723
FZUS52 KCHS 130541
CWFCHS

Coastal Waters Forecast
National Weather Service Charleston SC
141 AM EDT Sun Jul 13 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

AMZ300-131815-
141 AM EDT Sun Jul 13 2025

.Synopsis for the coastal waters of south coastal South Carolina
and north coastal Georgia...
Weak high pressure will continue to build across the region
through the week.

$$

AMZ330-131815-
Charleston Harbor-
141 AM EDT Sun Jul 13 2025

.TODAY...W winds 5 to 10 kt, becoming S 10 to 15 kt this
afternoon. A slight chance of showers and tstms early this
morning. A chance of showers and tstms this afternoon.
.TONIGHT...S winds 5 to 10 kt. A chance of showers and tstms in
the evening.
.MON...E winds 5 to 10 kt, increasing to 10 to 15 kt in the
afternoon. A slight chance of showers and tstms in the morning,
then a chance of showers and tstms in the afternoon.
.MON NIGHT...SE winds 10 kt. A chance of showers and tstms in the
evening.
.TUE...SE winds 10 to 15 kt. A chance of showers and tstms.
.TUE NIGHT...S winds 10 to 15 kt. A chance of showers and tstms.
.WED...S winds 10 to 15 kt. Showers likely with a chance of
tstms.
.WED NIGHT...S winds 15 kt. A slight chance of showers and tstms.
.THU...S winds 10 to 15 kt. A chance of showers and tstms.
.THU NIGHT...S winds 10 to 15 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.

$$

AMZ350-131815-
Waters from South Santee River to Edisto Beach SC out 20 NM-
141 AM EDT Sun Jul 13 2025

.TODAY...W winds 5 kt, becoming S this afternoon. Seas 2 to 3 ft.
Wave Detail: SE 2 ft at 7 seconds. A chance of showers and tstms
early this morning, then a slight chance of showers and tstms
late this morning.
.TONIGHT...S winds 5 kt. Seas 2 ft. Wave Detail: SE 2 ft at
7 seconds. A slight chance of showers and tstms in the evening.
.MON...E winds 5 kt, increasing to 5 to 10 kt in the afternoon.
Seas 2 ft. Wave Detail: SE 2 ft at 7 seconds. A slight chance of
showers and tstms.
.MON NIGHT...SE winds 5 to 10 kt. Seas 2 ft. Wave Detail: S 2 ft
at 6 seconds. A chance of showers and tstms, mainly in the
evening.
.TUE...SE winds 5 to 10 kt. Seas 2 ft. Wave Detail: SE 2 ft at
7 seconds and S 1 foot at 4 seconds. A chance of showers and
tstms.
.TUE NIGHT...S winds 10 kt. Seas 2 to 3 ft. Wave Detail: SE 3 ft
at 6 seconds. A chance of showers and tstms.
.WED...S winds 10 to 15 kt. Seas 3 ft. Showers likely with a
chance of tstms.
.WED NIGHT...S winds 10 to 15 kt. Seas 3 ft. A chance of showers
and tstms.
.THU...S winds 10 to 15 kt. Seas 3 ft. A chance of showers and
tstms.
.THU NIGHT...S winds 10 to 15 kt. Seas 3 ft. A chance of showers
and tstms.

Winds and seas higher in and near tstms.

$$

AMZ352-131815-
Waters from Edisto Beach SC to Savannah GA out 20 NM-
141 AM EDT Sun Jul 13 2025

.TODAY...Variable winds 5 kt. Seas 2 ft. Wave Detail: SE 2 ft at
8 seconds. A slight chance of showers and tstms until late
afternoon, then a chance of showers and tstms late.
.TONIGHT...S winds 5 kt, becoming SW after midnight. Seas 2 ft.
Wave Detail: SE 2 ft at 7 seconds. A chance of showers and tstms
in the evening.
.MON...E winds 5 kt. Seas 2 ft. Wave Detail: S 2 ft at 6 seconds.
A slight chance of showers and tstms in the morning, then a
chance of showers and tstms in the afternoon.
.MON NIGHT...SE winds 5 kt. Seas 2 ft. Wave Detail: SE 2 ft at
6 seconds. A chance of showers and tstms, mainly in the evening.
.TUE...SE winds 5 to 10 kt. Seas 2 ft. Wave Detail: SE 2 ft at
8 seconds. A chance of showers and tstms.
.TUE NIGHT...S winds 10 kt. Seas 2 to 3 ft. Wave Detail: SE 3 ft
at 6 seconds. A chance of showers and tstms.
.WED...S winds 10 kt. Seas 2 to 3 ft. Showers likely with a
chance of tstms.
.WED NIGHT...S winds 10 to 15 kt. Seas 3 ft. A chance of showers
with a slight chance of tstms.
.THU...S winds 10 kt. Seas 3 ft. A chance of showers and tstms.
.THU NIGHT...S winds 10 to 15 kt. Seas 3 ft. A chance of showers
and tstms.

Winds and seas higher in and near tstms.

$$

AMZ354-131815-
Waters from Savannah GA to Altamaha Sound GA out 20 NM, including
Grays Reef National Marine Sanctuary-
141 AM EDT Sun Jul 13 2025

.TODAY...W winds 5 to 10 kt, becoming SE late. Seas 2 ft. Wave
Detail: SE 2 ft at 8 seconds and SW 1 foot at 3 seconds. A slight
chance of showers and tstms early this morning. A slight chance
of showers and tstms this afternoon.
.TONIGHT...S winds 5 to 10 kt, becoming W after midnight. Seas
2 ft. Wave Detail: SE 2 ft at 8 seconds. A chance of showers and
tstms in the evening.
.MON...N winds 5 kt, becoming E in the afternoon. Seas 2 ft. Wave
Detail: SE 2 ft at 8 seconds and S 1 foot at 4 seconds. A slight
chance of showers and tstms in the morning, then a chance of
showers and tstms in the afternoon.
.MON NIGHT...SE winds 5 to 10 kt. Seas 2 ft. Wave Detail: SE 2 ft
at 7 seconds and S 1 foot at 4 seconds. A chance of showers and
tstms, mainly in the evening.
.TUE...SE winds 5 to 10 kt. Seas 2 ft. Wave Detail: SE 2 ft at
7 seconds. A chance of showers and tstms.
.TUE NIGHT...SE winds 10 kt. Seas 2 to 3 ft. Wave Detail: SE 3 ft
at 8 seconds. A chance of showers. A chance of tstms, mainly in
the evening.
.WED...S winds 10 to 15 kt. Seas 2 to 3 ft. Showers likely with a
chance of tstms.
.WED NIGHT...S winds 10 to 15 kt. Seas 3 ft. A chance of showers
with a slight chance of tstms.
.THU...S winds 10 to 15 kt. Seas 3 ft. A chance of showers and
tstms.
.THU NIGHT...S winds 10 to 15 kt. Seas 3 ft. A slight chance of
showers and tstms.

Winds and seas higher in and near tstms.

$$

AMZ374-131815-
Waters from Savannah GA to Altamaha Sound GA from 20 to 60 NM-
141 AM EDT Sun Jul 13 2025

.TODAY...W winds 5 to 10 kt, becoming SE late. Seas 2 to 3 ft.
Wave Detail: SE 3 ft at 8 seconds. A chance of showers and tstms
early this morning, then a slight chance of showers and tstms
late this morning and early afternoon.
.TONIGHT...S winds 5 kt, becoming W after midnight. Seas 2 ft.
Wave Detail: SE 2 ft at 8 seconds and SW 1 foot at 3 seconds. A
slight chance of showers and tstms.
.MON...N winds 5 kt, becoming E in the afternoon. Seas 2 ft. Wave
Detail: SE 2 ft at 8 seconds and S 1 foot at 5 seconds. A slight
chance of showers and tstms.
.MON NIGHT...SE winds 5 to 10 kt. Seas 2 ft. Wave Detail: SE 2 ft
at 7 seconds and S 1 foot at 4 seconds. A slight chance of
showers and tstms in the evening, then a chance of showers and
tstms after midnight.
.TUE...SE winds 5 to 10 kt. Seas 2 ft. Wave Detail: SE 2 ft at
8 seconds. A chance of showers and tstms.
.TUE NIGHT...SE winds 10 kt. Seas 2 to 3 ft. Wave Detail: SE 3 ft
at 8 seconds. A slight chance of showers and tstms in the
evening, then a chance of showers and tstms after midnight.
.WED...S winds 10 to 15 kt. Seas 3 to 4 ft. Showers likely with a
chance of tstms.
.WED NIGHT...S winds 10 to 15 kt. Seas 3 to 4 ft. A chance of
showers and tstms.
.THU...S winds 10 kt. Seas 3 to 4 ft. A chance of showers and
tstms.
.THU NIGHT...S winds 10 to 15 kt. Seas 3 ft. A chance of showers
and tstms.

Winds and seas higher in and near tstms.

$$