422
FZUS52 KCHS 301154
CWFCHS

Coastal Waters Forecast
National Weather Service Charleston SC
754 AM 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

AMZ300-310015-
754 AM 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.

$$

AMZ330-310015-
Charleston Harbor-
754 AM EDT Sat Aug 30 2025

.TODAY...Variable winds 5 kt, becoming E winds 10 to 15 kt. A
chance of tstms. A chance of showers early this morning, then
showers likely late this morning.
.TONIGHT...E winds 10 kt. A chance of tstms. Showers likely,
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 and tstms.
.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 15 to 20 kt. Waves 1 to 2 ft. A slight chance of
showers and tstms in the morning, then a chance of showers and
tstms in the afternoon.
.MON NIGHT...NE winds 10 to 15 kt. A chance of showers and tstms,
mainly in the evening.
.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 and tstms.
.WED...E winds 10 to 15 kt. A chance of showers and tstms.
.WED NIGHT...NE winds 10 to 15 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 82 degrees.

$$

AMZ350-310015-
Waters from South Santee River to Edisto Beach SC out 20 NM-
754 AM EDT Sat Aug 30 2025

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

Winds and seas higher in and near tstms.

$$

AMZ352-310015-
Waters from Edisto Beach SC to Savannah GA out 20 NM-
754 AM EDT Sat Aug 30 2025

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

Winds and seas higher in and near tstms.

$$

AMZ354-310015-
Waters from Savannah GA to Altamaha Sound GA out 20 NM, including
Grays Reef National Marine Sanctuary-
754 AM EDT Sat Aug 30 2025

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

Winds and seas higher in and near tstms.

$$

AMZ374-310015-
Waters from Savannah GA to Altamaha Sound GA from 20 to 60 NM-
754 AM EDT Sat Aug 30 2025

.TODAY...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.
Showers, tstms.
.TONIGHT...E winds 10 to 15 kt with gusts to 20 kt. Seas 3 to
4 ft. Wave Detail: E 4 ft at 8 seconds. Showers and tstms in the
evening, then showers likely with a chance of tstms 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. 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. Showers and tstms likely.
.MON...NE winds 20 kt with gusts to 25 kt. Seas 5 to 6 ft,
building to 6 to 7 ft in the afternoon. Wave Detail: NE 6 ft at
7 seconds. Showers and tstms likely.
.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. Wave Detail: NE 6 ft
at 7 seconds, becoming NE 6 ft at 8 seconds. A chance of showers
and tstms.
.TUE...NE winds 15 to 20 kt. Seas 5 to 6 ft. A chance of showers
and tstms.
.TUE NIGHT...NE winds 15 kt. Seas 4 to 6 ft. Showers and tstms
likely.
.WED...E winds 10 to 15 kt. Seas 4 to 5 ft. Showers and tstms
likely.
.WED NIGHT...NE winds 10 to 15 kt. Seas 3 to 4 ft. A chance of
showers and tstms.

Winds and seas higher in and near tstms.

$$