453
FZUS52 KCHS 311050
CWFCHS

Coastal Waters Forecast
National Weather Service Charleston SC
650 AM EDT Fri Jul 31 2026

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

AMZ300-010000-
650 AM EDT Fri Jul 31 2026

.Synopsis for the coastal waters of south coastal South Carolina
and north coastal Georgia...
A stationary front will linger across southeast South Carolina
and southeast Georgia through tonight, followed by unsettled
weather through early next week.

$$

AMZ340-010000-
Charleston Harbor-
650 AM EDT Fri Jul 31 2026

.TODAY...E winds 5 kt, becoming SE this afternoon.
.TONIGHT...S winds 5 to 10 kt.
.SAT...SE winds 5 to 10 kt, increasing to 10 to 15 kt with gusts
to 20 kt in the afternoon. A chance of showers with a slight
chance of tstms.
.SAT NIGHT...S winds 10 to 15 kt, diminishing to 5 to 10 kt after
midnight. A chance of tstms. A chance of showers in the evening,
then showers likely after midnight.
.SUN...SW winds 10 to 15 kt, becoming S 15 to 20 kt in the
afternoon. Waves 1 to 2 ft. Showers with a chance of tstms.
.SUN NIGHT...SW winds 10 to 15 kt with gusts to 25 kt. Showers.
Tstms likely, mainly in the evening.
.MON...SW winds 10 to 15 kt. Showers with tstms likely.
.MON NIGHT...SW winds 10 to 15 kt. Showers likely with a chance
of tstms.
.TUE...SW winds 5 to 10 kt. A chance of showers and tstms.
.TUE 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 86 degrees.

$$

AMZ360-010000-
Coastal waters from South Santee River to Edisto Beach SC out
20 NM-
650 AM EDT Fri Jul 31 2026

.TODAY...E winds 5 kt, becoming SE this afternoon. Seas 2 ft.
Wave Detail: S 2 ft at 7 seconds.
.TONIGHT...S winds 10 kt. Seas 2 ft. Wave Detail: S 2 ft at
5 seconds and SE 1 foot at 8 seconds.
.SAT...SE winds 5 to 10 kt, increasing to 10 to 15 kt with gusts
to 20 kt in the afternoon. Seas 2 ft. Wave Detail: S 2 ft at
4 seconds and SE 2 ft at 8 seconds. A slight chance of showers. A
slight chance of tstms in the afternoon.
.SAT NIGHT...S winds 10 to 15 kt with gusts to 20 kt. Seas 2 to
3 ft. Wave Detail: SE 3 ft at 4 seconds and SE 1 foot at
9 seconds. A chance of tstms. A chance of showers in the evening,
then showers after midnight.
.SUN...S winds 15 to 20 kt with gusts to 25 kt. Seas 3 to 4 ft,
building to 4 to 6 ft in the afternoon. Wave Detail: S 4 ft at
5 seconds and SE 1 foot at 9 seconds, becoming S 6 ft at
6 seconds. Showers with a chance of tstms.
.SUN NIGHT...SW winds 20 kt with gusts to 25 kt. Seas 5 to 6 ft.
Wave Detail: S 6 ft at 6 seconds. Showers with tstms likely in
the evening, then showers with a chance of tstms after midnight.
.MON...SW winds 15 to 20 kt. Seas 4 to 6 ft. Showers with tstms
likely.
.MON NIGHT...SW winds 15 to 20 kt. Seas 4 to 5 ft. Showers with a
chance of tstms.
.TUE...SW winds 10 kt. Seas 3 ft. A chance of showers and tstms.
.TUE NIGHT...S winds 5 to 10 kt. Seas 3 ft. A chance of showers
and tstms.

Winds and seas higher in and near tstms.

$$

AMZ362-010000-
Coastal waters from Edisto Beach SC to Savannah GA out 20 NM-
650 AM EDT Fri Jul 31 2026

.TODAY...SE winds 5 to 10 kt. Seas 2 ft. Wave Detail: SE 2 ft at
6 seconds.
.TONIGHT...S winds 10 kt. Seas 2 ft. Wave Detail: S 2 ft at
5 seconds and SE 1 foot at 8 seconds.
.SAT...S winds 5 to 10 kt, becoming SE 10 to 15 kt with gusts to
20 kt in the afternoon. Seas 2 ft. Wave Detail: S 2 ft at
4 seconds and SE 2 ft at 8 seconds. A slight chance of tstms. A
slight chance of showers.
.SAT 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 SE 1 foot at
8 seconds. Showers with a chance of tstms.
.SUN...SW winds 15 to 20 kt with gusts to 25 kt. Seas 3 to 4 ft,
building to 4 to 5 ft in the afternoon. Wave Detail: S 3 ft at
5 seconds and SE 2 ft at 9 seconds, becoming S 5 ft at 5 seconds
and SE 2 ft at 8 seconds. Showers with a chance of tstms.
.SUN NIGHT...SW winds 15 to 20 kt with gusts to 25 kt. Seas 4 to
6 ft, subsiding to 4 to 5 ft after midnight. Wave Detail: S 5 ft
at 6 seconds, becoming S 5 ft at 7 seconds. Showers. Tstms
likely, mainly in the evening.
.MON...SW winds 15 to 20 kt. Seas 4 to 5 ft. Showers with tstms
likely.
.MON NIGHT...SW winds 15 to 20 kt. Seas 3 to 4 ft. Showers likely
with a chance of tstms.
.TUE...SW winds 5 to 10 kt. Seas 2 to 3 ft. A chance of showers
and tstms.
.TUE 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.

$$

AMZ364-010000-
Coastal waters from Savannah GA to Altamaha Sound GA out 20 nm,
including Grays Reef National Marine Sanctuary-
650 AM EDT Fri Jul 31 2026

.TODAY...SE winds 5 to 10 kt. Seas 2 ft. Wave Detail: S 2 ft at
5 seconds and E 1 foot at 8 seconds.
.TONIGHT...S winds 5 to 10 kt. Seas 2 ft. Wave Detail: SE 2 ft at
5 seconds and SE 1 foot at 8 seconds.
.SAT...S winds 5 to 10 kt, increasing to 10 to 15 kt in the
afternoon. Seas 2 ft. Wave Detail: S 2 ft at 4 seconds and SE
1 foot at 8 seconds. A slight chance of showers and tstms in the
afternoon.
.SAT NIGHT...S winds 10 to 15 kt. Seas 2 to 3 ft. Wave Detail: S
3 ft at 5 seconds and E 1 foot at 9 seconds. Showers with a
chance of tstms.
.SUN...SW winds 15 to 20 kt with gusts to 25 kt. Seas 3 to 4 ft.
Wave Detail: S 4 ft at 5 seconds and SE 1 foot at 9 seconds.
Showers likely with a slight chance of tstms in the morning, then
showers with a chance of tstms in the afternoon.
.SUN NIGHT...SW winds 15 to 20 kt with gusts to 25 kt. Seas 4 to
5 ft. Wave Detail: SE 5 ft at 6 seconds. A chance of tstms.
Showers.
.MON...SW winds 15 to 20 kt. Seas 3 to 4 ft. Showers with tstms
likely.
.MON NIGHT...SW winds 15 to 20 kt. Seas 3 to 4 ft. A chance of
showers and tstms.
.TUE...SW winds 5 to 10 kt. Seas 2 to 3 ft. A chance of showers
and tstms.
.TUE 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.

$$

AMZ380-010000-
Waters from South Santee River SC to Edisto Beach SC extending
from 20 to 60 NM-
650 AM EDT Fri Jul 31 2026

.TODAY...NE winds 5 kt, becoming SE this afternoon. Seas 2 to
3 ft. Wave Detail: S 2 ft at 7 seconds and NE 1 foot at
4 seconds.
.TONIGHT...S winds 5 to 10 kt. Seas 2 ft. Wave Detail: S 2 ft at
5 seconds and SE 2 ft at 8 seconds.
.SAT...SE winds 5 to 10 kt, increasing to 10 to 15 kt in the
afternoon. Seas 2 ft. Wave Detail: S 2 ft at 4 seconds and SE
2 ft at 7 seconds.
.SAT NIGHT...S winds 10 to 15 kt with gusts to 20 kt. Seas 2 to
3 ft, building to 3 to 4 ft after midnight. Wave Detail: S 3 ft
at 4 seconds and SE 2 ft at 9 seconds, becoming S 4 ft at
5 seconds and E 1 foot at 9 seconds. A chance of tstms. A chance
of showers in the evening, then showers after midnight.
.SUN...S winds 15 to 20 kt with gusts to 25 kt. Seas 4 to 5 ft,
building to 5 to 6 ft in the afternoon. Wave Detail: S 4 ft at
5 seconds and SE 3 ft at 8 seconds, becoming S 5 ft at 7 seconds.
Showers with a chance of tstms.
.SUN NIGHT...SW winds 20 kt with gusts to 25 kt. Seas 6 to 7 ft.
Wave Detail: S 5 ft at 7 seconds. Tstms likely. Showers.
.MON...SW winds 15 to 20 kt. Seas 5 to 6 ft. Showers with a
chance of tstms.
.MON NIGHT...SW winds 15 to 20 kt. Seas 4 to 5 ft. Showers likely
with a chance of tstms.
.TUE...SW winds 10 to 15 kt. Seas 3 to 4 ft. A chance of showers
and tstms.
.TUE NIGHT...S winds 10 kt. Seas 3 ft. A chance of showers and
tstms.

Winds and seas higher in and near tstms.

$$

AMZ382-010000-
Waters from Edisto Beach SC to Savannah GA extending from 20 to
60 NM-
650 AM EDT Fri Jul 31 2026

.TODAY...SE winds 5 to 10 kt. Seas 2 ft. Wave Detail: S 2 ft at
5 seconds and SE 1 foot at 8 seconds.
.TONIGHT...SE winds 5 to 10 kt. Seas 2 ft. Wave Detail: S 2 ft at
5 seconds and SE 2 ft at 8 seconds.
.SAT...SE winds 5 to 10 kt, increasing to 10 to 15 kt in the
afternoon. Seas 2 ft. Wave Detail: S 2 ft at 4 seconds and SE
2 ft at 7 seconds. A slight chance of tstms. A slight chance of
showers.
.SAT NIGHT...S winds 15 to 20 kt. Seas 2 to 3 ft, building to
3 to 4 ft after midnight. Wave Detail: S 3 ft at 4 seconds and SE
1 foot at 8 seconds, becoming S 4 ft at 5 seconds and E 1 foot at
9 seconds. A chance of tstms. A chance of showers in the evening,
then showers after midnight.
.SUN...SW winds 15 to 20 kt with gusts to 25 kt. Seas 4 to 5 ft,
building to 4 to 6 ft in the afternoon. Wave Detail: S 4 ft at
5 seconds and SE 2 ft at 9 seconds, becoming S 5 ft at 6 seconds.
Showers with a chance of tstms.
.SUN NIGHT...SW winds 20 to 25 kt. Seas 5 to 6 ft. Wave Detail: S
5 ft at 7 seconds. Showers with tstms likely.
.MON...SW winds 15 to 20 kt. Seas 4 to 6 ft. Showers likely with
a chance of tstms.
.MON NIGHT...SW winds 15 to 20 kt. Seas 4 to 5 ft. Showers likely
with a chance of tstms.
.TUE...SW winds 10 to 15 kt. Seas 3 to 4 ft. A chance of showers
and tstms.
.TUE NIGHT...S winds 10 kt. Seas 3 ft. A chance of showers and
tstms.

Winds and seas higher in and near tstms.

$$

AMZ384-010000-
Waters from Savannah GA to Altamaha Sound GA extending from 20 to
60 NM-
650 AM EDT Fri Jul 31 2026

.TODAY...SE winds 5 to 10 kt. Seas 2 ft. Wave Detail: S 2 ft at
5 seconds and SE 1 foot at 8 seconds.
.TONIGHT...S winds 5 to 10 kt. Seas 2 ft. Wave Detail: S 2 ft at
4 seconds and SE 1 foot at 9 seconds.
.SAT...S winds 5 to 10 kt, increasing to 10 to 15 kt in the
afternoon. 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.
.SAT NIGHT...S winds 15 kt with gusts to 20 kt. Seas 2 to 3 ft,
building to 3 to 4 ft after midnight. Wave Detail: S 3 ft at
4 seconds and SE 1 foot at 9 seconds, becoming S 3 ft at
5 seconds and SE 1 foot at 9 seconds. A chance of tstms. Showers.
.SUN...SW winds 15 to 20 kt with gusts to 25 kt. Seas 3 to 4 ft,
building to 4 to 5 ft in the afternoon. Wave Detail: SW 3 ft at
5 seconds and SE 2 ft at 9 seconds, becoming S 4 ft at 5 seconds
and SE 2 ft at 8 seconds. Showers. A chance of tstms, mainly in
the morning.
.SUN NIGHT...S winds 20 to 25 kt, becoming SW 15 to 20 kt after
midnight. Seas 4 to 6 ft, subsiding to 4 to 5 ft after midnight.
Wave Detail: S 5 ft at 5 seconds and SE 3 ft at 8 seconds,
becoming S 4 ft at 6 seconds. Showers likely with a chance of
tstms.
.MON...SW winds 15 to 20 kt. Seas 4 to 5 ft. Showers likely with
a chance of tstms.
.MON NIGHT...SW winds 10 to 15 kt. Seas 3 to 4 ft. A chance of
showers and tstms.
.TUE...SW winds 5 to 10 kt. Seas 2 to 3 ft. A chance of showers
and tstms.
.TUE NIGHT...S winds 10 kt. Seas 2 to 3 ft. A chance of showers
and tstms.

Winds and seas higher in and near tstms.

$$