970
FZUS52 KCHS 022218
CWFCHS

Coastal Waters Forecast
National Weather Service Charleston SC
618 PM EDT Sat Aug 2 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

AMZ300-031115-
618 PM EDT Sat Aug 2 2025

.Synopsis for the coastal waters of south coastal South Carolina
and north coastal Georgia...
A cold front will stall nearby and linger in the vicinity into
next week.

$$

AMZ330-031115-
Charleston Harbor-
618 PM EDT Sat Aug 2 2025

.TONIGHT...NE winds 10 kt. Showers and tstms likely, mainly this
evening.
.SUN...NE winds 10 to 15 kt with gusts to 20 kt. Showers likely
with a chance of tstms.
.SUN NIGHT...NE winds 10 to 15 kt, diminishing to 5 to 10 kt
after midnight. Showers likely with a chance of tstms.
.MON...NE winds 10 kt. Showers likely with a chance of tstms.
.MON NIGHT...NE winds 5 to 10 kt. A chance of tstms. Showers
likely, mainly in the evening.
.TUE...NE winds 5 kt, becoming E in the afternoon. Showers
likely. A chance of tstms in the morning, then tstms likely in
the afternoon.
.TUE NIGHT...NE winds 5 to 10 kt. Showers likely. Tstms likely,
mainly in the evening.
.WED...NE winds 5 to 10 kt. Showers and tstms likely.
.WED NIGHT...NE winds 5 to 10 kt. Showers likely with a chance of
tstms.
.THU...NE winds 5 to 10 kt. Showers likely with a chance of
tstms.
.THU NIGHT...NE 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 87 degrees.

$$

AMZ350-031115-
Waters from South Santee River to Edisto Beach SC out 20 NM-
618 PM EDT Sat Aug 2 2025

.TONIGHT...NE winds 15 to 20 kt. Seas 2 to 3 ft, building to 3 to
4 ft after midnight. Wave Detail: NE 3 ft at 4 seconds and S 1
foot at 5 seconds. Tstms likely this evening. Showers likely. A
chance of tstms after midnight.
.SUN...NE winds 15 to 20 kt. Seas 4 to 5 ft. Wave Detail: E 4 ft
at 8 seconds and NE 3 ft at 4 seconds. Showers likely with a
chance of tstms.
.SUN NIGHT...NE winds 10 to 15 kt. Seas 3 to 4 ft. Wave Detail: E
4 ft at 8 seconds. A chance of tstms. Showers.
.MON...NE winds 10 to 15 kt. Seas 3 to 4 ft. Wave Detail: E 4 ft
at 9 seconds. A chance of tstms. Showers.
.MON NIGHT...NE winds 10 to 15 kt, diminishing to 5 to 10 kt
after midnight. Seas 3 to 4 ft. Wave Detail: E 3 ft at 9 seconds.
Showers likely with a chance of tstms.
.TUE...NE winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: E 3 ft
at 9 seconds. Showers likely with a chance of tstms.
.TUE NIGHT...NE winds 5 to 10 kt. Seas 3 to 4 ft. Showers likely
with a chance of tstms.
.WED...NE winds 5 to 10 kt. Seas 3 to 4 ft. Showers and tstms
likely.
.WED NIGHT...NE winds 5 to 10 kt. Seas 2 to 3 ft. Showers likely
with a chance of tstms.
.THU...NE winds 10 kt. Seas 2 to 3 ft. Showers likely with a
chance of tstms.
.THU NIGHT...E winds 5 to 10 kt. Seas 3 ft. Showers likely with a
chance of tstms.

Winds and seas higher in and near tstms.

$$

AMZ352-031115-
Waters from Edisto Beach SC to Savannah GA out 20 NM-
618 PM EDT Sat Aug 2 2025

.TONIGHT...NE winds 10 to 15 kt. Seas 2 to 3 ft. Wave Detail: NE
2 ft at 4 seconds and S 1 foot at 4 seconds. Showers likely this
evening. Tstms likely. Showers after midnight with vsby 1 to
3 NM.
.SUN...NE winds 10 to 15 kt with gusts to 20 kt. Seas 2 to 3 ft,
building to 3 to 4 ft in the afternoon. Wave Detail: NE 3 ft at
4 seconds and S 1 foot at 4 seconds, becoming NE 3 ft at
5 seconds and E 3 ft at 8 seconds. Showers. A chance of tstms in
the morning, then tstms likely in the afternoon. Vsby 1 to 3 NM.
.SUN NIGHT...E winds 10 to 15 kt. Seas 3 to 4 ft. Wave Detail: E
3 ft at 8 seconds. Showers with tstms likely.
.MON...NE winds 10 kt. Seas 3 ft. Wave Detail: E 3 ft at
9 seconds. Showers with a chance of tstms.
.MON NIGHT...E winds 5 to 10 kt. Seas 3 ft. Wave Detail: E 3 ft
at 9 seconds. Showers likely. Tstms likely, mainly in the
evening.
.TUE...E winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: E 3 ft at
9 seconds. Showers likely with a chance of tstms.
.TUE NIGHT...E winds 5 to 10 kt. Seas 2 to 3 ft. Showers likely
with a chance of tstms.
.WED...NE winds 5 to 10 kt. Seas 2 to 3 ft. Showers and tstms
likely.
.WED NIGHT...E winds 5 to 10 kt. Seas 2 to 3 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...E winds 5 to 10 kt. Seas 2 to 3 ft. Showers likely
with a chance of tstms.

Winds and seas higher in and near tstms.

$$

AMZ354-031115-
Waters from Savannah GA to Altamaha Sound GA out 20 NM, including
Grays Reef National Marine Sanctuary-
618 PM EDT Sat Aug 2 2025

.TONIGHT...E winds 5 to 10 kt. Seas 2 ft. Wave Detail: NE 1 foot
at 3 seconds and S 1 foot at 4 seconds. Showers and tstms likely
this evening, then showers with a chance of tstms after midnight.
.SUN...NE winds 10 to 15 kt. Seas 2 to 3 ft. Wave Detail: NE 2 ft
at 3 seconds and S 1 foot at 4 seconds. Showers. A chance of
tstms in the morning, then tstms likely in the afternoon. Vsby
1 to 3 NM.
.SUN NIGHT...E winds 10 kt. Seas 2 to 3 ft. Wave Detail: E 3 ft
at 8 seconds and NE 2 ft at 4 seconds. Showers. Tstms likely,
mainly in the evening.
.MON...E winds 10 kt. Seas 2 to 3 ft. Wave Detail: E 3 ft at
8 seconds. Showers. A chance of tstms in the morning, then tstms
likely in the afternoon.
.MON NIGHT...E winds 5 to 10 kt. Seas 3 ft. Wave Detail: E 3 ft
at 9 seconds. Showers with tstms likely in the evening, then
showers likely with a slight chance of tstms after midnight.
.TUE...E winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: E 3 ft at
9 seconds. Showers likely with a slight chance of tstms in the
morning, then showers with tstms likely in the afternoon.
.TUE NIGHT...E winds 5 to 10 kt. Seas 2 to 3 ft. Showers with
tstms likely in the evening, then showers likely with a chance of
tstms after midnight.
.WED...E winds 5 to 10 kt. Seas 2 to 3 ft. Showers and tstms
likely.
.WED NIGHT...E winds 5 to 10 kt. Seas 2 to 3 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...E winds 5 to 10 kt. Seas 2 to 3 ft. Showers likely
with a chance of tstms.

Winds and seas higher in and near tstms.

$$

AMZ374-031115-
Waters from Savannah GA to Altamaha Sound GA from 20 to 60 NM-
618 PM EDT Sat Aug 2 2025

.TONIGHT...NE winds 5 to 10 kt. Seas 2 ft. Wave Detail: E 2 ft at
8 seconds and NE 1 foot at 3 seconds. A chance of tstms. A chance
of showers early this evening, then showers late this evening.
.SUN...NE winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: E 3 ft
at 8 seconds and NE 2 ft at 3 seconds. Tstms likely. Showers.
Vsby 1 to 3 NM.
.SUN NIGHT...E winds 5 to 10 kt. Seas 3 to 4 ft. Wave Detail: NE
4 ft at 8 seconds. Showers with tstms likely.
.MON...E winds 5 to 10 kt. Seas 3 to 4 ft. Wave Detail: NE 4 ft
at 9 seconds. Showers with a chance of tstms.
.MON NIGHT...E winds 5 to 10 kt. Seas 3 to 4 ft. Wave Detail: NE
4 ft at 9 seconds. Showers likely with a chance of tstms in the
evening, then showers with a slight chance of tstms after
midnight.
.TUE...E winds 5 to 10 kt. Seas 3 to 4 ft. Wave Detail: E 4 ft at
9 seconds. Showers with a chance of tstms.
.TUE NIGHT...E winds 5 to 10 kt. Seas 3 ft. A chance of tstms.
Showers.
.WED...NE winds 5 kt. Seas 3 to 4 ft. Showers likely with a
chance of tstms.
.WED NIGHT...E winds 5 to 10 kt. Seas 3 to 4 ft. Showers with a
chance of tstms.
.THU...NE winds 5 to 10 kt. Seas 3 ft. Showers likely with a
chance of tstms.
.THU NIGHT...E winds 5 to 10 kt. Seas 3 ft. Showers likely with a
chance of tstms.

Winds and seas higher in and near tstms.

$$