785
FZUS52 KCHS 290555
CWFCHS

Coastal Waters Forecast
National Weather Service Charleston SC
155 AM 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

AMZ300-291800-
155 AM 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.

$$

AMZ330-291800-
Charleston Harbor-
155 AM EDT Fri Aug 29 2025

.REST OF TONIGHT...NE winds 5 kt. A slight chance of showers.
.FRI...N winds 5 kt, becoming E in the afternoon.
.FRI NIGHT...SE winds 5 to 10 kt.
.SAT...NE winds 5 kt, becoming E in the afternoon. A slight
chance of showers and tstms in the morning, then a chance of
showers and 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. A slight chance of showers in the
morning, then a chance of showers and tstms in the afternoon.
.SUN NIGHT...NE winds 10 to 15 kt. A chance of showers and tstms,
mainly in the evening.
.MON...NE winds 15 to 20 kt. Waves 1 to 2 ft. A chance of showers
and tstms.
.MON NIGHT...NE winds 10 to 15 kt. A chance of showers with a
slight chance of tstms.
.TUE...NE winds 10 to 15 kt. A chance of showers and tstms.
.TUE NIGHT...NE winds 10 to 15 kt. A chance of showers with a
slight chance of tstms.

Winds and waves higher in and near tstms.

Unless otherwise noted, waves 1 foot or less.

Charleston Harbor water temperature 83 degrees.

$$

AMZ350-291800-
Waters from South Santee River to Edisto Beach SC out 20 NM-
155 AM EDT Fri Aug 29 2025

.REST OF TONIGHT...NE winds 5 kt. Seas 2 ft. Wave Detail: E 2 ft
at 5 seconds and SE 1 foot at 9 seconds. A slight chance of
showers.
.FRI...N winds 5 to 10 kt, becoming E in the afternoon. Seas
2 ft. Wave Detail: E 2 ft at 5 seconds and SE 1 foot at
9 seconds.
.FRI NIGHT...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 in the
afternoon. Seas 2 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. Seas 2 to 3 ft. Wave Detail: E
2 ft at 4 seconds and SE 1 foot at 8 seconds. A chance of showers
and tstms.
.SUN...E winds 15 to 20 kt. Seas 3 to 4 ft. Wave Detail: E 4 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.
.SUN NIGHT...E winds 15 to 20 kt. Seas 4 to 5 ft. A chance of
showers and tstms.
.MON...NE winds 15 to 20 kt. Seas 4 to 6 ft. A chance of showers
and tstms.
.MON NIGHT...NE winds 15 to 20 kt. Seas 4 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...NE winds 15 to 20 kt. Seas 4 to 5 ft. A chance of
showers and tstms.

Winds and seas higher in and near tstms.

$$

AMZ352-291800-
Waters from Edisto Beach SC to Savannah GA out 20 NM-
155 AM EDT Fri Aug 29 2025

.REST OF TONIGHT...E winds 5 to 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.
.FRI...NE winds 5 to 10 kt. Seas 2 ft. Wave Detail: E 2 ft at
5 seconds and SE 1 foot at 9 seconds.
.FRI NIGHT...SE winds 5 to 10 kt. Seas 2 ft. Wave Detail: E 2 ft
at 5 seconds and SE 1 foot at 8 seconds. A slight chance of
showers and tstms after midnight.
.SAT...E winds 5 to 10 kt. Seas 2 ft. Wave Detail: E 2 ft at
5 seconds and SE 1 foot at 8 seconds. A chance of showers and
tstms.
.SAT NIGHT...E winds 10 kt. Seas 2 to 3 ft. Wave Detail: E 2 ft
at 5 seconds and SE 1 foot at 8 seconds. A chance of showers and
tstms.
.SUN...NE winds 10 to 15 kt, becoming E 15 to 20 kt in the
afternoon. Seas 2 to 3 ft, building to 3 to 4 ft in the
afternoon. Wave Detail: E 3 ft at 6 seconds, becoming E 4 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.
.SUN NIGHT...E winds 15 to 20 kt. Seas 4 to 5 ft. A chance of
showers and tstms.
.MON...NE winds 15 to 20 kt. Seas 4 to 5 ft. A chance of showers
and tstms.
.MON NIGHT...NE winds 15 to 20 kt. Seas 4 to 5 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...NE winds 15 to 20 kt. Seas 4 to 5 ft. A chance of
showers and tstms.

Winds and seas higher in and near tstms.

$$

AMZ354-291800-
Waters from Savannah GA to Altamaha Sound GA out 20 NM, including
Grays Reef National Marine Sanctuary-
155 AM EDT Fri Aug 29 2025

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

Winds and seas higher in and near tstms.

$$

AMZ374-291800-
Waters from Savannah GA to Altamaha Sound GA from 20 to 60 NM-
155 AM EDT Fri Aug 29 2025

.REST OF TONIGHT...E winds 10 kt. Seas 2 to 3 ft. Wave Detail: E
3 ft at 5 seconds and E 1 foot at 8 seconds. A slight chance of
showers, then a chance of showers late.
.FRI...NE winds 10 kt. Seas 2 to 3 ft. Wave Detail: E 2 ft at
5 seconds and SE 1 foot at 9 seconds. A slight chance of showers
and tstms.
.FRI NIGHT...E winds 10 kt. Seas 2 to 3 ft. Wave Detail: E 2 ft
at 5 seconds and SE 1 foot at 8 seconds. A slight chance of
tstms. A slight chance of showers in the evening, then a chance
of showers after midnight.
.SAT...E winds 10 to 15 kt. 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. Seas 3 ft. Wave Detail: E 3 ft
at 5 seconds and SE 1 foot at 8 seconds. Showers likely with a
chance of tstms.
.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...E winds 15 to 20 kt with gusts to 25 kt. Seas 4 to
5 ft. A chance of tstms. A chance of showers in the evening, then
showers likely after midnight.
.MON...NE winds 20 kt. Seas 4 to 6 ft. Showers likely with a
chance of tstms.
.MON NIGHT...NE winds 15 to 20 kt. Seas 5 to 6 ft. Showers likely
with a chance of tstms.
.TUE...NE winds 15 to 20 kt. Seas 5 ft. Showers likely with a
chance of tstms.
.TUE NIGHT...NE winds 15 kt. Seas 4 to 5 ft. A chance of showers
and tstms.

Winds and seas higher in and near tstms.

$$