447
FZUS52 KCHS 052140
CWFCHS

Coastal Waters Forecast
National Weather Service Charleston SC
540 PM EDT Sun Oct 5 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

AMZ300-061000-
540 PM EDT Sun Oct 5 2025

.Synopsis for the coastal waters of south coastal South Carolina
and north coastal Georgia...
Strong high pressure will extend across the region through
mid-week, with a cold front then progged to dive across the
southeastern CONUS heading into the weekend.

$$

AMZ330-061000-
Charleston Harbor-
540 PM EDT Sun Oct 5 2025

.TONIGHT...E winds 10 to 15 kt with gusts to 20 kt. A slight
chance of showers and tstms after midnight.
.MON...E winds 10 to 15 kt with gusts to 20 kt. A chance of
showers and tstms, mainly in the morning.
.MON NIGHT...NE winds 10 to 15 kt with gusts to 20 kt, becoming E
5 to 10 kt after midnight.
.TUE...E winds 5 to 10 kt, increasing to 10 to 15 kt in the
afternoon.
.TUE NIGHT...E winds 5 to 10 kt.
.WED...E winds 5 to 10 kt.
.WED NIGHT...E winds 5 to 10 kt, becoming NE 10 to 15 kt with
gusts to 20 kt after midnight. A slight chance of tstms. A slight
chance of showers in the evening, then a chance of showers after
midnight.
.THU...NE winds 20 to 25 kt. Waves 2 to 3 ft. A chance of showers
and tstms.
.THU NIGHT...NE winds 20 to 25 kt. Waves 2 to 3 ft. A chance of
showers with a slight chance of tstms.
.FRI...NE winds 20 to 25 kt. Waves 2 to 3 ft. A chance of showers
with a slight chance of tstms.
.FRI NIGHT...N winds 15 to 20 kt. Waves 1 to 2 ft. A slight
chance of showers.

Winds and waves higher in and near tstms.

Unless otherwise noted, waves 1 foot or less.

Charleston Harbor water temperature 76 degrees.

$$

AMZ350-061000-
Waters from South Santee River to Edisto Beach SC out 20 NM-
540 PM EDT Sun Oct 5 2025

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

.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 and E 2 ft at 13 seconds.
A slight chance of showers and tstms until early morning, then a
chance of showers and tstms late.
.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 2 ft at 13 seconds, becoming E 6 ft at 8 seconds
and E 1 foot at 13 seconds. A slight chance of showers and tstms
in the morning.
.MON NIGHT...E winds 15 to 20 kt, diminishing to 10 to 15 kt
after midnight. Seas 5 to 6 ft. Wave Detail: E 6 ft at 8 seconds.
.TUE...E winds 10 to 15 kt. Seas 4 to 5 ft. Wave Detail: E 5 ft
at 8 seconds.
.TUE NIGHT...E winds 5 to 10 kt. Seas 4 to 5 ft. Wave Detail: SE
5 ft at 8 seconds.
.WED...E winds 5 to 10 kt. Seas 3 to 4 ft. Wave Detail: SE 4 ft
at 8 seconds.
.WED NIGHT...E winds 5 to 10 kt, becoming NE 15 to 20 kt after
midnight. Seas 3 to 4 ft. A slight chance of showers and tstms in
the evening, then a chance of showers and tstms after midnight.
.THU...NE winds 25 to 30 kt. Seas 6 to 8 ft. A chance of showers
and tstms.
.THU NIGHT...NE winds 30 kt. Seas 8 to 10 ft. A chance of showers
with a slight chance of tstms.
.FRI...NE winds 25 to 30 kt. Seas 8 to 10 ft. A chance of showers
with a slight chance of tstms.
.FRI NIGHT...NE winds 25 to 30 kt. Seas 7 to 9 ft. A chance of
showers with a slight chance of tstms.

Winds and seas higher in and near tstms.

$$

AMZ352-061000-
Waters from Edisto Beach SC to Savannah GA out 20 NM-
540 PM EDT Sun Oct 5 2025

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

.TONIGHT...E winds 15 to 20 kt. Seas 4 to 6 ft. Wave Detail: E
6 ft at 8 seconds and E 1 foot at 13 seconds. A chance of showers
and tstms.
.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 14 seconds. A
slight chance of showers and tstms in the morning.
.MON NIGHT...E winds 15 to 20 kt. Seas 5 to 6 ft. Wave Detail: E
6 ft at 8 seconds.
.TUE...E winds 10 to 15 kt. Seas 5 to 6 ft, subsiding to 4 to
5 ft in the afternoon. Wave Detail: E 5 ft at 8 seconds.
.TUE NIGHT...E winds 5 to 10 kt. Seas 4 to 5 ft. Wave Detail: SE
5 ft at 8 seconds.
.WED...E winds 5 to 10 kt. Seas 3 to 4 ft. Wave Detail: SE 4 ft
at 8 seconds.
.WED NIGHT...E winds 5 to 10 kt, becoming NE 15 to 20 kt after
midnight. Seas 3 to 4 ft. A slight chance of showers and tstms.
.THU...NE winds 25 to 30 kt. Seas 5 to 7 ft. A chance of showers
and tstms.
.THU NIGHT...NE winds 30 kt. Seas 8 to 10 ft. A chance of showers
with a slight chance of tstms.
.FRI...NE winds 25 to 30 kt. Seas 8 to 10 ft. A chance of showers
with a slight chance of tstms.
.FRI NIGHT...NE winds 25 to 30 kt. Seas 7 to 9 ft. A chance of
showers.

Winds and seas higher in and near tstms.

$$

AMZ354-061000-
Waters from Savannah GA to Altamaha Sound GA out 20 NM, including
Grays Reef National Marine Sanctuary-
540 PM EDT Sun Oct 5 2025

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

.TONIGHT...E winds 15 to 20 kt. Seas 4 to 6 ft. Wave Detail: E
6 ft at 8 seconds and E 2 ft at 13 seconds. A slight chance of
showers. A chance of tstms early this evening, then a slight
chance of tstms late this evening.
.MON...E winds 15 to 20 kt. Seas 5 to 7 ft. Wave Detail: E 6 ft
at 8 seconds and E 2 ft at 14 seconds. A slight chance of showers
and tstms.
.MON NIGHT...E winds 15 to 20 kt. Seas 6 to 7 ft, subsiding to
5 to 7 ft after midnight. Wave Detail: E 7 ft at 9 seconds and E
2 ft at 13 seconds, becoming E 6 ft at 9 seconds. A slight chance
of showers after midnight.
.TUE...E winds 10 to 15 kt. Seas 5 to 6 ft, subsiding to 4 to
6 ft in the afternoon. Wave Detail: E 6 ft at 9 seconds, becoming
E 5 ft at 8 seconds. A slight chance of showers and tstms.
.TUE NIGHT...E winds 10 to 15 kt, diminishing to 5 to 10 kt after
midnight. Seas 4 to 5 ft. Wave Detail: E 5 ft at 8 seconds.
.WED...E winds 5 to 10 kt. Seas 3 to 4 ft. Wave Detail: E 4 ft at
8 seconds.
.WED NIGHT...E winds 10 to 15 kt. Seas 3 to 4 ft. A slight chance
of showers and tstms after midnight.
.THU...NE winds 25 to 30 kt. Seas 5 to 7 ft. A chance of showers
and tstms.
.THU NIGHT...NE winds 30 kt. Seas 8 to 10 ft. A chance of showers
and tstms.
.FRI...NE winds 25 to 30 kt. Seas 8 to 10 ft. A chance of
showers.
.FRI NIGHT...NE winds 25 to 30 kt. Seas 7 to 9 ft. A chance of
showers.

Winds and seas higher in and near tstms.

$$

AMZ374-061000-
Waters from Savannah GA to Altamaha Sound GA from 20 to 60 NM-
540 PM EDT Sun Oct 5 2025

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

.TONIGHT...E winds 15 to 20 kt with gusts to 25 kt. Seas 6 to
8 ft. Wave Detail: E 8 ft at 8 seconds and E 3 ft at 12 seconds.
A chance of showers and tstms, mainly this evening.
.MON...E winds 15 to 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
slight chance of showers and tstms.
.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 9 seconds and E 3 ft at 13 seconds, becoming E 8 ft at
9 seconds and E 2 ft at 13 seconds. A slight chance of showers
and tstms.
.TUE...E winds 15 kt with gusts to 20 kt. Seas 6 to 8 ft,
subsiding to 5 to 7 ft in the afternoon. Wave Detail: E 7 ft at
8 seconds and E 2 ft at 13 seconds. A slight chance of showers
and tstms.
.TUE NIGHT...E winds 10 to 15 kt. Seas 5 to 6 ft. Wave Detail: E
6 ft at 8 seconds and E 1 foot at 12 seconds.
.WED...E winds 5 to 10 kt. Seas 4 to 5 ft. Wave Detail: E 5 ft at
8 seconds.
.WED NIGHT...E winds 10 to 15 kt. Seas 4 to 5 ft. A slight chance
of showers and tstms after midnight.
.THU...NE winds 25 to 30 kt. Seas 6 to 8 ft. A chance of showers
and tstms.
.THU NIGHT...NE winds 25 to 30 kt. Seas 9 to 11 ft. A chance of
showers and tstms.
.FRI...NE winds 25 to 30 kt. Seas 10 to 11 ft. A chance of
showers with a slight chance of tstms.
.FRI NIGHT...NE winds 25 to 30 kt. Seas 9 to 11 ft. A chance of
showers with a slight chance of tstms.

Winds and seas higher in and near tstms.

$$