525
FZUS52 KCHS 232140
CWFCHS

Coastal Waters Forecast
National Weather Service Charleston SC
539 PM EDT Sun Aug 23 2026

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

AMZ300-241100-
539 PM EDT Sun Aug 23 2026

.Synopsis for the coastal waters of south coastal South Carolina
and north coastal Georgia...
Typical summertime conditions will persist across the local
waters early this week. Shower and thunderstorm activity may
increase during the middle and late week.

$$

AMZ340-241100-
Charleston Harbor-
539 PM EDT Sun Aug 23 2026

.TONIGHT...S winds 5 to 10 kt. A slight chance of showers and
tstms early this evening, then a chance of showers and tstms late
this evening.
.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.
.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...S winds 5 kt. A chance of tstms. A chance of showers
in the evening, then showers likely after midnight.
.WED...S winds 5 to 10 kt. A chance of tstms. Showers likely.
.WED NIGHT...S winds 5 to 10 kt. A chance of showers and 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.
.FRI...SW winds 5 to 10 kt. A chance of showers and tstms.
.FRI 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.

$$

AMZ360-241100-
Coastal waters from South Santee River to Edisto Beach SC out
20 NM-
539 PM EDT Sun Aug 23 2026

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

$$

AMZ362-241100-
Coastal waters from Edisto Beach SC to Savannah GA out 20 NM-
539 PM EDT Sun Aug 23 2026

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

Winds and seas higher in and near tstms.

$$

AMZ364-241100-
Coastal waters from Savannah GA to Altamaha Sound GA out 20 nm,
including Grays Reef National Marine Sanctuary-
539 PM EDT Sun Aug 23 2026

.TONIGHT...S winds 10 to 15 kt, becoming SW late. Seas 2 ft. Wave
Detail: S 2 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 ft. Wave Detail: S 2 ft at 4 seconds and E 1 foot at 8 seconds.
A chance of showers and tstms in the afternoon.
.MON NIGHT...SW winds 5 to 10 kt. Seas 2 ft. Wave Detail: S 2 ft
at 4 seconds and SE 2 ft at 8 seconds. A chance of showers and
tstms, mainly in the evening.
.TUE...SW winds 5 to 10 kt, becoming S in the afternoon. Seas
2 ft. Wave Detail: S 2 ft at 5 seconds and SE 1 foot at
11 seconds. A chance of showers. A slight chance of tstms in the
morning, then a chance of tstms in the afternoon.
.TUE NIGHT...S winds 5 to 10 kt. Seas 2 ft. Wave Detail: S 2 ft
at 4 seconds and SE 1 foot at 11 seconds. Showers likely. A
chance of tstms, mainly in the evening.
.WED...SW winds 5 to 10 kt, becoming S in the afternoon. Seas
2 ft. Wave Detail: S 2 ft at 5 seconds and SE 1 foot at
10 seconds. A chance of showers and tstms.
.WED NIGHT...S winds 10 to 15 kt. Seas 2 ft. A chance of showers
and 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 2 to 3 ft. A chance of
showers and tstms.
.FRI...SW winds 5 to 10 kt. Seas 2 ft. A chance of showers and
tstms.
.FRI NIGHT...S winds 5 to 10 kt. Seas 2 ft. A chance of showers
and tstms.

Winds and seas higher in and near tstms.

$$

AMZ380-241100-
Waters from South Santee River SC to Edisto Beach SC extending
from 20 to 60 NM-
539 PM EDT Sun Aug 23 2026

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

Winds and seas higher in and near tstms.

$$

AMZ382-241100-
Waters from Edisto Beach SC to Savannah GA extending from 20 to
60 NM-
539 PM EDT Sun Aug 23 2026

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

Winds and seas higher in and near tstms.

$$

AMZ384-241100-
Waters from Savannah GA to Altamaha Sound GA extending from 20 to
60 NM-
539 PM EDT Sun Aug 23 2026

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

Winds and seas higher in and near tstms.

$$