396
FZUS52 KCHS 040603
CWFCHS

Coastal Waters Forecast
National Weather Service Charleston SC
203 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

AMZ300-041830-
203 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.

$$

AMZ330-041830-
Charleston Harbor-
203 AM EDT Sat Oct 4 2025

.REST OF TONIGHT...NE winds 5 to 10 kt. A slight chance of
showers and tstms.
.SAT...NE winds 5 to 10 kt, increasing to 10 to 15 kt in the
afternoon. A slight chance of showers and tstms in the morning.
.SAT NIGHT...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 76 degrees.

$$

AMZ350-041830-
Waters from South Santee River to Edisto Beach SC out 20 NM-
203 AM EDT Sat Oct 4 2025

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

.REST OF TONIGHT...NE winds 10 to 15 kt. Seas 4 to 6 ft. Wave
Detail: E 5 ft at 7 seconds and E 2 ft at 11 seconds. A chance of
showers and tstms.
.SAT...NE winds 10 to 15 kt, increasing to 15 to 20 kt in the
afternoon. Seas 4 to 6 ft. Wave Detail: E 5 ft at 8 seconds and E
2 ft at 11 seconds. A slight chance of showers and tstms in the
morning.
.SAT NIGHT...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 11 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 1 foot 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 8 seconds and E 1 foot 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.
.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.

$$

AMZ352-041830-
Waters from Edisto Beach SC to Savannah GA out 20 NM-
203 AM EDT Sat Oct 4 2025

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

.REST OF TONIGHT...NE winds 15 kt with gusts to 20 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.
.SAT...NE winds 15 to 20 kt with gusts to 25 kt. Seas 4 to 6 ft.
Wave Detail: E 5 ft at 7 seconds and E 2 ft at 12 seconds,
becoming E 5 ft at 7 seconds and E 4 ft at 13 seconds. A chance of
tstms with a slight chance of showers in the morning.
.SAT 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
12 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 14 seconds, becoming E 7 ft at
7 seconds and E 1 foot at 14 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 7 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 7 ft at
8 seconds and E 1 foot at 14 seconds, becoming 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. 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.

$$

AMZ354-041830-
Waters from Savannah GA to Altamaha Sound GA out 20 NM, including
Grays Reef National Marine Sanctuary-
203 AM EDT Sat Oct 4 2025

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

.REST OF TONIGHT...NE winds 15 to 20 kt with gusts to 25 kt. Seas
5 to 7 ft. Wave Detail: E 6 ft at 8 seconds and E 5 ft at 13
seconds. A slight chance of showers. A slight chance of tstms,
then a chance of tstms late.
.SAT...NE winds 15 to 20 kt with gusts to 25 kt. Seas 5 to 6 ft.
Wave Detail: E 6 ft at 13 seconds. A slight chance of tstms. A
slight chance of showers.
.SAT 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 6 ft at 12 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 7 ft at 8 seconds and E 2 ft at 14 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 7 ft at 8 seconds and E
1 foot at 14 seconds, becoming E 7 ft at 8 seconds. A chance of
showers.
.MON NIGHT...E winds 15 to 20 kt. Seas 5 to 7 ft. 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.

$$

AMZ374-041830-
Waters from Savannah GA to Altamaha Sound GA from 20 to 60 NM-
203 AM EDT Sat Oct 4 2025

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

.REST OF TONIGHT...E winds 15 kt with gusts to 20 kt. Seas 6 to
8 ft. Wave Detail: E 8 ft at 13 seconds. A chance of showers and
tstms.
.SAT...E winds 15 to 20 kt with gusts to 25 kt. Seas 6 to 8 ft.
Wave Detail: E 7 ft at 12 seconds. A chance of tstms. A chance of
showers.
.SAT NIGHT...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 and E 2 ft at 12 seconds, becoming E 9 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 9 ft at 8 seconds and E 2 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 9 ft at 8 seconds and E 2 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. 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.

$$