737
FZUS52 KCHS 041430
CWFCHS

Coastal Waters Forecast
National Weather Service Charleston SC
1029 AM EDT Sat Oct 4 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

AMZ300-050300-
1029 AM EDT Sat Oct 4 2025

.Synopsis for the coastal waters of south coastal South Carolina
and north coastal Georgia...
Strong high pressure will extend across the region through the
weekend and into early next week. A strong cold front will likely
cross the area later next week.

$$

AMZ330-050300-
Charleston Harbor-
1029 AM EDT Sat Oct 4 2025

.REST OF TODAY...NE winds 10 to 15 kt.
.TONIGHT...E winds 10 to 15 kt.
.SUN...E winds 10 to 15 kt with gusts to 20 kt. A slight chance
of showers and tstms.
.SUN NIGHT...E winds 10 to 15 kt with gusts to 20 kt. A slight
chance of showers and tstms in the evening.
.MON...E winds 10 to 15 kt with gusts to 20 kt.
.MON NIGHT...E winds 10 to 15 kt.
.TUE...E winds 10 kt.
.TUE NIGHT...E winds 5 to 10 kt.
.WED...NE winds 5 to 10 kt.
.WED NIGHT...NE winds 5 to 10 kt.

Winds and waves higher in and near tstms.

Unless otherwise noted, waves 1 foot or less.

Charleston Harbor water temperature 75 degrees.

$$

AMZ350-050300-
Waters from South Santee River to Edisto Beach SC out 20 NM-
1029 AM EDT Sat Oct 4 2025

...SMALL CRAFT ADVISORY IN EFFECT THROUGH TUESDAY AFTERNOON...

.REST OF TODAY...NE winds 15 to 20 kt with gusts to 25 kt. Seas
4 to 5 ft. Wave Detail: E 5 ft at 8 seconds.
.TONIGHT...E winds 15 to 20 kt with gusts to 25 kt. Seas 5 to
6 ft. Wave Detail: E 5 ft at 8 seconds and E 2 ft at 12 seconds.
A slight chance of showers and tstms after midnight.
.SUN...E winds 15 to 20 kt with gusts to 25 kt. Seas 5 to 6 ft.
Wave Detail: E 6 ft at 7 seconds and E 2 ft at 13 seconds. A
slight chance of showers and tstms.
.SUN NIGHT...E winds 15 to 20 kt with gusts to 25 kt. Seas 5 to
6 ft. Wave Detail: E 6 ft at 7 seconds and E 2 ft at 13 seconds.
A slight chance of showers and tstms in the evening.
.MON...E winds 15 to 20 kt with gusts to 25 kt. Seas 5 to 6 ft.
Wave Detail: E 6 ft at 8 seconds and E 1 foot at 13 seconds.
.MON NIGHT...E winds 15 to 20 kt with gusts to 25 kt. Seas 5 to
6 ft. Wave Detail: E 6 ft at 8 seconds and E 1 foot at
13 seconds.
.TUE...E winds 10 to 15 kt. Seas 5 to 6 ft.
.TUE NIGHT...E winds 10 to 15 kt. Seas 4 to 5 ft.
.WED...NE winds 10 to 15 kt. Seas 4 ft.
.WED NIGHT...NE winds 15 to 20 kt. Seas 4 to 5 ft. A slight
chance of showers.

Winds and seas higher in and near tstms.

$$

AMZ352-050300-
Waters from Edisto Beach SC to Savannah GA out 20 NM-
1029 AM EDT Sat Oct 4 2025

...SMALL CRAFT ADVISORY IN EFFECT THROUGH TUESDAY AFTERNOON...

.REST OF TODAY...NE winds 15 to 20 kt with gusts to 25 kt. Seas
4 to 5 ft, building to 4 to 6 ft this afternoon. Wave Detail: E
5 ft at 7 seconds. A slight chance of showers and tstms late.
.TONIGHT...E winds 15 to 20 kt with gusts to 25 kt. Seas 5 to
6 ft. Wave Detail: E 6 ft at 8 seconds. A slight chance of
showers and tstms in the evening, then a chance of tstms with a
slight chance of showers after midnight.
.SUN...E winds 15 to 20 kt with gusts to 25 kt. Seas 5 to 6 ft,
building to 5 to 7 ft in the afternoon. Wave Detail: E 6 ft at
8 seconds and E 1 foot at 13 seconds. A chance of showers and
tstms in the morning, then a chance of showers with a slight
chance of tstms in the afternoon.
.SUN NIGHT...E winds 15 to 20 kt with gusts to 25 kt. Seas 5 to
7 ft, building to 6 to 7 ft after midnight. Wave Detail: E 6 ft
at 8 seconds and E 1 foot at 14 seconds. A slight chance of
tstms. A chance of showers, mainly in the evening.
.MON...E winds 15 to 20 kt with gusts to 25 kt. Seas 5 to 7 ft,
subsiding to 5 to 6 ft in the afternoon. Wave Detail: E 6 ft at
8 seconds and E 1 foot at 14 seconds. A slight chance of tstms in
the morning. A slight chance of showers.
.MON NIGHT...E winds 15 to 20 kt with gusts to 25 kt. Seas 5 to
6 ft. Wave Detail: E 6 ft at 8 seconds and E 1 foot at
14 seconds. A slight chance of showers and tstms in the evening.
.TUE...E winds 10 to 15 kt. Seas 5 to 6 ft.
.TUE NIGHT...E winds 10 to 15 kt. Seas 4 to 5 ft.
.WED...NE winds 10 to 15 kt. Seas 4 to 5 ft.
.WED NIGHT...E winds 10 to 15 kt. Seas 4 to 5 ft.

Winds and seas higher in and near tstms.

$$

AMZ354-050300-
Waters from Savannah GA to Altamaha Sound GA out 20 NM, including
Grays Reef National Marine Sanctuary-
1029 AM EDT Sat Oct 4 2025

...SMALL CRAFT ADVISORY IN EFFECT THROUGH TUESDAY AFTERNOON...

.REST OF TODAY...NE winds 15 to 20 kt with gusts to 25 kt. Seas
5 to 6 ft. Wave Detail: E 6 ft at 12 seconds. A slight chance of
tstms. A slight chance of showers.
.TONIGHT...E winds 15 to 20 kt with gusts to 25 kt. Seas 5 to
6 ft. Wave Detail: E 6 ft at 8 seconds. A slight chance of
showers and tstms in the evening, then a chance of showers and
tstms after midnight.
.SUN...E winds 15 to 20 kt with gusts to 25 kt. Seas 5 to 6 ft,
building to 5 to 7 ft in the afternoon. Wave Detail: E 6 ft at
8 seconds, becoming E 6 ft at 8 seconds and E 2 ft at 13 seconds.
A chance of showers and tstms.
.SUN NIGHT...E winds 15 to 20 kt with gusts to 25 kt. Seas 6 to
7 ft. Wave Detail: E 6 ft at 8 seconds and E 2 ft at 13 seconds.
A chance of showers. A chance of tstms, mainly in the evening.
.MON...E winds 15 to 20 kt. Seas 6 to 7 ft, subsiding to 5 to
7 ft in the afternoon. Wave Detail: E 6 ft at 8 seconds and E
2 ft at 14 seconds. A chance of showers.
.MON NIGHT...E winds 15 to 20 kt. Seas 5 to 7 ft. Wave Detail: E
6 ft at 8 seconds and E 1 foot at 14 seconds. A chance of showers
with a slight chance of tstms in the evening, then a slight
chance of showers after midnight.
.TUE...E winds 15 kt. Seas 5 to 6 ft.
.TUE NIGHT...E winds 10 to 15 kt. Seas 4 to 6 ft.
.WED...NE winds 10 to 15 kt. Seas 4 to 5 ft.
.WED NIGHT...E winds 10 to 15 kt. Seas 4 to 5 ft.

Winds and seas higher in and near tstms.

$$

AMZ374-050300-
Waters from Savannah GA to Altamaha Sound GA from 20 to 60 NM-
1029 AM EDT Sat Oct 4 2025

...SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE TUESDAY NIGHT...

.REST OF TODAY...E winds 15 to 20 kt with gusts to 25 kt. Seas
6 to 7 ft, building to 6 to 8 ft this afternoon. Wave Detail: E
7 ft at 12 seconds. A slight chance of showers and tstms late
this morning and early afternoon, then a chance of showers and
tstms late.
.TONIGHT...E winds 15 to 20 kt with gusts to 25 kt. Seas 6 to
8 ft. Wave Detail: E 8 ft at 12 seconds and E 7 ft at 8 seconds.
A chance of showers and tstms.
.SUN...E winds 15 to 20 kt with gusts to 25 kt. Seas 6 to 8 ft,
building to 7 to 9 ft in the afternoon. Wave Detail: E 8 ft at
8 seconds, becoming E 8 ft at 8 seconds and E 3 ft at 13 seconds.
A chance of showers. A chance of tstms, mainly in the morning.
.SUN NIGHT...E winds 20 kt with gusts to 25 kt. Seas 7 to 9 ft.
Wave Detail: E 8 ft at 8 seconds and E 3 ft at 13 seconds. A
chance of showers with a slight chance of tstms.
.MON...E winds 20 kt with gusts to 25 kt. Seas 7 to 9 ft. Wave
Detail: E 8 ft at 8 seconds and E 3 ft at 13 seconds. A chance of
showers.
.MON NIGHT...E winds 15 to 20 kt with gusts to 25 kt. Seas 7 to
9 ft, subsiding to 7 to 8 ft after midnight. Wave Detail: E 8 ft
at 8 seconds and E 2 ft at 13 seconds, becoming E 8 ft at
8 seconds and E 2 ft at 12 seconds. A chance of showers with a
slight chance of tstms in the evening, then a slight chance of
showers after midnight.
.TUE...E winds 15 kt. Seas 6 to 8 ft. A slight chance of showers.
.TUE NIGHT...E winds 10 to 15 kt. Seas 5 to 7 ft.
.WED...E winds 10 to 15 kt. Seas 5 ft. A slight chance of
showers.
.WED NIGHT...E winds 15 kt. Seas 5 to 6 ft. A slight chance of
showers.

Winds and seas higher in and near tstms.

$$