751
FZUS52 KCHS 302301
CWFCHS

Coastal Waters Forecast
National Weather Service Charleston SC
701 PM EDT Sat Aug 30 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

AMZ300-311215-
701 PM EDT Sat Aug 30 2025

.Synopsis for the coastal waters of south coastal South Carolina
and north coastal Georgia...
High pressure will extend across the area through early next week
while a stationary front lingers just off the coast. A cold front
will move through on Thursday night.

$$

AMZ330-311215-
Charleston Harbor-
701 PM EDT Sat Aug 30 2025

...SMALL CRAFT ADVISORY IN EFFECT FROM SUNDAY MORNING THROUGH
LATE SUNDAY NIGHT...

.TONIGHT...NE winds 10 to 15 kt with gusts to 20 kt. Showers with
tstms likely this evening, then a chance of showers and tstms
after midnight.
.SUN...NE winds 15 to 20 kt with gusts to 25 kt. Waves 1 to 2 ft.
A chance of showers and tstms.
.SUN NIGHT...NE winds 15 to 20 kt with gusts to 25 kt. Waves 1 to
2 ft. A chance of showers and tstms, mainly in the evening.
.MON...NE winds 15 to 20 kt with gusts to 25 kt. Waves 1 to 2 ft.
A slight chance of showers in the morning, then a chance of
showers with a slight chance of tstms in the afternoon.
.MON NIGHT...NE winds 10 to 15 kt with gusts to 20 kt. A chance
of showers with a slight chance of tstms in the evening.
.TUE...NE winds 10 to 15 kt with gusts to 20 kt.
.TUE NIGHT...NE winds 10 to 15 kt, diminishing to 5 to 10 kt
after midnight.
.WED...NE winds 10 to 15 kt. A chance of showers and tstms.
.WED NIGHT...E winds 5 to 10 kt. A chance of showers and tstms.
.THU...E winds 5 to 10 kt. A chance of showers and tstms.
.THU NIGHT...SW winds 5 to 10 kt. A slight chance of showers and
tstms.

Winds and waves higher in and near tstms.

Unless otherwise noted, waves 1 foot or less.

Charleston Harbor water temperature 82 degrees.

$$

AMZ350-311215-
Waters from South Santee River to Edisto Beach SC out 20 NM-
701 PM EDT Sat Aug 30 2025

...SMALL CRAFT ADVISORY IN EFFECT FROM 6 AM EDT SUNDAY THROUGH
TUESDAY MORNING...

.TONIGHT...E winds 15 to 20 kt with gusts to 25 kt. Seas 3 to
4 ft. Wave Detail: E 4 ft at 5 seconds and SE 2 ft at 8 seconds.
Showers with tstms likely early this evening, then a chance of
showers and tstms late this evening. Vsby 1 to 3 NM early this
evening.
.SUN...NE winds 20 to 25 kt with gusts to 30 kt. Seas 4 to 5 ft,
building to 4 to 6 ft in the afternoon. Wave Detail: E 4 ft at
5 seconds, becoming NE 5 ft at 6 seconds. A chance of tstms.
Showers likely, mainly in the morning. Vsby 1 to 3 NM.
.SUN NIGHT...NE winds 20 to 25 kt with gusts to 30 kt. Seas 6 to
7 ft. Wave Detail: E 6 ft at 7 seconds. A chance of showers and
tstms.
.MON...NE winds 20 to 25 kt. Seas 5 to 7 ft. Wave Detail: NE 6 ft
at 7 seconds. A chance of showers with a slight chance of tstms.
.MON NIGHT...NE winds 15 to 20 kt with gusts to 25 kt. Seas 5 to
6 ft. Wave Detail: E 6 ft at 7 seconds. A slight chance of tstms.
A chance of showers, mainly in the evening.
.TUE...NE winds 15 to 20 kt. Seas 4 to 6 ft, subsiding to 4 to
5 ft in the afternoon. Wave Detail: E 6 ft at 7 seconds, becoming
E 5 ft at 7 seconds. A slight chance of showers and tstms.
.TUE NIGHT...NE winds 10 to 15 kt. Seas 4 to 5 ft, subsiding to
3 to 4 ft after midnight. A slight chance of showers.
.WED...NE winds 10 to 15 kt. Seas 3 to 4 ft. A chance of showers
and tstms.
.WED NIGHT...E winds 10 to 15 kt. Seas 2 to 3 ft. A chance of
showers and tstms.
.THU...E winds 5 to 10 kt. Seas 2 to 3 ft. A chance of showers
with a slight chance of tstms.
.THU NIGHT...S winds 10 kt. Seas 2 ft. A chance of showers with a
slight chance of tstms.

Winds and seas higher in and near tstms.

$$

AMZ352-311215-
Waters from Edisto Beach SC to Savannah GA out 20 NM-
701 PM EDT Sat Aug 30 2025

...SMALL CRAFT ADVISORY IN EFFECT FROM 6 AM EDT SUNDAY THROUGH
TUESDAY MORNING...

.TONIGHT...NE winds 15 to 20 kt with gusts to 25 kt. Seas 3 to
4 ft. Wave Detail: E 4 ft at 5 seconds and SE 1 foot at
8 seconds. Showers with tstms likely this evening, then a chance
of showers and tstms after midnight.
.SUN...NE winds 15 to 20 kt, increasing to 20 to 25 kt in the
afternoon. Seas 4 to 5 ft, building to 4 to 6 ft in the
afternoon. Wave Detail: E 4 ft at 6 seconds, becoming E 5 ft at
6 seconds. A chance of tstms. A chance of showers.
.SUN NIGHT...NE winds 20 to 25 kt with gusts to 30 kt. Seas 5 to
7 ft. Wave Detail: E 6 ft at 7 seconds. A chance of showers and
tstms. Vsby 1 to 3 NM after midnight.
.MON...NE winds 20 kt with gusts to 25 kt. Seas 5 to 6 ft. Wave
Detail: E 6 ft at 7 seconds. A chance of showers with a slight
chance of tstms.
.MON NIGHT...NE winds 15 to 20 kt with gusts to 25 kt. Seas 5 to
6 ft, subsiding to 4 to 6 ft after midnight. Wave Detail: E 6 ft
at 7 seconds. A slight chance of tstms. A chance of showers,
mainly in the evening.
.TUE...NE winds 15 to 20 kt. Seas 4 to 5 ft. Wave Detail: E 5 ft
at 7 seconds. A slight chance of showers and tstms.
.TUE NIGHT...NE winds 10 to 15 kt. Seas 4 to 5 ft, subsiding to
3 to 4 ft after midnight. A slight chance of showers and tstms.
.WED...NE winds 10 kt. Seas 3 to 4 ft. A chance of showers and
tstms.
.WED NIGHT...E winds 5 to 10 kt. Seas 2 to 3 ft. A chance of
showers and tstms.
.THU...NE winds 5 to 10 kt. Seas 2 to 3 ft. A chance of showers
with a slight chance of tstms.
.THU NIGHT...S winds 5 to 10 kt. Seas 2 ft. A chance of showers
with a slight chance of tstms.

Winds and seas higher in and near tstms.

$$

AMZ354-311215-
Waters from Savannah GA to Altamaha Sound GA out 20 NM, including
Grays Reef National Marine Sanctuary-
701 PM EDT Sat Aug 30 2025

...SMALL CRAFT ADVISORY IN EFFECT FROM 6 AM EDT SUNDAY THROUGH
TUESDAY MORNING...

.TONIGHT...NE winds 15 to 20 kt. Seas 3 to 4 ft. Wave Detail: E
3 ft at 4 seconds and SE 1 foot at 8 seconds. A chance of tstms.
Showers likely early this evening, then a chance of showers late
this evening.
.SUN...NE winds 15 to 20 kt, increasing to 20 to 25 kt in the
afternoon. Seas 3 to 4 ft, building to 4 to 5 ft in the
afternoon. Wave Detail: E 4 ft at 6 seconds, becoming NE 5 ft at
6 seconds. A chance of showers and tstms.
.SUN NIGHT...NE winds 20 to 25 kt with gusts to 30 kt. Seas 5 to
6 ft. Wave Detail: NE 6 ft at 7 seconds. A chance of showers and
tstms. Vsby 1 to 3 NM after midnight.
.MON...NE winds 20 to 25 kt with gusts to 30 kt. Seas 5 to 6 ft.
Wave Detail: NE 6 ft at 7 seconds. A chance of showers. A slight
chance of tstms in the morning, then a chance of tstms in the
afternoon.
.MON NIGHT...NE winds 15 to 20 kt with gusts to 25 kt. Seas 5 to
6 ft. Wave Detail: E 6 ft at 7 seconds. A chance of showers and
tstms, mainly in the evening.
.TUE...NE winds 15 to 20 kt. Seas 4 to 5 ft. Wave Detail: E 5 ft
at 7 seconds. A slight chance of showers and tstms.
.TUE NIGHT...NE winds 10 to 15 kt. Seas 4 to 5 ft, subsiding to
3 to 4 ft after midnight. A slight chance of showers and tstms.
.WED...NE winds 10 kt. Seas 3 to 4 ft. A chance of showers and
tstms.
.WED NIGHT...E winds 5 to 10 kt. Seas 3 to 4 ft. A chance of
showers and tstms.
.THU...NE winds 5 to 10 kt. Seas 2 to 3 ft. A chance of showers
and tstms.
.THU NIGHT...S winds 10 kt. Seas 2 to 3 ft. A slight chance of
showers and tstms.

Winds and seas higher in and near tstms.

$$

AMZ374-311215-
Waters from Savannah GA to Altamaha Sound GA from 20 to 60 NM-
701 PM EDT Sat Aug 30 2025

...SMALL CRAFT ADVISORY IN EFFECT FROM 6 AM EDT SUNDAY THROUGH
TUESDAY EVENING...

.TONIGHT...NE winds 15 kt with gusts to 20 kt. Seas 3 to 4 ft.
Wave Detail: E 4 ft at 5 seconds and SE 1 foot at 8 seconds.
Showers likely. Tstms likely early this evening, then a chance of
tstms late this evening.
.SUN...NE winds 15 to 20 kt, increasing to 20 to 25 kt in the
afternoon. Seas 4 to 5 ft, building to 4 to 6 ft in the
afternoon. Wave Detail: E 5 ft at 7 seconds, becoming NE 6 ft at
6 seconds. A chance of tstms. Showers likely, mainly in the
morning.
.SUN NIGHT...NE winds 20 to 25 kt with gusts to 30 kt. Seas 5 to
7 ft, building to 6 to 7 ft after midnight. Wave Detail: NE 7 ft
at 6 seconds, becoming NE 7 ft at 7 seconds. Showers likely with
a chance of tstms. Vsby 1 to 3 NM after midnight.
.MON...NE winds 20 to 25 kt. Seas 6 to 7 ft. Wave Detail: NE 7 ft
at 7 seconds. A chance of tstms. Showers likely, mainly in the
morning.
.MON NIGHT...NE winds 15 to 20 kt with gusts to 25 kt. Seas 6 to
7 ft. Wave Detail: NE 7 ft at 7 seconds. A chance of showers and
tstms.
.TUE...NE winds 15 to 20 kt. Seas 5 to 6 ft. Wave Detail: NE 6 ft
at 8 seconds. A chance of showers. A chance of tstms, mainly in
the morning.
.TUE NIGHT...NE winds 10 to 15 kt. Seas 5 to 6 ft, subsiding to
4 to 5 ft after midnight. A chance of showers. A slight chance of
tstms in the evening, then a chance of tstms after midnight.
.WED...NE winds 10 kt. Seas 4 to 5 ft. A chance of showers and
tstms.
.WED NIGHT...E winds 10 kt. Seas 3 to 4 ft. A chance of showers
and tstms.
.THU...NE winds 5 to 10 kt. Seas 3 ft. A chance of showers and
tstms.
.THU NIGHT...S winds 5 to 10 kt. Seas 3 ft. A chance of showers
with a slight chance of tstms.

Winds and seas higher in and near tstms.

$$