504
FZUS52 KCHS 292306
CWFCHS

Coastal Waters Forecast
National Weather Service Charleston SC
706 PM EDT Fri Aug 29 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

AMZ300-301215-
706 PM EDT Fri Aug 29 2025

.Synopsis for the coastal waters of south coastal South Carolina
and north coastal Georgia...
High pressure will extend across the area as a stationary front
lingers well to the south and offshore into the middle of next
week. A cold front is then anticipated to arrive late next week.

$$

AMZ330-301215-
Charleston Harbor-
706 PM EDT Fri Aug 29 2025

.TONIGHT...S winds 5 kt.
.SAT...NE winds 5 kt, becoming E in the afternoon. A chance of
showers. A slight chance of tstms in the morning, then a chance
of tstms in the afternoon.
.SAT NIGHT...E winds 5 to 10 kt. A chance of showers. A chance of
tstms, mainly in the evening.
.SUN...NE winds 10 to 15 kt, increasing to 15 to 20 kt in the
afternoon. Waves 1 to 2 ft. A chance of showers. A slight chance
of tstms in the morning, then a chance of tstms in the afternoon.
.SUN NIGHT...NE winds 15 to 20 kt, diminishing to 10 to 15 kt
after midnight. Waves 1 to 2 ft. A chance of showers and tstms.
.MON...NE winds 10 to 15 kt, increasing to 15 to 20 kt in the
afternoon. Waves 1 to 2 ft. A chance of showers with a slight
chance of tstms.
.MON NIGHT...NE winds 10 to 15 kt with gusts to 20 kt. A chance
of showers and tstms, mainly in the evening.
.TUE...NE winds 10 to 15 kt. A chance of showers with a slight
chance of tstms.
.TUE NIGHT...NE winds 10 to 15 kt. A chance of showers with a
slight chance of tstms.
.WED...E winds 10 kt. A chance of showers and tstms.
.WED NIGHT...SE winds 5 to 10 kt. A 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 84 degrees.

$$

AMZ350-301215-
Waters from South Santee River to Edisto Beach SC out 20 NM-
706 PM EDT Fri Aug 29 2025

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

Winds and seas higher in and near tstms.

$$

AMZ352-301215-
Waters from Edisto Beach SC to Savannah GA out 20 NM-
706 PM EDT Fri Aug 29 2025

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

Winds and seas higher in and near tstms.

$$

AMZ354-301215-
Waters from Savannah GA to Altamaha Sound GA out 20 NM, including
Grays Reef National Marine Sanctuary-
706 PM EDT Fri Aug 29 2025

.TONIGHT...SE winds 10 kt. Seas 2 ft. Wave Detail: E 2 ft at
5 seconds and SE 1 foot at 9 seconds. A slight chance of showers
until early morning. A slight chance of tstms after midnight. A
chance of showers late.
.SAT...E winds 5 to 10 kt, increasing to 10 to 15 kt with gusts
to 20 kt in the afternoon. Seas 2 to 3 ft. Wave Detail: E 2 ft at
5 seconds and SE 1 foot at 8 seconds. Showers likely with a
chance of tstms in the morning, then showers with tstms likely in
the afternoon.
.SAT NIGHT...E winds 15 kt with gusts to 20 kt. Seas 3 ft. Wave
Detail: E 3 ft at 4 seconds and SE 1 foot at 8 seconds. Showers
likely. Tstms likely, mainly in the evening.
.SUN...NE winds 15 to 20 kt. Seas 3 to 4 ft. Wave Detail: E 4 ft
at 6 seconds. Showers likely with a chance of tstms.
.SUN NIGHT...NE winds 15 to 20 kt with gusts to 25 kt. Seas 4 to
5 ft. Wave Detail: E 5 ft at 6 seconds. A chance of tstms.
Showers likely, mainly in the evening.
.MON...NE winds 20 kt with gusts to 25 kt. Seas 4 to 5 ft,
building to 5 to 6 ft in the afternoon. Wave Detail: E 5 ft at
6 seconds, becoming E 6 ft at 7 seconds. A chance of showers and
tstms.
.MON NIGHT...NE winds 15 to 20 kt with gusts to 25 kt. Seas 5 to
6 ft. A chance of showers and tstms.
.TUE...NE winds 15 to 20 kt. Seas 4 to 5 ft. A chance of showers
and tstms.
.TUE NIGHT...E winds 15 to 20 kt. Seas 4 to 5 ft. A chance of
showers and tstms.
.WED...E winds 10 to 15 kt. Seas 3 to 4 ft. A chance of showers
and tstms.
.WED NIGHT...SE winds 10 kt. Seas 3 to 4 ft. A chance of showers
and tstms.

Winds and seas higher in and near tstms.

$$

AMZ374-301215-
Waters from Savannah GA to Altamaha Sound GA from 20 to 60 NM-
706 PM EDT Fri Aug 29 2025

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

Winds and seas higher in and near tstms.

$$