844
FZUS52 KCHS 101549
CWFCHS

Coastal Waters Forecast
National Weather Service Charleston SC
1149 AM EDT Wed Sep 10 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

AMZ300-110400-
1149 AM EDT Wed Sep 10 2025

.Synopsis for the coastal waters of south coastal South Carolina
and north coastal Georgia...
Surface high pressure will prevail into the weekend.

$$

AMZ330-110400-
Charleston Harbor-
1149 AM EDT Wed Sep 10 2025

.THIS AFTERNOON...N winds 5 to 10 kt.
.TONIGHT...N winds 5 kt.
.THU...N winds 5 to 10 kt.
.THU NIGHT...NE winds 5 to 10 kt.
.FRI...NE winds 10 to 15 kt.
.FRI NIGHT...NE winds 10 to 15 kt.
.SAT...NE winds 10 to 15 kt.
.SAT NIGHT...NE winds 10 to 15 kt.
.SUN...NE winds 10 kt.
.SUN NIGHT...NE winds 5 to 10 kt.

Unless otherwise noted, waves 1 foot or less.

Charleston Harbor water temperature 78 degrees.

$$

AMZ350-110400-
Waters from South Santee River to Edisto Beach SC out 20 NM-
1149 AM EDT Wed Sep 10 2025

.THIS AFTERNOON...N winds 10 to 15 kt with gusts to 20 kt. Seas
4 to 5 ft. Wave Detail: E 5 ft at 8 seconds.
.TONIGHT...N winds 5 to 10 kt. Seas 3 to 4 ft. Wave Detail: E
4 ft at 8 seconds.
.THU...N winds 10 to 15 kt. Seas 3 to 4 ft. Wave Detail: E 3 ft
at 8 seconds.
.THU NIGHT...NE winds 10 to 15 kt. Seas 3 ft. Wave Detail: E 3 ft
at 8 seconds.
.FRI...NE winds 15 to 20 kt. Seas 3 to 4 ft. Wave Detail: NE 4 ft
at 5 seconds and E 3 ft at 8 seconds. A slight chance of showers
and tstms in the afternoon.
.FRI NIGHT...NE winds 15 to 20 kt with gusts to 25 kt. Seas 4 to
5 ft. Wave Detail: E 5 ft at 7 seconds. A slight chance of
showers and tstms.
.SAT...NE winds 15 to 20 kt. Seas 4 to 5 ft. A slight chance of
showers and tstms.
.SAT NIGHT...NE winds 15 to 20 kt. Seas 4 to 5 ft. A slight
chance of showers and tstms.
.SUN...NE winds 15 kt. Seas 4 to 5 ft.
.SUN NIGHT...NE winds 10 to 15 kt. Seas 3 to 4 ft.

Winds and seas higher in and near tstms.

$$

AMZ352-110400-
Waters from Edisto Beach SC to Savannah GA out 20 NM-
1149 AM EDT Wed Sep 10 2025

.THIS AFTERNOON...N winds 10 to 15 kt with gusts to 20 kt,
becoming NE 5 to 10 kt late. Seas 4 to 5 ft, subsiding to 3 to
4 ft. Wave Detail: E 4 ft at 8 seconds.
.TONIGHT...NE winds 5 to 10 kt. Seas 3 to 4 ft. Wave Detail: E
4 ft at 8 seconds.
.THU...NE winds 10 to 15 kt. Seas 3 ft. Wave Detail: E 3 ft at
8 seconds.
.THU NIGHT...NE winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: E
3 ft at 8 seconds.
.FRI...NE winds 10 to 15 kt with gusts to 20 kt. Seas 2 to 3 ft,
building to 3 to 4 ft in the afternoon. Wave Detail: E 3 ft at
8 seconds, becoming NE 3 ft at 5 seconds and E 2 ft at 8 seconds.
.FRI NIGHT...NE winds 15 to 20 kt. Seas 3 to 4 ft. Wave Detail: E
4 ft at 7 seconds.
.SAT...NE winds 15 to 20 kt. Seas 4 to 5 ft.
.SAT NIGHT...NE winds 15 to 20 kt. Seas 4 to 5 ft.
.SUN...NE winds 10 to 15 kt. Seas 3 to 4 ft.
.SUN NIGHT...NE winds 10 to 15 kt. Seas 3 to 4 ft.

$$

AMZ354-110400-
Waters from Savannah GA to Altamaha Sound GA out 20 NM, including
Grays Reef National Marine Sanctuary-
1149 AM EDT Wed Sep 10 2025

.THIS AFTERNOON...N winds 15 to 20 kt, becoming NE 10 to 15 kt
late. Seas 4 to 5 ft. Wave Detail: NE 5 ft at 8 seconds.
.TONIGHT...NE winds 5 to 10 kt. Seas 3 to 4 ft. Wave Detail: E
4 ft at 8 seconds.
.THU...NE winds 10 to 15 kt. Seas 3 ft. Wave Detail: E 3 ft at
8 seconds.
.THU NIGHT...NE winds 10 to 15 kt. Seas 2 to 3 ft. Wave Detail: E
3 ft at 8 seconds.
.FRI...NE winds 10 to 15 kt with gusts to 20 kt. Seas 3 to 4 ft.
Wave Detail: E 3 ft at 8 seconds.
.FRI NIGHT...NE winds 15 to 20 kt. Seas 3 to 4 ft. Wave Detail: E
4 ft at 7 seconds.
.SAT...NE winds 15 to 20 kt. Seas 4 to 5 ft. A slight chance of
showers and tstms.
.SAT NIGHT...NE winds 15 to 20 kt. Seas 4 to 5 ft.
.SUN...NE winds 15 kt. Seas 4 to 5 ft.
.SUN NIGHT...NE winds 10 to 15 kt. Seas 3 to 4 ft.

Winds and seas higher in and near tstms.

$$

AMZ374-110400-
Waters from Savannah GA to Altamaha Sound GA from 20 to 60 NM-
1149 AM EDT Wed Sep 10 2025

...SMALL CRAFT ADVISORY IN EFFECT UNTIL 8 PM EDT THIS EVENING...

.THIS AFTERNOON...N winds 15 to 20 kt, becoming NE 10 to 15 kt
late. Seas 5 to 6 ft, subsiding to 4 to 6 ft. Wave Detail: NE
6 ft at 8 seconds.
.TONIGHT...NE winds 5 to 10 kt. Seas 4 to 5 ft, subsiding to 3 to
4 ft after midnight. Wave Detail: NE 5 ft at 8 seconds, becoming
NE 4 ft at 8 seconds.
.THU...N winds 10 to 15 kt. Seas 3 to 4 ft. Wave Detail: NE 4 ft
at 8 seconds.
.THU NIGHT...NE winds 10 to 15 kt. Seas 3 to 4 ft. Wave Detail:
NE 4 ft at 8 seconds. A slight chance of showers.
.FRI...NE winds 15 to 20 kt. Seas 3 to 4 ft, building to 4 to
5 ft in the afternoon. Wave Detail: E 4 ft at 8 seconds and NE
3 ft at 5 seconds, becoming E 4 ft at 7 seconds. A slight chance
of showers and tstms.
.FRI NIGHT...NE winds 15 to 20 kt with gusts to 25 kt. Seas 4 to
5 ft. Wave Detail: NE 5 ft at 7 seconds. A chance of showers with
a slight chance of tstms.
.SAT...NE winds 20 kt. Seas 5 to 6 ft. A chance of showers with a
slight chance of tstms.
.SAT NIGHT...NE winds 15 to 20 kt. Seas 5 to 6 ft. A slight
chance of showers and tstms.
.SUN...NE winds 15 to 20 kt. Seas 5 to 6 ft. A slight chance of
showers and tstms.
.SUN NIGHT...NE winds 10 to 15 kt. Seas 4 to 5 ft. A slight
chance of showers.

Winds and seas higher in and near tstms.

$$