FZUS52 KCHS 222139
CWFCHS

Coastal Waters Forecast
National Weather Service Charleston SC
539 PM EDT Sat Aug 22 2026

South Santee River SC to Altamaha Sound GA out 60 NM, including
Charleston Harbor and Grays Reef National Marine Sanctuary

AMZ300-231100-
539 PM EDT Sat Aug 22 2026

.Synopsis for the coastal waters of south coastal South Carolina
and north coastal Georgia...
Typical summertime conditions will persist across the local
waters through the weekend and into next week.

$$

AMZ340-231100-
Charleston Harbor-
539 PM EDT Sat Aug 22 2026

.TONIGHT...SW winds 5 to 10 kt. A chance of showers and tstms,
mainly this evening. 
.SUN...W winds 5 to 10 kt, becoming SW 10 to 15 kt in the
afternoon. A slight chance of showers and tstms in the afternoon.
.SUN NIGHT...SW winds 5 to 10 kt. A slight chance of tstms. A
slight chance of showers in the evening, then a chance of showers
after midnight. 
.MON...SW winds 5 to 10 kt. A chance of showers and tstms in the
afternoon. 
.MON NIGHT...SW winds 5 to 10 kt. A chance of showers and tstms,
mainly in the evening. 
.TUE...SW winds 5 to 10 kt. A slight chance of showers and tstms
in the morning, then a chance of showers and tstms in the
afternoon. 
.TUE NIGHT...SW winds 5 to 10 kt. Showers likely with a chance of
tstms. 
.WED...SW winds 5 to 10 kt. A chance of showers and tstms. 
.WED NIGHT...S winds 5 to 10 kt. Showers likely with a chance of
tstms. 
.THU...SW winds 5 to 10 kt. A chance of showers and tstms. 
.THU NIGHT...SW 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 86 degrees. 

$$

AMZ360-231100-
Coastal waters from South Santee River to Edisto Beach SC out
20 NM-
539 PM EDT Sat Aug 22 2026

.TONIGHT...SW winds 10 to 15 kt with gusts to 20 kt. Seas 3 ft.
Wave Detail: S 3 ft at 5 seconds and E 1 foot at 9 seconds. A
chance of showers and tstms. 
.SUN...SW winds 10 to 15 kt. Seas 2 to 3 ft. Wave Detail: SW 3 ft
at 5 seconds and E 1 foot at 9 seconds. A slight chance of
showers and tstms in the morning. 
.SUN NIGHT...SW winds 10 to 15 kt with gusts to 20 kt. Seas 3 ft.
Wave Detail: S 3 ft at 5 seconds and E 1 foot at 8 seconds. A
slight chance of showers and tstms after midnight. 
.MON...SW winds 10 to 15 kt. Seas 2 to 3 ft. Wave Detail: S 3 ft
at 5 seconds and E 1 foot at 8 seconds. A chance of showers with
a slight chance of tstms in the afternoon. 
.MON NIGHT...SW winds 10 to 15 kt. Seas 2 to 3 ft. Wave Detail:
SW 2 ft at 5 seconds and E 1 foot at 12 seconds. A chance of
showers and tstms. 
.TUE...SW winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: S 2 ft
at 5 seconds and E 1 foot at 11 seconds. A chance of showers and
tstms. 
.TUE NIGHT...SW winds 10 to 15 kt. Seas 2 to 3 ft. Showers likely
with a chance of tstms. 
.WED...SW 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 2 to 3 ft. Showers likely
with a chance of tstms. 
.THU...SW winds 10 to 15 kt. Seas 2 to 3 ft. A chance of showers
and tstms. 
.THU NIGHT...SW winds 10 to 15 kt. Seas 3 ft. Showers likely with
a chance of tstms.  

Winds and seas higher in and near tstms.

$$

AMZ362-231100-
Coastal waters from Edisto Beach SC to Savannah GA out 20 NM-
539 PM EDT Sat Aug 22 2026

.TONIGHT...SW winds 10 to 15 kt with gusts to 20 kt. Seas 2 to
3 ft. Wave Detail: S 3 ft at 5 seconds and SE 1 foot at
9 seconds. A chance of showers and tstms until early morning,
then a slight chance of showers and tstms late. 
.SUN...SW winds 10 to 15 kt. Seas 2 to 3 ft. Wave Detail: S 2 ft
at 5 seconds and E 1 foot at 9 seconds. 
.SUN NIGHT...SW winds 10 to 15 kt with gusts to 20 kt. Seas 2 to
3 ft. Wave Detail: S 3 ft at 5 seconds and E 1 foot at 8 seconds.
A slight chance of showers and tstms after midnight. 
.MON...SW winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: S 3 ft
at 5 seconds and E 1 foot at 8 seconds. A slight chance of
showers and tstms in the afternoon. 
.MON NIGHT...SW winds 10 to 15 kt. Seas 2 to 3 ft. Wave Detail: S
2 ft at 5 seconds and E 1 foot at 8 seconds. A slight chance of
showers and tstms. 
.TUE...SW winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: S 2 ft
at 5 seconds and E 1 foot at 11 seconds. A slight chance of
showers and tstms in the morning, then a chance of showers and
tstms in the afternoon. 
.TUE NIGHT...SW winds 10 to 15 kt. Seas 2 ft. Showers likely with
a chance of tstms. 
.WED...SW winds 5 to 10 kt. Seas 2 ft. A chance of showers and
tstms. 
.WED NIGHT...S winds 10 to 15 kt. Seas 2 to 3 ft. Showers likely
with a chance of tstms. 
.THU...SW winds 10 to 15 kt. Seas 2 to 3 ft. A chance of showers
and tstms. 
.THU NIGHT...SW winds 10 to 15 kt. Seas 2 to 3 ft. Showers likely
with a chance of tstms.  

Winds and seas higher in and near tstms.

$$

AMZ364-231100-
Coastal waters from Savannah GA to Altamaha Sound GA out 20 nm,
including Grays Reef National Marine Sanctuary-
539 PM EDT Sat Aug 22 2026

.TONIGHT...SW winds 10 to 15 kt. Seas 2 to 3 ft. Wave Detail: S
2 ft at 4 seconds and SE 1 foot at 9 seconds. A chance of showers
and tstms until early morning. 
.SUN...W winds 5 to 10 kt, becoming S 10 to 15 kt in the
afternoon. Seas 2 ft. Wave Detail: S 2 ft at 4 seconds and SE
1 foot at 9 seconds. 
.SUN NIGHT...SW winds 10 to 15 kt. Seas 2 to 3 ft. Wave Detail: S
3 ft at 4 seconds and E 1 foot at 8 seconds. 
.MON...SW winds 5 to 10 kt, becoming S in the afternoon. Seas
2 to 3 ft. Wave Detail: S 2 ft at 5 seconds and E 1 foot at
8 seconds. A chance of showers with a slight chance of tstms in
the afternoon. 
.MON NIGHT...SW winds 10 to 15 kt. Seas 2 to 3 ft. Wave Detail: S
2 ft at 5 seconds and E 1 foot at 8 seconds. A chance of showers
with a slight chance of tstms. 
.TUE...SW winds 5 to 10 kt, becoming S 10 to 15 kt in the
afternoon. Seas 2 ft. Wave Detail: S 2 ft at 5 seconds and E
1 foot at 11 seconds. A chance of showers and tstms in the
afternoon. 
.TUE NIGHT...SW winds 10 to 15 kt. Seas 2 ft. A chance of showers
and tstms. 
.WED...SW winds 10 to 15 kt. Seas 2 ft. A chance of showers and
tstms. 
.WED NIGHT...S winds 10 to 15 kt. Seas 2 to 3 ft. A chance of
showers and tstms. 
.THU...SW winds 10 to 15 kt. Seas 2 ft. A chance of showers and
tstms. 
.THU NIGHT...SW winds 10 to 15 kt. Seas 2 to 3 ft. A chance of
showers and tstms.  

Winds and seas higher in and near tstms.

$$

AMZ380-231100-
Waters from South Santee River SC to Edisto Beach SC extending
from 20 to 60 NM-
539 PM EDT Sat Aug 22 2026

.TONIGHT...SW winds 10 to 15 kt. Seas 3 to 4 ft. Wave Detail: SW
3 ft at 5 seconds and E 1 foot at 9 seconds. A chance of showers
this evening. A chance of tstms. Showers likely after midnight. 
.SUN...SW winds 10 to 15 kt. Seas 3 to 4 ft. Wave Detail: SW 3 ft
at 5 seconds and E 1 foot at 9 seconds. A chance of showers and
tstms in the morning. 
.SUN NIGHT...SW winds 10 to 15 kt with gusts to 20 kt. Seas 3 ft.
Wave Detail: SW 3 ft at 5 seconds and E 1 foot at 8 seconds. A
chance of showers and tstms after midnight. 
.MON...SW winds 10 to 15 kt. Seas 3 ft. Wave Detail: SW 3 ft at
5 seconds and E 1 foot at 8 seconds. A slight chance of showers
and tstms. 
.MON NIGHT...SW winds 10 to 15 kt. Seas 3 ft. Wave Detail: SW
3 ft at 5 seconds and E 1 foot at 12 seconds. A chance of
showers. A slight chance of tstms in the evening, then a chance
of tstms after midnight. 
.TUE...SW winds 10 kt. Seas 2 to 3 ft. Wave Detail: SW 3 ft at
5 seconds and E 1 foot at 11 seconds. A chance of showers and
tstms. 
.TUE NIGHT...SW winds 10 to 15 kt. Seas 2 to 3 ft. Showers
likely. A chance of tstms in the evening, then tstms likely after
midnight. 
.WED...SW 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 2 to 3 ft. Showers likely
with a chance of tstms. 
.THU...SW winds 10 to 15 kt. Seas 3 ft. Showers likely with a
chance of tstms. 
.THU NIGHT...SW 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.

$$

AMZ382-231100-
Waters from Edisto Beach SC to Savannah GA extending from 20 to
60 NM-
539 PM EDT Sat Aug 22 2026

.TONIGHT...SW winds 15 kt with gusts to 20 kt. Seas 3 to 4 ft.
Wave Detail: SW 3 ft at 4 seconds and SE 1 foot at 9 seconds. A
chance of showers and tstms. 
.SUN...SW winds 10 to 15 kt. Seas 3 to 4 ft, subsiding to 2 to
3 ft in the afternoon. Wave Detail: SW 3 ft at 5 seconds and SE
1 foot at 9 seconds, becoming SW 3 ft at 5 seconds and E 1 foot
at 8 seconds. A chance of showers and tstms in the morning. 
.SUN NIGHT...SW winds 10 to 15 kt with gusts to 20 kt. Seas 3 ft.
Wave Detail: SW 3 ft at 4 seconds and E 1 foot at 8 seconds. A
slight chance of showers and tstms after midnight. 
.MON...SW winds 10 to 15 kt. Seas 2 to 3 ft. Wave Detail: S 3 ft
at 5 seconds and E 1 foot at 8 seconds. 
.MON NIGHT...SW winds 10 to 15 kt. Seas 2 to 3 ft. Wave Detail: S
3 ft at 5 seconds and E 1 foot at 12 seconds. A chance of
showers. A slight chance of tstms in the evening, then a chance
of tstms after midnight. 
.TUE...SW winds 10 to 15 kt. Seas 2 to 3 ft. Wave Detail: SW 3 ft
at 5 seconds and E 1 foot at 11 seconds. A chance of showers and
tstms. 
.TUE NIGHT...SW winds 10 to 15 kt. Seas 2 to 3 ft. A chance of
tstms. A chance of showers in the evening, then showers likely
after midnight. 
.WED...SW 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 2 to 3 ft. Showers likely
with a chance of tstms. 
.THU...SW winds 10 to 15 kt. Seas 2 to 3 ft. A chance of showers
and tstms. 
.THU NIGHT...S winds 10 to 15 kt. Seas 3 ft. Showers likely with
a chance of tstms.  

Winds and seas higher in and near tstms.

$$

AMZ384-231100-
Waters from Savannah GA to Altamaha Sound GA extending from 20 to
60 NM-
539 PM EDT Sat Aug 22 2026

.TONIGHT...SW winds 10 to 15 kt with gusts to 20 kt. Seas 2 to
3 ft. Wave Detail: SW 3 ft at 4 seconds and SE 1 foot at
9 seconds. A chance of showers and tstms until early morning,
then a slight chance of showers and tstms late. 
.SUN...SW winds 10 to 15 kt. Seas 2 to 3 ft. Wave Detail: SW 3 ft
at 4 seconds and SE 1 foot at 9 seconds. A slight chance of
showers and tstms in the morning. 
.SUN NIGHT...SW winds 10 to 15 kt with gusts to 20 kt. Seas 2 to
3 ft. Wave Detail: S 3 ft at 4 seconds and E 1 foot at 8 seconds.
.MON...SW winds 10 to 15 kt with gusts to 20 kt, diminishing to
5 to 10 kt in the afternoon. Seas 2 to 3 ft. Wave Detail: S 3 ft
at 5 seconds and E 1 foot at 8 seconds. A slight chance of
showers in the afternoon. 
.MON NIGHT...S winds 10 to 15 kt with gusts to 20 kt. Seas 2 to
3 ft. Wave Detail: S 3 ft at 5 seconds and E 2 ft at 12 seconds.
A chance of showers with a slight chance of tstms. 
.TUE...SW winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: S 3 ft
at 5 seconds and E 1 foot at 8 seconds. A slight chance of
showers and tstms in the morning, then a chance of showers and
tstms in the afternoon. 
.TUE NIGHT...SW winds 10 to 15 kt. Seas 2 to 3 ft. A chance of
showers and tstms. 
.WED...SW winds 10 to 15 kt. Seas 2 to 3 ft. A chance of showers
and tstms. 
.WED NIGHT...S winds 10 to 15 kt. Seas 2 to 3 ft. A chance of
showers and tstms. 
.THU...SW winds 10 kt. Seas 2 to 3 ft. A chance of showers and
tstms. 
.THU NIGHT...S winds 10 to 15 kt. Seas 2 to 3 ft. A chance of
showers and tstms.  

Winds and seas higher in and near tstms.

$$