021
FZUS52 KCHS 131815
CWFCHS

Coastal Waters Forecast
National Weather Service Charleston SC
215 PM EDT Sun Sep 13 2026

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

AMZ300-140800-
215 PM EDT Sun Sep 13 2026

.Synopsis for the coastal waters of south coastal South Carolina
and north coastal Georgia...
Weak surface troughing inland today will bring a gentle to
moderate breeze. A cold front will move south through our waters
late Monday into Tuesday, followed by high pressure persisting to
our north. This will cause a surge of northeast winds to a strong
breeze or near gale, along with elevated seas Tuesday and
Wednesday.

$$

AMZ340-140800-
Charleston Harbor-
215 PM EDT Sun Sep 13 2026

.THIS AFTERNOON...SW winds 5 to 10 kt.
.TONIGHT...SW winds 5 to 10 kt.
.MON...NW winds 5 kt, becoming SE in the afternoon.
.MON NIGHT...S winds 5 kt, becoming NE 10 to 15 kt with gusts to
20 kt after midnight. A slight chance of showers and tstms after
midnight.
.TUE...NE winds 15 to 20 kt with gusts to 25 kt. Waves 1 to 2 ft.
.TUE NIGHT...NE winds 10 to 15 kt.
.WED...NE winds 15 to 20 kt. Waves 1 to 2 ft.
.WED NIGHT...NE winds 10 to 15 kt.
.THU...NE winds 10 to 15 kt.
.THU NIGHT...NE winds 10 to 15 kt. A slight 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 84 degrees.

$$

AMZ360-140800-
Coastal waters from South Santee River to Edisto Beach SC out
20 NM-
215 PM EDT Sun Sep 13 2026

.THIS AFTERNOON...SW winds 5 to 10 kt. Seas 2 to 3 ft. Wave
Detail: SE 2 ft at 9 seconds and SW 1 foot at 4 seconds.
.TONIGHT...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.
.MON...W winds 5 to 10 kt, becoming S in the afternoon. Seas 2 to
3 ft. Wave Detail: SW 2 ft at 4 seconds and SE 2 ft at 9 seconds.
.MON NIGHT...S winds 5 kt, becoming NE 15 to 20 kt with gusts to
25 kt after midnight. Seas 2 to 3 ft. Wave Detail: E 3 ft at
9 seconds and SW 1 foot at 4 seconds. A slight chance of showers
and tstms after midnight.
.TUE...NE winds 20 to 25 kt with gusts to 30 kt. Seas 4 to 5 ft,
building to 5 to 6 ft in the afternoon. Wave Detail: E 5 ft at
5 seconds, becoming E 6 ft at 7 seconds.
.TUE NIGHT...NE winds 20 to 25 kt, diminishing to 15 to 20 kt
after midnight. Seas 5 to 6 ft, subsiding to 4 to 6 ft after
midnight. Wave Detail: E 6 ft at 7 seconds, becoming E 5 ft at
7 seconds.
.WED...NE winds 20 to 25 kt. Seas 4 to 6 ft.
.WED NIGHT...NE winds 15 to 20 kt. Seas 4 to 6 ft.
.THU...NE winds 15 to 20 kt. Seas 4 to 5 ft.
.THU NIGHT...NE winds 15 to 20 kt. Seas 4 to 5 ft. A chance of
showers and tstms.

Winds and seas higher in and near tstms.

$$

AMZ362-140800-
Coastal waters from Edisto Beach SC to Savannah GA out 20 NM-
215 PM EDT Sun Sep 13 2026

.THIS AFTERNOON...SW winds 5 to 10 kt. Seas 2 ft. Wave Detail: SE
2 ft at 8 seconds.
.TONIGHT...SW winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: SE
2 ft at 9 seconds.
.MON...NW winds 5 to 10 kt, becoming SE in the afternoon. Seas
2 ft. Wave Detail: SE 2 ft at 9 seconds.
.MON NIGHT...S winds 5 kt, becoming NE 15 to 20 kt after
midnight. Seas 2 ft. Wave Detail: SE 2 ft at 9 seconds.
.TUE...NE winds 20 to 25 kt. Seas 3 to 4 ft, building to 4 to
6 ft in the afternoon. Wave Detail: E 4 ft at 8 seconds, becoming
E 6 ft at 6 seconds. A slight chance of showers and tstms in the
morning, then a chance of showers in the afternoon.
.TUE NIGHT...E winds 20 to 25 kt, becoming NE 15 to 20 kt after
midnight. Seas 5 to 7 ft, subsiding to 5 to 6 ft after midnight.
Wave Detail: E 6 ft at 7 seconds.
.WED...NE winds 20 to 25 kt. Seas 4 to 6 ft.
.WED NIGHT...NE winds 20 to 25 kt. Seas 5 to 7 ft.
.THU...NE winds 15 to 20 kt. Seas 4 to 6 ft. A slight chance of
showers and tstms.
.THU NIGHT...NE winds 15 to 20 kt. Seas 4 to 5 ft. A chance of
showers and tstms.

Winds and seas higher in and near tstms.

$$

AMZ364-140800-
Coastal waters from Savannah GA to Altamaha Sound GA out 20 nm,
including Grays Reef National Marine Sanctuary-
215 PM EDT Sun Sep 13 2026

.THIS AFTERNOON...SW winds 5 to 10 kt. Seas 2 ft. Wave Detail: SE
2 ft at 8 seconds.
.TONIGHT...S winds 10 kt, becoming SW after midnight. Seas 2 ft.
Wave Detail: SE 2 ft at 9 seconds and SW 1 foot at 3 seconds.
.MON...NW winds 5 to 10 kt, becoming E in the afternoon. Seas
2 ft. Wave Detail: SE 2 ft at 9 seconds and SW 1 foot at
3 seconds.
.MON NIGHT...SE winds 5 kt, becoming E after midnight. Seas 2 ft.
Wave Detail: SE 2 ft at 9 seconds.
.TUE...NE winds 20 to 25 kt, increasing to 25 to 30 kt in the
afternoon. Seas 3 to 4 ft, building to 4 to 6 ft in the
afternoon. Wave Detail: E 4 ft at 9 seconds, becoming E 6 ft at
5 seconds. A chance of showers with a slight chance of tstms.
.TUE NIGHT...NE winds 25 to 30 kt, diminishing to 20 to 25 kt
after midnight. Seas 5 to 7 ft. Wave Detail: E 7 ft at 6 seconds.
.WED...NE winds 20 to 25 kt. Seas 5 to 7 ft.
.WED NIGHT...NE winds 25 to 30 kt. Seas 5 to 7 ft.
.THU...NE winds 20 to 25 kt. Seas 5 to 6 ft. A chance of showers
and tstms.
.THU NIGHT...NE winds 20 to 25 kt. Seas 4 to 6 ft. A chance of
showers and tstms.

Winds and seas higher in and near tstms.

$$

AMZ380-140800-
Waters from South Santee River SC to Edisto Beach SC extending
from 20 to 60 NM-
215 PM EDT Sun Sep 13 2026

.THIS AFTERNOON...SW winds 5 to 10 kt. Seas 3 ft. Wave Detail: SE
3 ft at 9 seconds and SW 1 foot at 4 seconds.
.TONIGHT...SW winds 10 kt. Seas 3 ft. Wave Detail: SE 3 ft at
9 seconds and SW 2 ft at 4 seconds.
.MON...NW winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: SE 3 ft
at 9 seconds and SW 2 ft at 4 seconds.
.MON NIGHT...S winds 5 kt, becoming NE 15 to 20 kt with gusts to
25 kt after midnight. Seas 2 to 3 ft, building to 3 to 4 ft after
midnight. Wave Detail: SE 2 ft at 9 seconds and SW 1 foot at
4 seconds, becoming E 4 ft at 9 seconds and SW 1 foot at
4 seconds. A chance of showers and tstms after midnight.
.TUE...NE winds 20 to 25 kt with gusts to 30 kt. Seas 4 to 6 ft,
building to 6 to 7 ft in the afternoon. Wave Detail: E 6 ft at
6 seconds, becoming NE 7 ft at 7 seconds. A slight chance of
showers and tstms in the morning, then a slight chance of showers
in the afternoon.
.TUE NIGHT...NE winds 20 to 25 kt, diminishing to 15 to 20 kt
after midnight. Seas 6 to 7 ft, subsiding to 5 to 6 ft after
midnight. Wave Detail: NE 7 ft at 7 seconds, becoming NE 6 ft at
7 seconds.
.WED...NE winds 20 to 25 kt. Seas 5 to 7 ft.
.WED NIGHT...NE winds 20 to 25 kt. Seas 5 to 7 ft.
.THU...NE winds 15 to 20 kt. Seas 5 to 6 ft. A chance of showers
with a slight chance of tstms.
.THU NIGHT...NE winds 15 to 20 kt. Seas 4 to 5 ft. A chance of
showers and tstms.

Winds and seas higher in and near tstms.

$$

AMZ382-140800-
Waters from Edisto Beach SC to Savannah GA extending from 20 to
60 NM-
215 PM EDT Sun Sep 13 2026

.THIS AFTERNOON...SW winds 5 to 10 kt. Seas 3 ft. Wave Detail: SE
3 ft at 9 seconds and SW 1 foot at 4 seconds.
.TONIGHT...SW winds 10 kt. Seas 3 ft. Wave Detail: SE 3 ft at
9 seconds and SW 1 foot at 4 seconds.
.MON...W winds 5 to 10 kt, becoming N in the afternoon. Seas 2 to
3 ft. Wave Detail: SW 2 ft at 3 seconds and SE 2 ft at 9 seconds.
.MON NIGHT...SE winds 5 kt, becoming NE 15 to 20 kt after
midnight. Seas 2 to 3 ft. Wave Detail: SE 2 ft at 9 seconds and
SW 1 foot at 3 seconds.
.TUE...NE winds 20 to 25 kt with gusts to 30 kt. Seas 4 to 5 ft,
building to 5 to 7 ft in the afternoon. Wave Detail: E 5 ft at
7 seconds, becoming E 7 ft at 7 seconds. A slight chance of tstms
in the morning. A chance of showers.
.TUE NIGHT...NE winds 20 to 25 kt with gusts to 30 kt. Seas 7 to
8 ft, subsiding to 6 to 7 ft after midnight. Wave Detail: NE 7 ft
at 7 seconds.
.WED...NE winds 20 to 25 kt. Seas 6 to 7 ft.
.WED NIGHT...NE winds 20 to 25 kt. Seas 6 to 7 ft.
.THU...NE winds 20 kt. Seas 5 to 6 ft. A chance of showers with a
slight chance of tstms.
.THU NIGHT...NE winds 15 to 20 kt. Seas 4 to 6 ft. A chance of
showers and tstms.

Winds and seas higher in and near tstms.

$$

AMZ384-140800-
Waters from Savannah GA to Altamaha Sound GA extending from 20 to
60 NM-
215 PM EDT Sun Sep 13 2026

.THIS AFTERNOON...SW winds 5 kt. Seas 2 to 3 ft. Wave Detail: SE
2 ft at 8 seconds and SW 1 foot at 3 seconds.
.TONIGHT...SW winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: SE
2 ft at 9 seconds and SW 1 foot at 3 seconds.
.MON...W winds 5 to 10 kt, becoming N in the afternoon. Seas 2 to
3 ft. Wave Detail: SE 2 ft at 9 seconds and SW 1 foot at
3 seconds.
.MON NIGHT...SE winds 5 kt, becoming NE after midnight. Seas
2 ft. Wave Detail: SE 2 ft at 9 seconds.
.TUE...NE winds 15 to 20 kt, increasing to 20 to 25 kt in the
afternoon. Seas 3 to 4 ft, building to 5 to 7 ft in the
afternoon. Wave Detail: E 4 ft at 9 seconds, becoming E 7 ft at
6 seconds. A chance of showers with a slight chance of tstms.
.TUE NIGHT...NE winds 20 to 25 kt with gusts to 30 kt. Seas 6 to
8 ft, subsiding to 6 to 7 ft after midnight. Wave Detail: NE 8 ft
at 7 seconds, becoming NE 7 ft at 8 seconds. A chance of showers
in the evening.
.WED...NE winds 20 to 25 kt. Seas 6 to 7 ft.
.WED NIGHT...NE winds 20 to 25 kt. Seas 6 to 8 ft.
.THU...NE winds 20 kt. Seas 6 ft. A chance of showers with a
slight chance of tstms.
.THU NIGHT...NE winds 15 to 20 kt. Seas 4 to 6 ft. A chance of
showers and tstms.

Winds and seas higher in and near tstms.

$$