805
FZUS52 KCHS 040550
CWFCHS

Coastal Waters Forecast
National Weather Service Charleston SC
150 AM EDT Mon Aug 4 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

AMZ300-041815-
150 AM EDT Mon Aug 4 2025

.Synopsis for the coastal waters of south coastal South Carolina
and north coastal Georgia...
A stationary front will linger near the area this week as high
pressure remains centered well to the north. Low pressure could
develop off the Southeast U.S. coast Thursday into the weekend.

$$

AMZ330-041815-
Charleston Harbor-
150 AM EDT Mon Aug 4 2025

.REST OF TONIGHT...NE winds 10 kt. A chance of showers. A slight
chance of tstms, then a chance of tstms late.
.MON...NE winds 10 to 15 kt. Showers likely with a chance of
tstms.
.MON NIGHT...E winds 5 to 10 kt. A chance of showers and tstms.
.TUE...E winds 5 kt, increasing to 10 kt in the afternoon.
Showers likely. A chance of tstms in the morning, then tstms
likely in the afternoon.
.TUE NIGHT...E winds 5 to 10 kt. Showers likely. Tstms likely,
mainly in the evening.
.WED...E winds 5 to 10 kt. Showers likely. A chance of tstms in
the morning, then tstms likely in the afternoon.
.WED NIGHT...E winds 5 to 10 kt. Showers and tstms likely, mainly
in the evening.
.THU...NE winds 5 to 10 kt. Showers and tstms likely.
.THU NIGHT...NE winds 5 to 10 kt. Showers and tstms likely.
.FRI...NE winds 10 kt. Showers and tstms likely.
.FRI NIGHT...E winds 5 to 10 kt. Showers likely with a chance of
tstms.

Winds and waves higher in and near tstms.

Unless otherwise noted, waves 1 foot or less.

Charleston Harbor water temperature 85 degrees.

$$

AMZ350-041815-
Waters from South Santee River to Edisto Beach SC out 20 NM-
150 AM EDT Mon Aug 4 2025

.REST OF TONIGHT...E winds 15 to 20 kt. A few gusts to 25 kt
possible. Seas 4 ft. A chance of showers and tstms.
.MON...NE winds 15 kt with gusts to 20 kt. Seas 4 ft. Wave
Detail: E 4 ft at 8 seconds and SE 1 foot at 8 seconds. Showers
likely with a chance of tstms. Vsby 1 to 3 NM in the afternoon.
.MON NIGHT...E winds 10 to 15 kt with gusts to 20 kt, diminishing
to 5 to 10 kt after midnight. Seas 3 to 4 ft. Wave Detail: E 4 ft
at 8 seconds and SE 2 ft at 8 seconds. A chance of tstms. A
chance of showers in the evening, then showers likely after
midnight.
.TUE...E winds 5 to 10 kt. Seas 3 ft. Wave Detail: E 3 ft at
9 seconds and SE 1 foot at 8 seconds. Showers likely with a
chance of tstms.
.TUE NIGHT...E winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: E
3 ft at 8 seconds and SE 1 foot at 8 seconds. A chance of tstms.
A chance of showers in the evening, then showers likely after
midnight.
.WED...E winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: E 2 ft at
8 seconds and SE 2 ft at 8 seconds. Showers likely with a chance
of tstms.
.WED NIGHT...E winds 5 to 10 kt. Seas 2 to 3 ft. Showers likely
with a chance of tstms.
.THU...NE winds 10 to 15 kt. Seas 2 to 3 ft. Showers likely with
a chance of tstms.
.THU NIGHT...NE winds 10 to 15 kt. Seas 3 ft. Showers and tstms
likely.
.FRI...NE winds 10 to 15 kt. Seas 3 to 4 ft. Showers likely with
a chance of tstms.
.FRI NIGHT...E winds 10 to 15 kt. Seas 3 to 4 ft. Showers likely
with a chance of tstms.

Winds and seas higher in and near tstms.

$$

AMZ352-041815-
Waters from Edisto Beach SC to Savannah GA out 20 NM-
150 AM EDT Mon Aug 4 2025

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

Winds and seas higher in and near tstms.

$$

AMZ354-041815-
Waters from Savannah GA to Altamaha Sound GA out 20 NM, including
Grays Reef National Marine Sanctuary-
150 AM EDT Mon Aug 4 2025

.REST OF 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 likely with a
chance of tstms.
.MON...E winds 10 to 15 kt. Seas 3 ft. Wave Detail: E 3 ft at
8 seconds. Showers with a chance of tstms in the morning, then
showers and tstms likely in the afternoon.
.MON NIGHT...E winds 10 to 15 kt, becoming SE 5 to 10 kt after
midnight. Seas 3 ft. Wave Detail: E 3 ft at 9 seconds. Showers
likely with a chance of tstms. Vsby 1 to 3 NM after midnight.
.TUE...SE winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: E 3 ft
at 8 seconds and SE 1 foot at 8 seconds. Showers likely. A chance
of tstms in the morning, then tstms likely in the afternoon.
.TUE NIGHT...SE winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: E
2 ft at 8 seconds and SE 1 foot at 8 seconds. Showers likely.
Tstms likely, mainly in the evening.
.WED...NE winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: E 2 ft
at 8 seconds and SE 1 foot at 8 seconds. Showers likely. A chance
of tstms in the morning, then tstms likely in the afternoon.
.WED NIGHT...E winds 5 to 10 kt. Seas 2 ft. Showers likely. Tstms
likely, mainly in the evening.
.THU...NE winds 10 kt. Seas 2 to 3 ft. Showers and tstms likely.
.THU NIGHT...NE winds 10 kt. Seas 2 to 3 ft. Showers likely with
a chance of tstms.
.FRI...NE winds 10 kt. Seas 2 to 3 ft. Showers with tstms likely.
.FRI NIGHT...E winds 10 to 15 kt. Seas 3 ft. Showers likely with
a chance of tstms.

Winds and seas higher in and near tstms.

$$

AMZ374-041815-
Waters from Savannah GA to Altamaha Sound GA from 20 to 60 NM-
150 AM EDT Mon Aug 4 2025

.REST OF TONIGHT...E winds 10 to 15 kt. Seas 4 to 5 ft. Wave
Detail: NE 4 ft at 9 seconds and SE 1 foot at 8 seconds. Showers
likely. A chance of tstms, then tstms likely late.
.MON...E winds 10 kt. Seas 4 ft. Wave Detail: NE 4 ft at
9 seconds and SE 1 foot at 8 seconds. Showers with tstms likely
in the morning, then showers likely with a chance of tstms in the
afternoon.
.MON NIGHT...E winds 10 kt, becoming SE after midnight. Seas 3 to
4 ft. Wave Detail: NE 4 ft at 9 seconds and SE 1 foot at
8 seconds. Showers likely with a chance of tstms. Vsby 1 to 3 NM
after midnight.
.TUE...SE winds 5 to 10 kt. Seas 3 to 4 ft. Wave Detail: NE 3 ft
at 8 seconds and SE 2 ft at 8 seconds. Showers likely with a
chance of tstms.
.TUE NIGHT...SE winds 5 to 10 kt. Seas 3 to 4 ft. Wave Detail: E
3 ft at 8 seconds and SE 2 ft at 8 seconds. Showers likely with a
chance of tstms.
.WED...NE winds 5 kt. Seas 3 ft. Wave Detail: E 3 ft at 8 seconds
and SE 2 ft at 8 seconds. Showers likely with a chance of tstms.
.WED NIGHT...E winds 5 to 10 kt. Seas 2 to 3 ft. A chance of
tstms. A chance of showers in the evening, then showers after
midnight.
.THU...NE winds 10 kt. Seas 3 ft. Showers with a chance of tstms.
.THU NIGHT...NE winds 10 kt. Seas 3 ft. Showers with a chance of
tstms.
.FRI...NE winds 10 kt. Seas 3 to 4 ft. Showers with a chance of
tstms.
.FRI NIGHT...E winds 10 kt. Seas 4 ft. Showers with a chance of
tstms.

Winds and seas higher in and near tstms.

$$