894
FZUS52 KCHS 152140
CWFCHS

Coastal Waters Forecast
National Weather Service Charleston SC
539 PM EDT Sat Aug 15 2026

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

AMZ300-161100-
539 PM EDT Sat Aug 15 2026

.Synopsis for the coastal waters of south coastal South Carolina
and north coastal Georgia...
The combination of strong high pressure over the northern Gulf
and surface troughing over the Southeast U.S. will yield a
typical summertime wind pattern over our coastal waters into next
week, along with generally low seas.

$$

AMZ340-161100-
Charleston Harbor-
540 PM EDT Sat Aug 15 2026

.TONIGHT...SW winds 10 kt, becoming W late. A slight chance of
showers and tstms this evening.
.SUN...W winds 5 kt, becoming S in the afternoon. A chance of
showers and tstms in the afternoon.
.SUN NIGHT...SW winds 5 to 10 kt. A slight chance of showers and
tstms in the evening.
.MON...SW winds 5 to 10 kt.
.MON NIGHT...SW winds 5 to 10 kt.
.TUE...W winds 5 kt, becoming SW in the afternoon.
.TUE NIGHT...SW winds 5 to 10 kt. A slight chance of showers and
tstms.
.WED...SW winds 5 to 10 kt. A slight chance of showers and tstms.
.WED NIGHT...SW winds 5 to 10 kt.
.THU...SW winds 5 to 10 kt.
.THU NIGHT...SW 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 87 degrees.

$$

AMZ360-161100-
Coastal waters from South Santee River to Edisto Beach SC out
20 NM-
540 PM EDT Sat Aug 15 2026

.TONIGHT...SW winds 10 to 15 kt with gusts to 20 kt, becoming W
5 to 10 kt late. Seas 2 to 3 ft. Wave Detail: SW 2 ft at
4 seconds and SE 1 foot at 8 seconds. A slight chance of showers
and tstms early this evening. A slight chance of showers and
tstms late.
.SUN...W winds 5 to 10 kt, becoming S in the afternoon. Seas 2 to
3 ft. Wave Detail: SW 2 ft at 5 seconds and SE 1 foot at
8 seconds. A slight chance of showers and tstms.
.SUN NIGHT...SW winds 10 kt. Seas 2 to 3 ft. Wave Detail: S 2 ft
at 5 seconds and SE 2 ft at 8 seconds.
.MON...W winds 5 to 10 kt, becoming SW 10 to 15 kt with gusts to
20 kt in the afternoon. Seas 2 to 3 ft. Wave Detail: SW 2 ft at
5 seconds and SE 2 ft at 8 seconds.
.MON NIGHT...SW winds 10 to 15 kt. Seas 3 ft. Wave Detail: S 3 ft
at 4 seconds and SE 2 ft at 8 seconds.
.TUE...W winds 5 to 10 kt, becoming SW 10 to 15 kt in the
afternoon. Seas 2 to 3 ft. Wave Detail: SW 2 ft at 5 seconds and
SE 2 ft at 8 seconds.
.TUE NIGHT...SW winds 10 to 15 kt, diminishing to 5 to 10 kt
after midnight. Seas 2 to 3 ft. A slight chance of showers and
tstms.
.WED...SW winds 5 to 10 kt. Seas 2 to 3 ft.
.WED NIGHT...SW winds 5 to 10 kt. Seas 2 to 3 ft.
.THU...SW winds 10 to 15 kt. Seas 2 to 3 ft.
.THU NIGHT...SW winds 10 to 15 kt. Seas 2 to 3 ft. A slight
chance of showers and tstms.

Winds and seas higher in and near tstms.

$$

AMZ362-161100-
Coastal waters from Edisto Beach SC to Savannah GA out 20 NM-
540 PM EDT Sat Aug 15 2026

.TONIGHT...SW winds 10 to 15 kt, becoming W late. Seas 2 ft. Wave
Detail: S 2 ft at 4 seconds and SE 1 foot at 8 seconds.
.SUN...W winds 5 to 10 kt, becoming SW in the afternoon. Seas
2 ft. Wave Detail: SW 2 ft at 4 seconds and SE 1 foot at
8 seconds.
.SUN NIGHT...SW winds 10 kt. Seas 2 to 3 ft. Wave Detail: S 2 ft
at 4 seconds and SE 2 ft at 8 seconds.
.MON...W winds 5 to 10 kt, becoming SW 10 to 15 kt with gusts to
20 kt in the afternoon. 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 with gusts to 20 kt. Seas 2 to
3 ft. Wave Detail: S 2 ft at 4 seconds and SE 2 ft at 8 seconds.
.TUE...W winds 5 to 10 kt, becoming SW in the afternoon. Seas
2 to 3 ft. Wave Detail: SW 2 ft at 4 seconds and SE 2 ft at
8 seconds.
.TUE NIGHT...SW winds 10 to 15 kt, becoming W 5 to 10 kt after
midnight. Seas 3 ft.
.WED...SW winds 5 to 10 kt. Seas 2 to 3 ft.
.WED NIGHT...SW winds 5 to 10 kt. Seas 2 to 3 ft.
.THU...SW winds 10 to 15 kt. Seas 2 to 3 ft.
.THU NIGHT...S winds 10 to 15 kt. Seas 2 to 3 ft. A slight chance
of showers and tstms.

Winds and seas higher in and near tstms.

$$

AMZ364-161100-
Coastal waters from Savannah GA to Altamaha Sound GA out 20 nm,
including Grays Reef National Marine Sanctuary-
540 PM EDT Sat Aug 15 2026

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

Winds and seas higher in and near tstms.

$$

AMZ380-161100-
Waters from South Santee River SC to Edisto Beach SC extending
from 20 to 60 NM-
540 PM EDT Sat Aug 15 2026

.TONIGHT...SW winds 10 to 15 kt. Seas 3 ft. Wave Detail: SW 2 ft
at 4 seconds and SE 2 ft at 8 seconds. A slight chance of showers
and tstms late.
.SUN...SW winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: SW 2 ft
at 5 seconds and SE 2 ft at 8 seconds. A slight chance of showers
and tstms in the morning.
.SUN NIGHT...SW winds 5 to 10 kt. Seas 3 ft. Wave Detail: SW 2 ft
at 5 seconds and SE 2 ft at 8 seconds.
.MON...SW winds 10 to 15 kt. Seas 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 with gusts to 20 kt. Seas 3 to
4 ft. Wave Detail: SW 3 ft at 4 seconds and SE 2 ft at 8 seconds.
.TUE...SW winds 10 to 15 kt. Seas 3 to 4 ft. Wave Detail: SW 3 ft
at 5 seconds and SE 2 ft at 9 seconds.
.TUE NIGHT...SW winds 5 to 10 kt. Seas 3 ft. A slight chance of
showers and tstms.
.WED...SW winds 5 to 10 kt. Seas 3 ft.
.WED NIGHT...SW winds 5 to 10 kt. Seas 2 to 3 ft.
.THU...SW winds 10 to 15 kt. Seas 2 to 3 ft.
.THU NIGHT...SW winds 10 to 15 kt. Seas 2 to 3 ft. A slight
chance of showers and tstms.

Winds and seas higher in and near tstms.

$$

AMZ382-161100-
Waters from Edisto Beach SC to Savannah GA extending from 20 to
60 NM-
540 PM EDT Sat Aug 15 2026

.TONIGHT...SW winds 10 to 15 kt. Seas 2 to 3 ft. Wave Detail: SW
3 ft at 4 seconds and SE 1 foot at 8 seconds.
.SUN...SW winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: SW 3 ft
at 4 seconds and SE 2 ft at 8 seconds.
.SUN 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 8 seconds.
.MON...SW winds 10 to 15 kt. Seas 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 with gusts to 20 kt. Seas 3 to
4 ft. Wave Detail: SW 3 ft at 4 seconds and SE 2 ft at 8 seconds.
.TUE...W winds 10 to 15 kt. Seas 3 to 4 ft. Wave Detail: SW 3 ft
at 5 seconds and SE 3 ft at 8 seconds.
.TUE NIGHT...SW winds 10 to 15 kt. Seas 3 to 4 ft.
.WED...SW winds 5 to 10 kt. Seas 3 to 4 ft.
.WED NIGHT...SW winds 10 to 15 kt. Seas 3 ft.
.THU...SW winds 10 to 15 kt. Seas 2 to 3 ft.
.THU NIGHT...S winds 10 to 15 kt. Seas 3 ft.

$$

AMZ384-161100-
Waters from Savannah GA to Altamaha Sound GA extending from 20 to
60 NM-
540 PM EDT Sat Aug 15 2026

.TONIGHT...SW winds 10 to 15 kt. Seas 2 to 3 ft. Wave Detail: SW
2 ft at 4 seconds and SE 1 foot at 8 seconds.
.SUN...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.
.SUN 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 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 3 ft. Wave Detail: SW
3 ft at 4 seconds and SE 2 ft at 8 seconds.
.TUE...SW winds 10 to 15 kt. Seas 2 to 3 ft. Wave Detail: SW 3 ft
at 4 seconds and SE 2 ft at 8 seconds.
.TUE NIGHT...SW winds 10 to 15 kt. Seas 3 to 4 ft.
.WED...SW winds 5 to 10 kt. Seas 2 to 3 ft.
.WED NIGHT...SW winds 10 to 15 kt. Seas 3 ft.
.THU...SW winds 5 to 10 kt. Seas 2 to 3 ft.
.THU NIGHT...S winds 10 to 15 kt. Seas 2 to 3 ft. A slight chance
of showers and tstms.

Winds and seas higher in and near tstms.

$$