632
FZUS52 KCHS 160542
CWFCHS

Coastal Waters Forecast
National Weather Service Charleston SC
142 AM EDT Wed Jul 16 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

AMZ300-161815-
142 AM EDT Wed Jul 16 2025

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

$$

AMZ330-161815-
Charleston Harbor-
142 AM EDT Wed Jul 16 2025

.TODAY...S winds 10 to 15 kt with gusts to 20 kt. A chance of
showers and tstms until late afternoon, then a slight chance of
showers and tstms late.
.TONIGHT...S winds 10 to 15 kt.
.THU...S winds 10 to 15 kt. A chance of showers and tstms.
.THU NIGHT...S winds 10 to 15 kt.
.FRI...SW winds 10 to 15 kt. A slight chance of showers and
tstms.
.FRI NIGHT...SW winds 10 to 15 kt. A slight chance of showers and
tstms in the evening.
.SAT...SW winds 10 to 15 kt. A slight chance of showers and
tstms.
.SAT NIGHT...SW winds 5 to 10 kt. A slight chance of showers and
tstms.
.SUN...SW winds 10 to 15 kt. A chance of showers and tstms.
.SUN NIGHT...SW 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 86 degrees.

$$

AMZ350-161815-
Waters from South Santee River to Edisto Beach SC out 20 NM-
142 AM EDT Wed Jul 16 2025

.TODAY...S winds 10 to 15 kt. Seas 3 to 4 ft. Wave Detail: SE
4 ft at 7 seconds. A chance of showers and tstms until late
afternoon, then a slight chance of showers and tstms late.
.TONIGHT...S winds 10 to 15 kt with gusts to 20 kt. Seas 3 to
4 ft. Wave Detail: S 3 ft at 6 seconds.
.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. Wave Detail: S 3 ft at
7 seconds. A slight chance of showers and tstms.
.FRI NIGHT...SW winds 10 to 15 kt. Seas 3 ft. Wave Detail: S 3 ft
at 8 seconds. A slight chance of showers and tstms after
midnight.
.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
and tstms.
.SUN...SW winds 10 to 15 kt. Seas 3 ft. A slight chance of
showers and tstms.
.SUN NIGHT...SW winds 10 to 15 kt. Seas 3 ft. A chance of showers
and tstms.

Winds and seas higher in and near tstms.

$$

AMZ352-161815-
Waters from Edisto Beach SC to Savannah GA out 20 NM-
142 AM EDT Wed Jul 16 2025

.TODAY...S winds 10 to 15 kt. Seas 3 to 4 ft. Wave Detail: SE
4 ft at 7 seconds. A chance of showers and tstms until late
afternoon, then a slight chance of showers and tstms late.
.TONIGHT...S winds 10 to 15 kt with gusts to 20 kt. Seas 3 ft.
Wave Detail: SE 3 ft at 6 seconds.
.THU...S winds 10 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. Wave Detail: S 3 ft
at 7 seconds. A slight chance of showers and tstms.
.FRI NIGHT...SW winds 10 to 15 kt. Seas 3 ft. Wave Detail: SE
3 ft at 8 seconds.
.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.
.SUN...SW winds 5 to 10 kt. Seas 2 to 3 ft. A slight chance of
showers and tstms.
.SUN NIGHT...SW winds 10 kt. Seas 2 to 3 ft. A chance of showers
and tstms.

Winds and seas higher in and near tstms.

$$

AMZ354-161815-
Waters from Savannah GA to Altamaha Sound GA out 20 NM, including
Grays Reef National Marine Sanctuary-
142 AM EDT Wed Jul 16 2025

.TODAY...S winds 15 kt. Seas 3 to 4 ft. Wave Detail: SE 4 ft at
7 seconds. A slight chance of showers and tstms early this
morning, then a chance of showers and tstms late this morning. A
slight chance of showers and tstms this afternoon.
.TONIGHT...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.
.THU...S winds 10 to 15 kt. Seas 3 ft. Wave Detail: SE 3 ft at
6 seconds. A slight 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 in the
evening.
.FRI...S winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: SE 3 ft
at 7 seconds. A slight chance of showers and tstms.
.FRI NIGHT...SW winds 10 kt. Seas 3 ft. Wave Detail: SE 3 ft at
8 seconds. A slight chance of showers and tstms in the evening.
.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.
.SUN...SW winds 5 to 10 kt. Seas 2 to 3 ft. A slight chance of
showers and tstms.
.SUN NIGHT...SW winds 10 kt. Seas 2 to 3 ft. A chance of showers
and tstms.

Winds and seas higher in and near tstms.

$$

AMZ374-161815-
Waters from Savannah GA to Altamaha Sound GA from 20 to 60 NM-
142 AM EDT Wed Jul 16 2025

.TODAY...S winds 10 to 15 kt. Seas 4 to 5 ft. Wave Detail: SE
5 ft at 7 seconds. A chance of showers and tstms until late
afternoon, then a slight chance of showers and tstms late.
.TONIGHT...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 after midnight.
.THU...S winds 10 kt. Seas 3 ft. Wave Detail: SE 3 ft at
6 seconds. A chance of showers with a slight chance of tstms.
.THU NIGHT...S winds 10 to 15 kt. Seas 3 ft. Wave Detail: SE 3 ft
at 7 seconds.
.FRI...SW winds 5 to 10 kt. Seas 3 ft. Wave Detail: SE 3 ft at
7 seconds. A slight chance of showers and tstms.
.FRI NIGHT...SW winds 10 kt. Seas 3 ft. Wave Detail: SE 3 ft at
8 seconds.
.SAT...SW winds 5 to 10 kt. Seas 3 ft.
.SAT NIGHT...SW winds 10 kt. Seas 3 ft. A slight chance of
showers and tstms.
.SUN...SW winds 5 to 10 kt. Seas 3 ft. A slight chance of showers
and tstms.
.SUN 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.

$$