946
FZUS52 KCHS 130546
CWFCHS

Coastal Waters Forecast
National Weather Service Charleston SC
146 AM EDT Mon Oct 13 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

AMZ300-131815-
146 AM EDT Mon Oct 13 2025

.Synopsis for the coastal waters of south coastal South Carolina
and north coastal Georgia...
High pressure will extend into the area today and linger into
much of the week.

$$

AMZ330-131815-
Charleston Harbor-
146 AM EDT Mon Oct 13 2025

.REST OF TONIGHT...NW winds 15 kt with gusts to 20 kt. A chance
of showers.
.MON...N winds 10 to 15 kt.
.MON NIGHT...NW winds 5 to 10 kt.
.TUE...N winds 10 kt.
.TUE NIGHT...N winds 10 kt.
.WED...N winds 10 kt.
.WED NIGHT...N winds 5 to 10 kt.
.THU...NE winds 10 kt.
.THU NIGHT...NE winds 5 to 10 kt.
.FRI...NE winds 5 to 10 kt.
.FRI NIGHT...E winds 5 kt.

Unless otherwise noted, waves 1 foot or less.

Charleston Harbor water temperature 71 degrees.

$$

AMZ350-131815-
Waters from South Santee River to Edisto Beach SC out 20 NM-
146 AM EDT Mon Oct 13 2025

...SMALL CRAFT ADVISORY IN EFFECT THROUGH THIS AFTERNOON...

.REST OF TONIGHT...NW winds 20 kt with gusts to 25 kt. Seas 4 to
6 ft. Wave Detail: E 5 ft at 11 seconds and NW 4 ft at 4 seconds.
A slight chance of tstms. A chance of showers.
.MON...N winds 15 to 20 kt. Seas 4 to 6 ft. Wave Detail: E 5 ft
at 11 seconds and NW 4 ft at 4 seconds.
.MON NIGHT...NW winds 10 to 15 kt. Seas 4 to 5 ft, subsiding to
3 to 4 ft after midnight. Wave Detail: NE 5 ft at 10 seconds and
W 2 ft at 3 seconds, becoming E 4 ft at 9 seconds and W 1 foot at
3 seconds.
.TUE...N winds 10 to 15 kt. Seas 3 to 4 ft. Wave Detail: NE 4 ft
at 9 seconds and W 1 foot at 3 seconds.
.TUE NIGHT...N winds 15 to 20 kt. Seas 3 to 4 ft, building to
4 to 5 ft after midnight. Wave Detail: NE 4 ft at 8 seconds,
becoming NE 5 ft at 6 seconds.
.WED...N winds 15 to 20 kt, diminishing to 10 to 15 kt in the
afternoon. Seas 4 to 5 ft. Wave Detail: NE 5 ft at 8 seconds.
.WED NIGHT...N winds 10 to 15 kt. Seas 4 to 5 ft.
.THU...NE winds 15 kt. Seas 4 to 5 ft.
.THU NIGHT...NE winds 10 to 15 kt. Seas 4 to 5 ft.
.FRI...NE winds 10 to 15 kt. Seas 3 to 4 ft.
.FRI NIGHT...E winds 5 to 10 kt. Seas 3 to 4 ft.

Winds and seas higher in and near tstms.

$$

AMZ352-131815-
Waters from Edisto Beach SC to Savannah GA out 20 NM-
146 AM EDT Mon Oct 13 2025

.REST OF TONIGHT...NW winds 15 to 20 kt. Seas 4 to 5 ft. Wave
Detail: NW 4 ft at 4 seconds and E 4 ft at 12 seconds. A chance
of showers, then a slight chance of showers late.
.MON...N winds 15 to 20 kt, becoming NW 10 to 15 kt in the
afternoon. Seas 4 to 5 ft, subsiding to 3 to 4 ft in the
afternoon. Wave Detail: NW 4 ft at 4 seconds and E 4 ft at
12 seconds, becoming E 4 ft at 11 seconds and NW 3 ft at
3 seconds.
.MON NIGHT...NW winds 5 to 10 kt. Seas 3 to 4 ft. Wave Detail: NE
4 ft at 10 seconds and NW 1 foot at 3 seconds.
.TUE...N winds 10 to 15 kt. Seas 3 to 4 ft. Wave Detail: E 3 ft
at 10 seconds.
.TUE NIGHT...N winds 10 to 15 kt with gusts to 20 kt. Seas 3 to
4 ft. Wave Detail: NE 4 ft at 8 seconds.
.WED...NE winds 10 to 15 kt with gusts to 20 kt. Seas 3 to 4 ft.
Wave Detail: NE 4 ft at 7 seconds.
.WED NIGHT...NE winds 10 kt. Seas 3 to 4 ft.
.THU...NE winds 10 to 15 kt. Seas 3 to 4 ft.
.THU NIGHT...NE winds 10 to 15 kt. Seas 3 to 4 ft.
.FRI...NE winds 10 to 15 kt. Seas 3 to 4 ft.
.FRI NIGHT...E winds 5 to 10 kt. Seas 3 to 4 ft.

$$

AMZ354-131815-
Waters from Savannah GA to Altamaha Sound GA out 20 NM, including
Grays Reef National Marine Sanctuary-
146 AM EDT Mon Oct 13 2025

.REST OF TONIGHT...NW winds 15 kt with gusts to 20 kt. Seas 4 to
5 ft. Wave Detail: E 5 ft at 12 seconds. A slight chance of
showers.
.MON...N winds 10 to 15 kt. Seas 4 to 5 ft, subsiding to 3 to
4 ft in the afternoon. Wave Detail: E 5 ft at 12 seconds,
becoming NE 4 ft at 10 seconds.
.MON NIGHT...N winds 5 to 10 kt. Seas 3 to 4 ft, subsiding to
2 to 3 ft after midnight. Wave Detail: NE 4 ft at 11 seconds,
becoming E 3 ft at 11 seconds.
.TUE...N winds 10 kt. Seas 2 to 3 ft. Wave Detail: E 3 ft at
10 seconds.
.TUE NIGHT...NE winds 10 to 15 kt. Seas 3 to 4 ft. Wave Detail:
NE 4 ft at 9 seconds.
.WED...NE winds 15 to 20 kt, diminishing to 10 to 15 kt in the
afternoon. Seas 3 to 4 ft. Wave Detail: NE 4 ft at 6 seconds.
.WED NIGHT...NE winds 10 kt. Seas 3 to 4 ft.
.THU...NE winds 10 to 15 kt. Seas 4 to 5 ft.
.THU NIGHT...NE winds 10 to 15 kt. Seas 4 to 5 ft.
.FRI...NE winds 10 to 15 kt. Seas 3 to 4 ft.
.FRI NIGHT...E winds 5 to 10 kt. Seas 3 to 4 ft.

$$

AMZ374-131815-
Waters from Savannah GA to Altamaha Sound GA from 20 to 60 NM-
146 AM EDT Mon Oct 13 2025

...SMALL CRAFT ADVISORY IN EFFECT THROUGH THIS EVENING...

.REST OF TONIGHT...NW winds 15 to 20 kt with gusts to 25 kt. Seas
5 to 7 ft. Wave Detail: E 6 ft at 11 seconds and NW 5 ft at
5 seconds. A chance of showers with a slight chance of tstms,
then a slight chance of showers late.
.MON...NW winds 15 to 20 kt, diminishing to 10 to 15 kt in the
afternoon. Seas 5 to 7 ft, subsiding to 4 to 6 ft in the
afternoon. Wave Detail: E 5 ft at 11 seconds and NW 4 ft at
5 seconds, becoming NE 6 ft at 11 seconds.
.MON NIGHT...N winds 10 to 15 kt. Seas 4 to 5 ft. Wave Detail: NE
5 ft at 9 seconds.
.TUE...N winds 10 to 15 kt. Seas 4 to 5 ft. Wave Detail: NE 5 ft
at 10 seconds.
.TUE NIGHT...N winds 10 to 15 kt, becoming NE 15 to 20 kt after
midnight. Seas 4 to 5 ft, building to 4 to 6 ft after midnight.
Wave Detail: NE 5 ft at 9 seconds.
.WED...NE winds 15 to 20 kt with gusts to 25 kt. Seas 4 to 6 ft,
building to 5 to 6 ft in the afternoon. Wave Detail: NE 6 ft at
8 seconds.
.WED NIGHT...NE winds 10 to 15 kt with gusts to 20 kt. Seas 4 to
6 ft.
.THU...NE winds 15 to 20 kt. Seas 5 to 7 ft.
.THU NIGHT...NE winds 15 kt. Seas 5 to 6 ft.
.FRI...NE winds 10 to 15 kt. Seas 4 to 6 ft.
.FRI NIGHT...E winds 5 to 10 kt. Seas 4 to 5 ft.

Winds and seas higher in and near tstms.

$$