811
FZUS52 KCHS 091947
CWFCHS

Coastal Waters Forecast
National Weather Service Charleston SC
347 PM EDT Fri May 9 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

AMZ300-100800-
347 PM EDT Fri May 9 2025

.Synopsis for the coastal waters of south coastal South Carolina
and north coastal Georgia...
A front will remain stalled near our area through early next
week, bringing unsettled weather. Low pressure will slowly move
through Monday into Tuesday, followed by High pressure.

$$

AMZ330-100800-
Charleston Harbor-
347 PM EDT Fri May 9 2025

.TONIGHT...S winds 10 kt, becoming SW late this evening, then
becoming N late. A chance of showers and tstms.
.SAT...NE winds 10 to 15 kt. A slight chance of tstms. Showers.
.SAT NIGHT...E winds 10 to 15 kt. Showers with a slight chance of
tstms.
.SUN...SE winds 10 kt. A slight chance of tstms. Showers.
.SUN NIGHT...SE winds 10 kt. Showers likely with a slight chance
of tstms.
.MON...SE winds 10 to 15 kt with gusts to 20 kt. Showers with a
chance of tstms.
.MON NIGHT...SE winds 10 to 15 kt with gusts to 20 kt. Showers
with a chance of tstms.
.TUE...S winds 10 kt. Showers with a slight chance of tstms.
.TUE NIGHT...SW winds 10 kt. A chance of showers with a slight
chance of tstms.
.WED...W winds 10 to 15 kt. A chance of showers with a slight
chance of tstms.
.WED NIGHT...SW winds 10 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 76 degrees.

$$

AMZ350-100800-
Waters from South Santee River to Edisto Beach SC out 20 NM-
347 PM EDT Fri May 9 2025

.TONIGHT...SW winds 5 to 10 kt, becoming N late. Seas 2 to 3 ft,
building to 3 to 4 ft after midnight. Wave Detail: E 3 ft at
10 seconds and S 2 ft at 5 seconds, becoming S 2 ft at 5 seconds
and E 2 ft at 9 seconds. A slight chance of showers and tstms
late this evening. A chance of showers and tstms after midnight.
.SAT...NE winds 10 to 15 kt, increasing to 15 to 20 kt in the
afternoon. Seas 3 to 4 ft, building to 4 to 5 ft in the
afternoon. Wave Detail: E 3 ft at 9 seconds and S 2 ft at
4 seconds, becoming SE 4 ft at 6 seconds. A slight chance of
tstms. Showers.
.SAT NIGHT...E winds 10 to 15 kt. Seas 4 to 5 ft, subsiding to
3 to 4 ft after midnight. Wave Detail: E 4 ft at 6 seconds and S
1 foot at 5 seconds, becoming E 3 ft at 8 seconds and S 1 foot at
5 seconds. Showers with a slight chance of tstms.
.SUN...SE winds 10 kt. Seas 3 to 4 ft. Wave Detail: E 3 ft at
8 seconds and S 2 ft at 5 seconds. A slight chance of tstms.
Showers.
.SUN NIGHT...SE winds 10 to 15 kt. Seas 3 to 4 ft. Wave Detail: E
3 ft at 8 seconds and S 2 ft at 5 seconds. Showers likely with a
slight chance of tstms.
.MON...SE winds 15 kt with gusts to 20 kt. Seas 3 to 4 ft,
building to 4 to 5 ft in the afternoon. Wave Detail: SE 3 ft at
5 seconds and E 3 ft at 8 seconds, becoming SE 3 ft at 7 seconds.
Showers with a chance of tstms.
.MON NIGHT...SE winds 15 kt with gusts to 20 kt. Seas 4 to 5 ft.
Showers with a chance of tstms.
.TUE...S winds 10 to 15 kt. Seas 4 to 5 ft. Showers with a slight
chance of tstms.
.TUE NIGHT...SW winds 10 to 15 kt. Seas 4 to 5 ft. Showers likely
with a slight chance of tstms.
.WED...W winds 10 to 15 kt. Seas 3 to 4 ft. A chance of showers
with a slight chance of tstms.
.WED NIGHT...SW winds 10 to 15 kt. Seas 3 to 4 ft. A chance of
showers with a slight chance of tstms.

Winds and seas higher in and near tstms.

$$

AMZ352-100800-
Waters from Edisto Beach SC to Savannah GA out 20 NM-
347 PM EDT Fri May 9 2025

.TONIGHT...S winds 10 kt, becoming W after midnight, then
becoming N late. Seas 2 to 3 ft. Wave Detail: E 3 ft at
10 seconds and S 2 ft at 5 seconds. A slight chance of showers
and tstms early this evening, then a chance of showers and tstms
late this evening.
.SAT...NE winds 10 to 15 kt. Seas 3 to 4 ft. Wave Detail: E 3 ft
at 4 seconds and E 3 ft at 9 seconds. A slight chance of tstms.
Showers.
.SAT NIGHT...E winds 10 to 15 kt. Seas 4 to 5 ft, subsiding to
3 to 4 ft after midnight. Wave Detail: SE 3 ft at 6 seconds.
Showers with a slight chance of tstms.
.SUN...SE winds 10 kt. Seas 3 to 4 ft. Wave Detail: SE 3 ft at
6 seconds. A slight chance of tstms. Showers.
.SUN NIGHT...SE winds 10 to 15 kt. Seas 3 to 4 ft. Wave Detail: E
3 ft at 8 seconds and SE 2 ft at 5 seconds. Showers with a slight
chance of tstms.
.MON...SE winds 15 kt with gusts to 20 kt. Seas 3 to 4 ft,
building to 4 to 5 ft in the afternoon. Wave Detail: SE 3 ft at
5 seconds and E 3 ft at 8 seconds, becoming SE 3 ft at 7 seconds.
Showers with a chance of tstms.
.MON NIGHT...S winds 15 kt with gusts to 20 kt. Seas 4 to 5 ft.
Showers with a chance of tstms.
.TUE...SW winds 10 to 15 kt. Seas 4 to 5 ft. Showers likely with
a slight chance of tstms.
.TUE NIGHT...SW winds 10 to 15 kt. Seas 3 to 4 ft. A chance of
showers with a slight chance of tstms.
.WED...W winds 10 kt. Seas 3 to 4 ft. A chance of showers with a
slight chance of tstms.
.WED NIGHT...SW winds 10 kt. Seas 3 ft. A chance of showers with
a slight chance of tstms.

Winds and seas higher in and near tstms.

$$

AMZ354-100800-
Waters from Savannah GA to Altamaha Sound GA out 20 NM, including
Grays Reef National Marine Sanctuary-
347 PM EDT Fri May 9 2025

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

$$

AMZ374-100800-
Waters from Savannah GA to Altamaha Sound GA from 20 to 60 NM-
347 PM EDT Fri May 9 2025

.TONIGHT...S winds 10 to 15 kt with gusts to 25 kt, becoming W
5 to 10 kt late. Seas 3 to 4 ft. Wave Detail: E 3 ft at
10 seconds and S 2 ft at 4 seconds. A chance of showers and tstms
late this evening.
.SAT...NE winds 5 to 10 kt, becoming E 10 to 15 kt in the
afternoon. Seas 3 to 4 ft. Wave Detail: E 3 ft at 9 seconds and S
2 ft at 5 seconds. Showers with a slight chance of tstms.
.SAT NIGHT...SE winds 10 to 15 kt. Seas 4 ft. Wave Detail: E 3 ft
at 8 seconds and SE 2 ft at 4 seconds. Showers with a slight
chance of tstms.
.SUN...SE winds 10 to 15 kt. Seas 3 to 4 ft. Wave Detail: E 3 ft
at 8 seconds and SE 2 ft at 5 seconds. A slight chance of tstms.
Showers.
.SUN NIGHT...SE winds 10 to 15 kt, increasing to 15 to 20 kt
after midnight. Seas 4 to 5 ft. Wave Detail: SE 3 ft at 5 seconds
and E 3 ft at 8 seconds. Showers with a slight chance of tstms.
.MON...SE winds 15 to 20 kt. Seas 4 to 5 ft, building to 5 to
6 ft in the afternoon. Wave Detail: SE 4 ft at 7 seconds.
Showers. A slight chance of tstms in the morning, then a chance
of tstms in the afternoon.
.MON NIGHT...S winds 15 to 20 kt. Seas 5 to 6 ft. Showers with a
chance of tstms.
.TUE...SW winds 10 to 15 kt. Seas 4 to 6 ft. Showers likely with
a slight chance of tstms.
.TUE NIGHT...SW winds 10 to 15 kt. Seas 4 to 5 ft. A chance of
showers with a slight chance of tstms.
.WED...W winds 10 to 15 kt. Seas 3 to 4 ft. A slight chance of
showers.
.WED NIGHT...SW winds 10 kt. Seas 3 ft. A chance of showers with
a slight chance of tstms.

Winds and seas higher in and near tstms.

$$