770
FZUS52 KCHS 151108
CWFCHS

Coastal Waters Forecast
National Weather Service Charleston SC
708 AM EDT Tue Jul 15 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

AMZ300-160015-
708 AM EDT Tue Jul 15 2025

.Synopsis for the coastal waters of south coastal South Carolina
and north coastal Georgia...
Atlantic high pressure will prevail through early next week.

$$

AMZ330-160015-
Charleston Harbor-
708 AM EDT Tue Jul 15 2025

.TODAY...SE winds 5 to 10 kt, increasing to 10 to 15 kt this
afternoon. A slight chance of showers and tstms early this
morning, then a chance of showers and tstms late this morning.
.TONIGHT...S winds 10 kt. A chance of showers and tstms, mainly
in the evening.
.WED...S winds 10 to 15 kt. Showers likely with a chance of
tstms.
.WED NIGHT...S winds 10 to 15 kt. A chance of showers and tstms,
mainly in the evening.
.THU...S winds 10 to 15 kt. A chance of showers and tstms.
.THU NIGHT...S winds 10 to 15 kt with gusts to 20 kt, becoming SW
5 to 10 kt after midnight. A slight chance of showers and tstms
in the evening.
.FRI...SW winds 10 to 15 kt. A chance of showers and tstms.
.FRI NIGHT...SW winds 10 to 15 kt.
.SAT...SW winds 10 to 15 kt. A chance of showers and tstms.
.SAT 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 85 degrees.

$$

AMZ350-160015-
Waters from South Santee River to Edisto Beach SC out 20 NM-
708 AM EDT Tue Jul 15 2025

.TODAY...SE winds 5 to 10 kt, increasing to 10 to 15 kt late.
Seas 2 to 3 ft. Wave Detail: SE 3 ft at 7 seconds. A slight
chance of showers and tstms early this morning, then a chance of
showers and tstms late this morning.
.TONIGHT...S winds 10 to 15 kt. Seas 3 to 4 ft. Wave Detail: SE
4 ft at 6 seconds. A chance of showers and tstms.
.WED...S winds 10 to 15 kt with gusts to 20 kt. Seas 3 to 4 ft.
Wave Detail: SE 4 ft at 6 seconds. Showers likely with a chance
of tstms.
.WED NIGHT...S winds 15 kt with gusts to 20 kt. Seas 3 to 4 ft.
Wave Detail: SE 4 ft at 6 seconds. A slight chance of showers and
tstms.
.THU...SW winds 10 to 15 kt. Seas 3 ft. Wave Detail: S 3 ft at
6 seconds. A chance of showers and tstms.
.THU NIGHT...SW winds 10 to 15 kt. Seas 3 ft. Wave Detail: S 3 ft
at 6 seconds.
.FRI...SW winds 10 to 15 kt. Seas 3 ft. A chance of showers and
tstms.
.FRI NIGHT...SW winds 10 to 15 kt. Seas 3 ft. A slight chance of
showers and tstms.
.SAT...SW winds 10 to 15 kt. Seas 3 ft. A slight chance of
showers and tstms.
.SAT NIGHT...SW winds 10 to 15 kt. Seas 3 ft. A chance of showers
with a slight chance of tstms.

Winds and seas higher in and near tstms.

$$

AMZ352-160015-
Waters from Edisto Beach SC to Savannah GA out 20 NM-
708 AM EDT Tue Jul 15 2025

.TODAY...E winds 5 to 10 kt. Seas 2 ft. Wave Detail: SE 2 ft at
8 seconds and SE 1 foot at 4 seconds. A chance of showers and
tstms late this morning.
.TONIGHT...SE winds 10 to 15 kt. Seas 2 to 3 ft, building to 3 to
4 ft after midnight. Wave Detail: SE 3 ft at 6 seconds. A chance
of showers and tstms.
.WED...S winds 10 to 15 kt. Seas 3 to 4 ft. Wave Detail: SE 4 ft
at 6 seconds. A chance of showers and tstms.
.WED NIGHT...S winds 10 to 15 kt with gusts to 20 kt. Seas 3 ft.
Wave Detail: SE 3 ft at 6 seconds. A slight chance of tstms. A
slight chance of showers in the evening, then a chance of showers
after midnight.
.THU...S winds 10 to 15 kt. Seas 3 ft. Wave Detail: SE 3 ft at
6 seconds. A chance of showers and tstms.
.THU NIGHT...S winds 10 to 15 kt. Seas 3 ft. Wave Detail: SE 3 ft
at 6 seconds.
.FRI...SW winds 5 to 10 kt. Seas 2 to 3 ft. A slight chance of
showers and tstms.
.FRI NIGHT...SW winds 10 to 15 kt. Seas 3 ft. A slight chance of
showers and tstms.
.SAT...SW winds 5 to 10 kt. Seas 2 to 3 ft. A slight chance of
showers and tstms.
.SAT NIGHT...SW winds 10 kt. Seas 3 ft. A slight chance of
showers and tstms.

Winds and seas higher in and near tstms.

$$

AMZ354-160015-
Waters from Savannah GA to Altamaha Sound GA out 20 NM, including
Grays Reef National Marine Sanctuary-
708 AM EDT Tue Jul 15 2025

.TODAY...E winds 5 to 10 kt, increasing to 10 to 15 kt late. Seas
2 ft. Wave Detail: E 2 ft at 6 seconds. A chance of showers and
tstms late this morning.
.TONIGHT...SE winds 10 to 15 kt. Seas 2 to 3 ft. Wave Detail: SE
3 ft at 6 seconds. A chance of showers and tstms, mainly in the
evening.
.WED...S winds 10 to 15 kt. Seas 3 to 4 ft. Wave Detail: SE 4 ft
at 6 seconds. A chance of showers and tstms.
.WED NIGHT...S winds 15 kt with gusts to 20 kt. Seas 3 to 4 ft.
Wave Detail: SE 4 ft at 6 seconds. A slight chance of showers and
tstms.
.THU...S winds 10 to 15 kt. Seas 3 ft. Wave Detail: SE 3 ft at
6 seconds. A chance of showers and tstms.
.THU NIGHT...S winds 10 to 15 kt. Seas 3 ft. Wave Detail: SE 3 ft
at 6 seconds. A slight chance of showers and tstms.
.FRI...S winds 10 to 15 kt. Seas 2 to 3 ft. A chance of showers
and tstms.
.FRI NIGHT...S winds 10 to 15 kt. Seas 2 to 3 ft. A slight chance
of showers and tstms.
.SAT...SW winds 5 to 10 kt. Seas 2 to 3 ft. A slight chance of
showers and tstms.
.SAT NIGHT...SW winds 10 kt. Seas 2 to 3 ft. A slight chance of
showers and tstms.

Winds and seas higher in and near tstms.

$$

AMZ374-160015-
Waters from Savannah GA to Altamaha Sound GA from 20 to 60 NM-
708 AM EDT Tue Jul 15 2025

.TODAY...E winds 5 to 10 kt, becoming SE 10 to 15 kt late. Seas
2 to 3 ft. Wave Detail: E 2 ft at 6 seconds. A chance of showers.
A slight chance of tstms early this morning, then a chance of
tstms late this morning.
.TONIGHT...SE winds 10 to 15 kt with gusts to 20 kt. Seas 3 to
4 ft. Wave Detail: SE 4 ft at 6 seconds. A chance of showers and
tstms.
.WED...S winds 10 to 15 kt. Seas 4 ft. Wave Detail: SE 4 ft at
6 seconds. A chance of showers and tstms.
.WED NIGHT...S winds 10 to 15 kt with gusts to 20 kt. Seas 3 to
4 ft. Wave Detail: SE 4 ft at 6 seconds. A slight chance of
showers and tstms in the evening, then a chance of showers and
tstms after midnight.
.THU...S winds 10 to 15 kt. Seas 3 to 4 ft. Wave Detail: SE 3 ft
at 6 seconds. A chance of showers and tstms.
.THU NIGHT...S winds 10 to 15 kt. Seas 3 ft. Wave Detail: SE 3 ft
at 7 seconds. A slight chance of showers and tstms after
midnight.
.FRI...SW winds 5 to 10 kt. Seas 3 ft. A slight chance of showers
and tstms.
.FRI NIGHT...S winds 10 kt. Seas 3 ft. A slight chance of showers
and tstms.
.SAT...SW winds 5 to 10 kt. Seas 3 ft. A slight chance of showers
and tstms.
.SAT NIGHT...SW winds 10 kt. Seas 3 ft. A chance of showers with
a slight chance of tstms.

Winds and seas higher in and near tstms.

$$