392
FZUS52 KCHS 110958
CWFCHS

Coastal Waters Forecast
National Weather Service Charleston SC
558 AM EDT Mon Aug 11 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

AMZ300-112215-
558 AM EDT Mon Aug 11 2025

.Synopsis for the coastal waters of south coastal South Carolina
and north coastal Georgia...
A stationary front to the south of the region should dissipate
today. By mid to late week, surface high pressure will shift into
the Atlantic, while weak troughing forms inland.

$$

AMZ330-112215-
Charleston Harbor-
558 AM EDT Mon Aug 11 2025

.TODAY...SE winds 5 to 10 kt. Showers with tstms likely.
.TONIGHT...SE winds 5 to 10 kt. A slight chance of showers and
tstms in the evening, then a chance of showers and tstms after
midnight.
.TUE...S winds 5 to 10 kt. Showers likely with a chance of tstms.
.TUE NIGHT...S winds 5 to 10 kt. A chance of showers and tstms,
mainly in the evening.
.WED...SW winds 5 kt, increasing to 10 kt in the afternoon. A
chance of showers and tstms.
.WED NIGHT...SW 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. A chance of showers and tstms.
.FRI...SW winds 5 to 10 kt. A chance of showers and tstms.
.FRI NIGHT...E winds 5 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 82 degrees.

$$

AMZ350-112215-
Waters from South Santee River to Edisto Beach SC out 20 NM-
558 AM EDT Mon Aug 11 2025

.TODAY...SE winds 10 kt. Seas 3 ft. Wave Detail: E 2 ft at
6 seconds. Showers, tstms.
.TONIGHT...SE winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: E
2 ft at 6 seconds and SE 1 foot at 10 seconds. A chance of
showers and tstms.
.TUE...S winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: SE 2 ft
at 6 seconds and E 1 foot at 9 seconds. A chance of tstms.
Showers likely, mainly in the morning.
.TUE NIGHT...S winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: SE
2 ft at 6 seconds and SE 2 ft at 9 seconds. A slight chance of
showers and tstms in the evening, then a chance of showers and
tstms after midnight.
.WED...W winds 5 to 10 kt, becoming SW 10 to 15 kt in the
afternoon. Seas 2 ft. Wave Detail: SE 2 ft at 5 seconds and SE
2 ft at 9 seconds. A chance of showers and tstms.
.WED 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 9 seconds. 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...SW winds 5 to 10 kt. Seas 2 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.

$$

AMZ352-112215-
Waters from Edisto Beach SC to Savannah GA out 20 NM-
558 AM EDT Mon Aug 11 2025

.TODAY...SE winds 10 kt. Seas 3 ft. Wave Detail: SE 2 ft at
6 seconds. Tstms likely this morning. Showers. A chance of tstms
this afternoon.
.TONIGHT...SE winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: SE
2 ft at 6 seconds. A chance of showers and tstms.
.TUE...SE winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: SE 2 ft
at 6 seconds and E 1 foot at 10 seconds. A chance of showers and
tstms.
.TUE NIGHT...S winds 5 to 10 kt. Seas 2 ft. Wave Detail: SE 2 ft
at 6 seconds and E 1 foot at 9 seconds. A slight chance of
showers and tstms in the evening, then a chance of showers and
tstms after midnight.
.WED...SW winds 5 to 10 kt. Seas 2 ft. Wave Detail: SE 2 ft at
6 seconds and E 2 ft at 9 seconds. A chance of showers and tstms.
.WED NIGHT...SW winds 10 kt. Seas 2 ft. Wave Detail: SW 2 ft at
4 seconds and E 2 ft at 9 seconds. A chance of showers and tstms.
.THU...SW winds 5 to 10 kt. Seas 2 ft. A chance of showers and
tstms.
.THU NIGHT...SW winds 5 to 10 kt. Seas 2 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...SW winds 5 to 10 kt. Seas 2 ft. A chance of showers
and tstms.

Winds and seas higher in and near tstms.

$$

AMZ354-112215-
Waters from Savannah GA to Altamaha Sound GA out 20 NM, including
Grays Reef National Marine Sanctuary-
558 AM EDT Mon Aug 11 2025

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

Winds and seas higher in and near tstms.

$$

AMZ374-112215-
Waters from Savannah GA to Altamaha Sound GA from 20 to 60 NM-
558 AM EDT Mon Aug 11 2025

.TODAY...SE winds 10 to 15 kt. Seas 3 to 4 ft. Wave Detail: SE
3 ft at 5 seconds and E 3 ft at 8 seconds. Showers with tstms
likely this morning, then a chance of showers and tstms this
afternoon.
.TONIGHT...SE winds 10 to 15 kt. Seas 3 to 4 ft. Wave Detail: E
3 ft at 7 seconds and E 1 foot at 10 seconds. A chance of showers
and tstms.
.TUE...S winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: E 2 ft at
6 seconds and E 1 foot at 9 seconds. A chance of showers and
tstms.
.TUE NIGHT...S winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: E
2 ft at 6 seconds and SE 2 ft at 9 seconds. A slight chance of
showers and tstms in the evening, then a chance of showers and
tstms after midnight.
.WED...SW winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: E 2 ft
at 6 seconds and SE 2 ft at 9 seconds. A chance of showers. A
chance of tstms, mainly in the morning.
.WED NIGHT...SW winds 10 kt. Seas 2 to 3 ft. Wave Detail: S 2 ft
at 3 seconds and E 2 ft at 9 seconds. A chance of showers and
tstms.
.THU...SW winds 5 to 10 kt. Seas 2 to 3 ft. A chance of showers
and tstms.
.THU NIGHT...SW winds 10 kt. Seas 2 to 3 ft. A chance of showers
and tstms.
.FRI...W winds 5 to 10 kt. Seas 2 to 3 ft. A chance of showers
and tstms.
.FRI NIGHT...SW winds 5 to 10 kt. Seas 2 ft. A chance of showers
and tstms.

Winds and seas higher in and near tstms.

$$