365
FZUS52 KCHS 100531
CWFCHS

Coastal Waters Forecast
National Weather Service Charleston SC
131 AM EDT Thu Jul 10 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

AMZ300-101830-
131 AM EDT Thu Jul 10 2025

.Synopsis for the coastal waters of south coastal South Carolina
and north coastal Georgia...
Weak high pressure will extend across the area into early next
week.

$$

AMZ330-101830-
Charleston Harbor-
131 AM EDT Thu Jul 10 2025

.REST OF TONIGHT...SW winds 5 to 10 kt. A chance of showers and
tstms.
.THU...SW winds 5 to 10 kt, becoming S 15 kt with gusts to 20 kt in
the afternoon. A chance of showers and tstms.
.THU NIGHT...SW winds 10 to 15 kt, diminishing to 5 to 10 kt
after midnight. Showers and tstms likely, mainly in the evening.
.FRI...SW 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.
.FRI NIGHT...SW winds 10 to 15 kt, diminishing to 5 to 10 kt
after midnight. A chance of showers and tstms.
.SAT...W winds 5 kt, becoming SW 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...SW winds 5 to 10 kt. A chance of showers and tstms.
.SUN...SW winds 5 to 10 kt. A chance of showers and tstms.
.SUN NIGHT...SW winds 5 to 10 kt. A slight chance of showers and
tstms.
.MON...SW winds 5 to 10 kt. A chance of showers and tstms.
.MON NIGHT...S winds 5 to 10 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 85 degrees.

$$

AMZ350-101830-
Waters from South Santee River to Edisto Beach SC out 20 NM-
131 AM EDT Thu Jul 10 2025

.REST OF TONIGHT...SW winds 10 kt. Seas 3 ft. Wave Detail: SE
3 ft at 7 seconds and SW 2 ft at 4 seconds. A chance of showers
and tstms.
.THU...SW winds 10 to 15 kt. Seas 3 ft. Wave Detail: SE 3 ft at
7 seconds. A chance of showers and tstms.
.THU NIGHT...SW winds 10 to 15 kt with gusts to 20 kt. Seas 3 to
4 ft. Wave Detail: SE 4 ft at 7 seconds and SW 2 ft at 4 seconds.
Showers and tstms likely, mainly in the evening.
.FRI...SW winds 10 to 15 kt. Seas 3 to 4 ft. Wave Detail: SE 4 ft
at 7 seconds. A chance of showers and tstms.
.FRI NIGHT...SW winds 10 to 15 kt with gusts to 20 kt. Seas 3 to
4 ft. Wave Detail: S 4 ft at 8 seconds. A chance of showers and
tstms.
.SAT...SW winds 10 kt. Seas 3 to 4 ft. Wave Detail: SE 4 ft at
8 seconds. A chance of showers and tstms.
.SAT NIGHT...SW winds 10 kt. Seas 3 ft. A chance of showers and
tstms.
.SUN...SW winds 5 to 10 kt. Seas 2 to 3 ft. A chance of showers
and tstms.
.SUN NIGHT...SW winds 5 to 10 kt. Seas 2 ft. A chance of showers
and tstms.
.MON...SW winds 5 to 10 kt. Seas 2 ft. A chance of showers and
tstms.
.MON NIGHT...SW winds 5 to 10 kt. Seas 2 ft. A chance of showers
and tstms.

Winds and seas higher in and near tstms.

$$

AMZ352-101830-
Waters from Edisto Beach SC to Savannah GA out 20 NM-
131 AM EDT Thu Jul 10 2025

.REST OF TONIGHT...SW winds 10 kt. Seas 2 to 3 ft. Wave Detail:
SE 2 ft at 8 seconds. A chance of showers and tstms.
.THU...SW winds 10 to 15 kt. Seas 2 to 3 ft. Wave Detail: SE 3 ft
at 7 seconds. A chance of showers and tstms, mainly in the
morning.
.THU NIGHT...SW winds 10 to 15 kt with gusts to 20 kt. Seas 3 ft.
Wave Detail: SE 3 ft at 7 seconds and SW 2 ft at 4 seconds.
Showers and tstms likely, mainly in the evening.
.FRI...SW winds 10 kt. Seas 3 ft. Wave Detail: SE 3 ft at
7 seconds. A chance of showers and tstms.
.FRI NIGHT...SW winds 10 to 15 kt. Seas 3 ft. Wave Detail: SE
3 ft at 8 seconds. A chance of showers and tstms.
.SAT...SW winds 5 to 10 kt. Seas 3 ft. Wave Detail: SE 3 ft at
8 seconds. A slight chance of showers and tstms in the morning,
then a chance of showers and tstms in the afternoon.
.SAT NIGHT...SW winds 5 to 10 kt. Seas 2 to 3 ft. A chance of
showers and tstms.
.SUN...SW winds 5 to 10 kt. Seas 2 to 3 ft. A chance of showers
and tstms.
.SUN NIGHT...SW winds 5 to 10 kt. Seas 2 ft. A chance of showers
and tstms.
.MON...SW winds 5 to 10 kt. Seas 2 ft. A chance of showers and
tstms.
.MON NIGHT...SW winds 5 to 10 kt. Seas 2 ft. A chance of showers
and tstms.

Winds and seas higher in and near tstms.

$$

AMZ354-101830-
Waters from Savannah GA to Altamaha Sound GA out 20 NM, including
Grays Reef National Marine Sanctuary-
131 AM EDT Thu Jul 10 2025

.REST OF TONIGHT...SW winds 10 kt. Seas 2 ft. Wave Detail: SW
2 ft at 4 seconds and SE 2 ft at 7 seconds. A chance of showers
and tstms.
.THU...SW winds 10 to 15 kt. Seas 2 to 3 ft. Wave Detail: S 2 ft
at 3 seconds and SE 2 ft at 7 seconds. A chance of showers and
tstms.
.THU NIGHT...SW winds 10 to 15 kt. Seas 3 ft. Wave Detail: SE
3 ft at 7 seconds and S 2 ft at 4 seconds. Showers and tstms
likely, mainly in the evening.
.FRI...SW winds 10 kt, becoming S in the afternoon. Seas 3 ft.
Wave Detail: SE 3 ft at 8 seconds. A slight chance of showers and
tstms in the morning, then a chance of showers and tstms in the
afternoon.
.FRI NIGHT...SW winds 10 to 15 kt. Seas 3 ft. Wave Detail: SE
3 ft at 8 seconds. A chance of showers. A chance of tstms, mainly
in the evening.
.SAT...W winds 5 to 10 kt, becoming S in the afternoon. Seas 2 to
3 ft. Wave Detail: SE 3 ft at 8 seconds. A chance of showers and
tstms in the afternoon.
.SAT NIGHT...SW winds 10 kt. Seas 2 to 3 ft. A chance of showers.
A chance of tstms, mainly in the evening.
.SUN...SW winds 5 to 10 kt. Seas 2 to 3 ft. A chance of showers
and tstms.
.SUN NIGHT...SW winds 5 to 10 kt. Seas 2 ft. A chance of showers
and tstms.
.MON...SW winds 5 to 10 kt. Seas 2 ft. A chance of showers and
tstms.
.MON NIGHT...SW winds 5 to 10 kt. Seas 2 ft. A chance of showers
and tstms.

Winds and seas higher in and near tstms.

$$

AMZ374-101830-
Waters from Savannah GA to Altamaha Sound GA from 20 to 60 NM-
131 AM EDT Thu Jul 10 2025

.REST OF TONIGHT...SW winds 10 kt. Seas 2 to 3 ft. Wave Detail:
SE 3 ft at 8 seconds and SW 2 ft at 3 seconds. A chance of
showers and tstms.
.THU...SW winds 10 kt. Seas 3 ft. Wave Detail: SE 3 ft at
7 seconds and SW 2 ft at 3 seconds. A chance of showers and
tstms, mainly in the morning.
.THU NIGHT...SW winds 10 to 15 kt with gusts to 20 kt. Seas 3 to
4 ft. Wave Detail: SE 4 ft at 8 seconds and S 2 ft at 4 seconds.
Showers and tstms likely, mainly in the evening.
.FRI...SW winds 10 kt. Seas 3 to 4 ft. Wave Detail: SE 4 ft at
8 seconds. A chance of showers and tstms, mainly in the morning.
.FRI NIGHT...SW winds 10 to 15 kt with gusts to 20 kt. Seas 3 to
4 ft. Wave Detail: SE 4 ft at 8 seconds. A chance of showers and
tstms.
.SAT...SW winds 5 to 10 kt. Seas 3 to 4 ft. Wave Detail: SE 4 ft
at 8 seconds. A chance of showers and tstms, mainly in the
morning.
.SAT NIGHT...SW winds 10 kt. Seas 3 ft. A 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.
.MON...SW winds 5 to 10 kt. Seas 2 to 3 ft. A chance of showers
with a slight chance of tstms.
.MON NIGHT...SW winds 5 to 10 kt. Seas 2 ft. A chance of showers
and tstms.

Winds and seas higher in and near tstms.

$$