975
FZUS52 KCHS 271750
CWFCHS

Coastal Waters Forecast
National Weather Service Charleston SC
149 PM EDT Wed Aug 27 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

AMZ300-280600-
149 PM EDT Wed Aug 27 2025

.Synopsis for the coastal waters of south coastal South Carolina
and north coastal Georgia...
Expect dry and cool conditions as high pressure prevails through
Thursday. Thereafter, a stationary front should remain to the
south of the region through the weekend, and cause for unsettled
conditions to return on Friday.

$$

AMZ330-280600-
Charleston Harbor-
149 PM EDT Wed Aug 27 2025

.THIS AFTERNOON...E winds 10 kt.
.TONIGHT...E winds 5 to 10 kt.
.THU...E winds 5 to 10 kt.
.THU NIGHT...E winds 5 to 10 kt.
.FRI...E winds 5 to 10 kt. A slight chance of showers and tstms
in the afternoon.
.FRI NIGHT...SE winds 5 to 10 kt. A slight chance of showers and
tstms.
.SAT...E winds 5 to 10 kt. A chance of showers and tstms.
.SAT NIGHT...E winds 5 to 10 kt. A chance of showers and tstms.
.SUN...NE winds 10 to 15 kt. A chance of showers and tstms.
.SUN NIGHT...NE winds 10 to 15 kt. A 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 83 degrees.

$$

AMZ350-280600-
Waters from South Santee River to Edisto Beach SC out 20 NM-
149 PM EDT Wed Aug 27 2025

.THIS AFTERNOON...NE winds 10 to 15 kt. Seas 2 to 3 ft. Wave
Detail: NE 2 ft at 4 seconds and SE 1 foot at 10 seconds.
.TONIGHT...E winds 10 kt. Seas 2 to 3 ft. Wave Detail: NE 2 ft at
4 seconds and SE 1 foot at 10 seconds.
.THU...E winds 10 kt. Seas 2 ft. Wave Detail: NE 2 ft at
4 seconds and SE 1 foot at 9 seconds.
.THU 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.
.FRI...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.
A slight chance of tstms in the afternoon.
.FRI NIGHT...SE winds 5 to 10 kt. Seas 2 ft. Wave Detail: E 2 ft
at 5 seconds and SE 2 ft 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 10 to 15 kt. Seas 2 to 3 ft. A chance of showers
and tstms.
.SAT NIGHT...E winds 10 to 15 kt. Seas 2 to 3 ft. A chance of
showers and tstms.
.SUN...NE winds 15 to 20 kt. Seas 4 to 5 ft. A chance of showers
and tstms.
.SUN NIGHT...NE winds 20 kt. Seas 4 to 6 ft. Showers likely with
a chance of tstms.

Winds and seas higher in and near tstms.

$$

AMZ352-280600-
Waters from Edisto Beach SC to Savannah GA out 20 NM-
149 PM EDT Wed Aug 27 2025

.THIS AFTERNOON...NE winds 10 kt. Seas 2 to 3 ft. Wave Detail: E
2 ft at 5 seconds and SE 1 foot at 10 seconds.
.TONIGHT...E winds 10 kt. Seas 2 to 3 ft. Wave Detail: E 2 ft at
5 seconds and SE 1 foot at 10 seconds.
.THU...E winds 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 in the
afternoon.
.THU NIGHT...E winds 5 to 10 kt. Seas 2 ft. Wave Detail: NE 2 ft
at 5 seconds and SE 1 foot at 9 seconds. A slight chance of
showers. A slight chance of tstms after midnight.
.FRI...E winds 5 to 10 kt. Seas 2 ft. Wave Detail: E 2 ft at
6 seconds and SE 1 foot at 9 seconds. A slight chance of showers
and tstms.
.FRI NIGHT...SE winds 5 to 10 kt. Seas 2 ft. Wave Detail: E 2 ft
at 7 seconds. A chance of showers and tstms.
.SAT...E winds 10 to 15 kt. Seas 2 to 3 ft. Showers likely with a
chance of tstms.
.SAT NIGHT...E winds 10 to 15 kt. Seas 2 to 3 ft. Showers likely
with a chance of tstms.
.SUN...NE winds 15 to 20 kt. Seas 3 to 4 ft. Showers likely with
a chance of tstms.
.SUN NIGHT...NE winds 15 to 20 kt. Seas 4 to 5 ft. Showers likely
with a chance of tstms.

Winds and seas higher in and near tstms.

$$

AMZ354-280600-
Waters from Savannah GA to Altamaha Sound GA out 20 NM, including
Grays Reef National Marine Sanctuary-
149 PM EDT Wed Aug 27 2025

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

Winds and seas higher in and near tstms.

$$

AMZ374-280600-
Waters from Savannah GA to Altamaha Sound GA from 20 to 60 NM-
149 PM EDT Wed Aug 27 2025

.THIS AFTERNOON...NE winds 10 kt. Seas 3 ft. Wave Detail: NE 2 ft
at 4 seconds and SE 1 foot at 10 seconds. A slight chance of
showers and tstms.
.TONIGHT...E winds 10 kt. Seas 3 ft. Wave Detail: NE 2 ft at
4 seconds and SE 1 foot at 10 seconds. A slight chance of tstms.
A slight chance of showers in the evening, then a chance of
showers after midnight.
.THU...E winds 10 kt. Seas 3 ft. Wave Detail: NE 2 ft at
5 seconds and SE 1 foot at 9 seconds. A chance of showers with a
slight chance of tstms in the morning, then a slight chance of
showers in the afternoon. Vsby 1 to 3 NM in the morning.
.THU NIGHT...E winds 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 tstms.
A slight chance of showers in the evening, then a chance of
showers after midnight.
.FRI...E winds 10 kt. Seas 2 to 3 ft. Wave Detail: E 2 ft at
6 seconds and SE 1 foot at 9 seconds. A chance of showers and
tstms.
.FRI NIGHT...E winds 10 kt. Seas 2 to 3 ft. Wave Detail: E 2 ft
at 7 seconds. A chance of showers and tstms.
.SAT...E winds 10 kt. Seas 2 to 3 ft. Showers likely with a
chance of tstms.
.SAT NIGHT...E winds 10 kt. Seas 3 ft. Showers likely with a
chance of tstms.
.SUN...NE winds 10 to 15 kt. Seas 3 to 4 ft. Showers likely with
a chance of tstms.
.SUN NIGHT...NE winds 15 kt. Seas 3 to 4 ft. Showers likely with
a chance of tstms.

Winds and seas higher in and near tstms.

$$