507
FZUS52 KCHS 211739
CWFCHS

Coastal Waters Forecast
National Weather Service Charleston SC
1239 PM EST Fri Nov 21 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

AMZ300-220600-
1239 PM EST Fri Nov 21 2025

.Synopsis for the coastal waters of south coastal South Carolina
and north coastal Georgia...
A cold front will dive across the area Saturday night, followed
by the return of high pressure early next week. Rain chances then
return late Wednesday into Thursday as another cold front takes
aim at the region.

$$

AMZ330-220600-
Charleston Harbor-
1239 PM EST Fri Nov 21 2025

.THIS AFTERNOON...SW winds 5 to 10 kt.
.TONIGHT...SW winds 5 to 10 kt.
.SAT...SW winds 10 kt.
.SAT NIGHT...W winds 5 to 10 kt.
.SUN...N winds 5 to 10 kt.
.SUN NIGHT...NE winds 5 kt.
.MON...NE winds 10 kt.
.MON NIGHT...E winds 5 to 10 kt.
.TUE...SE winds 5 to 10 kt. A slight chance of showers.
.TUE NIGHT...S winds 5 kt. A slight chance of showers.

Unless otherwise noted, waves 1 foot or less.

Charleston Harbor water temperature 63 degrees.

$$

AMZ350-220600-
Waters from South Santee River to Edisto Beach SC out 20 NM-
1239 PM EST Fri Nov 21 2025

.THIS AFTERNOON...SW winds 5 to 10 kt. Seas 2 ft. Wave Detail: E
2 ft at 5 seconds.
.TONIGHT...SW winds 5 to 10 kt, increasing to 10 to 15 kt with
gusts to 20 kt after midnight. Seas 2 ft. Wave Detail: SW 2 ft at
4 seconds and E 1 foot at 5 seconds.
.SAT...SW winds 10 to 15 kt with gusts to 20 kt. Seas 2 to 3 ft.
Wave Detail: SW 3 ft at 5 seconds and E 1 foot at 4 seconds.
.SAT NIGHT...SW winds 10 to 15 kt, becoming W after midnight.
Seas 2 to 3 ft. Wave Detail: SW 3 ft at 5 seconds and E 1 foot at
7 seconds.
.SUN...N winds 10 to 15 kt. Seas 2 ft. Wave Detail: NE 2 ft at
3 seconds and W 2 ft at 5 seconds.
.SUN NIGHT...NE winds 10 to 15 kt. Seas 2 ft. Wave Detail: NE
2 ft at 4 seconds and SW 1 foot at 5 seconds.
.MON...NE winds 10 to 15 kt. Seas 2 to 3 ft.
.MON NIGHT...E winds 10 to 15 kt. Seas 3 ft.
.TUE...SE winds 10 kt. Seas 3 ft. A slight chance of showers.
.TUE NIGHT...S winds 5 to 10 kt. Seas 3 ft. A slight chance of
showers and tstms.

Winds and seas higher in and near tstms.

$$

AMZ352-220600-
Waters from Edisto Beach SC to Savannah GA out 20 NM-
1239 PM EST Fri Nov 21 2025

.THIS AFTERNOON...SW winds 5 to 10 kt. Seas 2 ft. Wave Detail: S
1 foot at 2 seconds and E 1 foot at 5 seconds.
.TONIGHT...S winds 5 to 10 kt, becoming SW 10 to 15 kt after
midnight. Seas 2 ft. Wave Detail: SW 2 ft at 3 seconds and E
1 foot at 5 seconds.
.SAT...SW winds 10 to 15 kt. Seas 2 to 3 ft. Wave Detail: SW 2 ft
at 4 seconds and E 1 foot at 5 seconds.
.SAT NIGHT...SW winds 10 kt, becoming W after midnight. Seas
2 ft. Wave Detail: SW 2 ft at 4 seconds and E 1 foot at
7 seconds.
.SUN...NW winds 10 kt, becoming NE in the afternoon. Seas 2 ft.
Wave Detail: NW 2 ft at 4 seconds and E 1 foot at 7 seconds.
.SUN NIGHT...NE winds 5 to 10 kt. Seas 2 ft. Wave Detail: NE 2 ft
at 3 seconds and S 1 foot at 4 seconds.
.MON...NE winds 10 to 15 kt. Seas 2 to 3 ft.
.MON NIGHT...E winds 10 to 15 kt. Seas 2 to 3 ft.
.TUE...SE winds 5 to 10 kt. Seas 2 to 3 ft. A slight chance of
showers.
.TUE NIGHT...S winds 5 to 10 kt. Seas 2 to 3 ft.

$$

AMZ354-220600-
Waters from Savannah GA to Altamaha Sound GA out 20 NM, including
Grays Reef National Marine Sanctuary-
1239 PM EST Fri Nov 21 2025

.THIS AFTERNOON...S winds 5 to 10 kt. Seas 2 ft. Wave Detail: S
1 foot at 2 seconds and E 1 foot at 6 seconds.
.TONIGHT...SW winds 10 to 15 kt. Seas 2 ft. Wave Detail: S 2 ft
at 3 seconds and E 1 foot at 5 seconds.
.SAT...SW winds 10 to 15 kt. Seas 2 ft. Wave Detail: SW 2 ft at
4 seconds and E 1 foot at 5 seconds.
.SAT NIGHT...W winds 10 kt. Seas 2 ft. Wave Detail: SW 2 ft at
4 seconds and NE 1 foot at 5 seconds.
.SUN...NW winds 10 kt, becoming NE in the afternoon. Seas 2 ft.
Wave Detail: W 1 foot at 4 seconds and E 1 foot at 7 seconds.
.SUN NIGHT...NE winds 10 to 15 kt. Seas 2 ft. Wave Detail: NE
2 ft at 3 seconds and S 1 foot at 3 seconds.
.MON...NE winds 10 to 15 kt. Seas 2 to 3 ft.
.MON NIGHT...E winds 10 to 15 kt. Seas 2 to 3 ft.
.TUE...SE winds 5 to 10 kt. Seas 2 to 3 ft.
.TUE NIGHT...S winds 5 to 10 kt. Seas 3 ft.

$$

AMZ374-220600-
Waters from Savannah GA to Altamaha Sound GA from 20 to 60 NM-
1239 PM EST Fri Nov 21 2025

.THIS AFTERNOON...SW winds 5 to 10 kt. Seas 2 ft. Wave Detail: E
2 ft at 7 seconds and SW 1 foot at 2 seconds.
.TONIGHT...S winds 5 to 10 kt, becoming SW 10 to 15 kt with gusts
to 20 kt after midnight. Seas 2 to 3 ft. Wave Detail: SW 2 ft at
4 seconds and E 2 ft at 7 seconds.
.SAT...SW winds 10 to 15 kt. Seas 2 to 3 ft. Wave Detail: SW 3 ft
at 4 seconds and E 1 foot at 7 seconds.
.SAT NIGHT...W winds 10 to 15 kt with gusts to 20 kt. Seas 2 to
3 ft. Wave Detail: SW 2 ft at 4 seconds and E 1 foot at
7 seconds.
.SUN...NW winds 10 to 15 kt, becoming N in the afternoon. Seas
2 to 3 ft. Wave Detail: NW 2 ft at 4 seconds and E 1 foot at
7 seconds.
.SUN NIGHT...NE winds 10 to 15 kt. Seas 2 to 3 ft. Wave Detail:
NE 3 ft at 4 seconds and SW 1 foot at 4 seconds.
.MON...NE winds 15 kt. Seas 2 to 3 ft.
.MON NIGHT...E winds 10 to 15 kt. Seas 3 to 4 ft. A slight chance
of showers.
.TUE...S winds 5 to 10 kt. Seas 3 to 4 ft. A slight chance of
showers.
.TUE NIGHT...S winds 5 to 10 kt. Seas 3 to 4 ft.

$$