to 5 ft. A chance of
showers and tstms.

Winds and seas higher in and near tstms.

$$

AMZ352-291215-
Waters from Edisto Beach SC to Savannah GA out 20 NM-
710 PM EDT Thu Aug 28 2025

.TONIGHT...E winds 5 to 10 kt. Seas 2 ft. Wave Detail: NE 2 ft at
5 seconds and SE 1 foot at 9 seconds.
.FRI...NE winds 5 to 10 kt. Seas 2 ft. Wave Detail: E 2 ft at
5 seconds and SE 1 foot at 9 seconds.
.FRI NIGHT...SE winds 5 to 10 kt. Seas 2 ft. Wave Detail: E
1 foot at 5 seconds and SE 1 foot at 8 seconds. A slight chance
of showers and tstms after midnight.
.SAT...E winds 5 to 10 kt. Seas 2 ft. Wave Detail: E 2 ft at
5 seconds and SE 1 foot at 8 seconds. A chance of showers. A
slight chance of tstms in the morning, then a chance of tstms in
the afternoon.
.SAT NIGHT...E winds 10 to 15 kt. Seas 2 to 3 ft. Wave Detail: E
2 ft at 4 seconds and SE 1 foot at 8 seconds. A chance of showers
and tstms.
.SUN...NE winds 10 to 15 kt, increasing to 15 to 20 kt in the
afternoon. Seas 2 to 3 ft, building to 3 to 4 ft in the
afternoon. Wave Detail: E 3 ft at 6 seconds, becoming E 3 ft at
5 seconds and SE 1 foot at 8 seconds. A chance of showers and
tstms.
.SUN NIGHT...E winds 15 to 20 kt. Seas 3 to 4 ft. A chance of
showers and tstms.
.MON...NE winds 15 to 20 kt. Seas 4 to 5 ft. A chance of showers
and tstms.
.MON NIGHT...NE winds 15 to 20 kt. Seas 4 to 5 ft. A chance of
showers and tstms.
.TUE...NE winds 15 to 20 kt. Seas 4 to 5 ft. A chance of showers
and tstms.
.TUE NIGHT...NE winds 15 to 20 kt. Seas 4 to 5 ft. A chance of
showers and tstms.

Winds and seas higher in and near tstms.

$$

AMZ354-291215-
Waters from Savannah GA to Altamaha Sound GA out 20 NM, including
Grays Reef National Marine Sanctuary-
710 PM EDT Thu Aug 28 2025

.TONIGHT...E winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: E
2 ft at 5 seconds and E 1 foot at 9 seconds. A slight chance of
showers and tstms.
.FRI...NE winds 5 to 10 kt. Seas 2 ft. Wave Detail: E 2 ft at
5 seconds and E 1 foot at 9 seconds. A slight chance of showers
and tstms.
.FRI NIGHT...E winds 5 to 10 kt. Seas 2 ft. Wave Detail: E 2 ft
at 5 seconds and SE 1 foot at 9 seconds. A slight chance of
showers and tstms in the evening, then a chance of showers and
tstms after midnight.
.SAT...E winds 5 to 10 kt, increasing to 10 to 15 kt in the
afternoon. Seas 2 ft. Wave Detail: E 2 ft at 5 seconds and SE
1 foot at 8 seconds. A chance of showers and tstms.
.SAT NIGHT...E winds 10 to 15 kt. Seas 2 to 3 ft. Wave Detail: E
2 ft at 5 seconds and SE 1 foot at 8 seconds. A chance of showers
and tstms.
.SUN...NE winds 10 to 15 kt, increasing to 15 to 20 kt in the
afternoon. Seas 2 to 3 ft, building to 3 to 4 ft in the
afternoon. Wave Detail: E 3 ft at 6 seconds, becoming E 3 ft at
5 seconds and SE 1 foot at 8 seconds. A chance of showers and
tstms.
.SUN NIGHT...E winds 15 to 20 kt. Seas 3 to 4 ft. A chance of
showers and tstms.
.MON...NE winds 15 to 20 kt. Seas 4 to 5 ft. A chance of showers
and tstms.
.MON NIGHT...NE winds 15 to 20 kt. Seas 4 to 5 ft. A chance of
showers and tstms.
.TUE...NE winds 15 to 20 kt. Seas 4 to 5 ft. A chance of showers
and tstms.
.TUE NIGHT...NE winds 15 to 20 kt. Seas 4 to 5 ft. A chance of
showers and tstms.

Winds and seas higher in and near tstms.

$$

AMZ374-291215-
Waters from Savannah GA to Altamaha Sound GA from 20 to 60 NM-
710 PM EDT Thu Aug 28 2025

.TONIGHT...NE winds 10 kt. Seas 2 to 3 ft. Wave Detail: E 2 ft at
5 seconds and SE 1 foot at 9 seconds. A slight chance of showers
and tstms.
.FRI...NE winds 10 kt. Seas 2 to 3 ft. Wave Detail: E 2 ft at
5 seconds and E 1 foot at 8 seconds. A chance of showers with a
slight chance of tstms.
.FRI NIGHT...E winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: E
2 ft at 5 seconds and E 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.
.SAT...E winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: E 2 ft at
5 seconds and E 1 foot at 8 seconds. A chance of showers and
tstms.
.SAT NIGHT...E winds 10 to 15 kt. Seas 2 to 3 ft. Wave Detail: E
2 ft at 5 seconds and SE 1 foot at 8 seconds. A chance of showers
and tstms.
.SUN...E winds 10 to 15 kt, becoming NE 15 to 20 kt in the
afternoon. Seas 3 to 4 ft. Wave Detail: E 4 ft at 6 seconds. A
chance of tstms. Showers likely, mainly in the morning.
.SUN NIGHT...NE winds 15 to 20 kt with gusts to 25 kt. Seas 4 to
5 ft. A chance of tstms. A chance of showers in the evening, then
showers likely after midnight.
.MON...NE winds 20 kt. Seas 4 to 5 ft. Showers likely with a
chance of tstms.
.MON NIGHT...NE winds 15 to 20 kt. Seas 5 to 6 ft. Showers likely
with a chance of tstms.
.TUE...NE winds 15 to 20 kt. Seas 5 ft. Showers likely with a
chance of tstms.
.TUE NIGHT...NE winds 15 kt. Seas 4 to 5 ft. Showers likely with
a chance of tstms.

Winds and seas higher in and near tstms.

$$