556
FZUS52 KCHS 130934
CWFCHS

Coastal Waters Forecast
National Weather Service Charleston SC
534 AM EDT Sun Apr 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

AMZ300-132215-
534 AM EDT Sun Apr 13 2025

.Synopsis for the coastal waters of south coastal South Carolina
and north coastal Georgia...
High pressure will prevail into Monday, followed by a dry cold
front Tuesday. High pressure will then return through the
remainder of the week.

$$

AMZ330-132215-
Charleston Harbor-
534 AM EDT Sun Apr 13 2025

.TODAY...N winds 5 to 10 kt, becoming NW this afternoon.
.TONIGHT...SW winds 5 to 10 kt.
.MON...SW winds 10 to 15 kt.
.MON NIGHT...SW winds 15 kt with gusts to 20 kt.
.TUE...W winds 15 kt with gusts to 20 kt.
.TUE NIGHT...NW winds 10 to 15 kt.
.WED...NW winds 10 kt.
.WED NIGHT...W winds 5 to 10 kt.
.THU...E winds 5 to 10 kt.
.THU NIGHT...S winds 10 kt.

Unless otherwise noted, waves 1 foot or less.

Charleston Harbor water temperature 68 degrees.

$$

AMZ350-132215-
Waters from South Santee River to Edisto Beach SC out 20 NM-
534 AM EDT Sun Apr 13 2025

.TODAY...N winds 10 to 15 kt with gusts to 20 kt, diminishing to
5 to 10 kt early this afternoon, then becoming W late. Seas 2 to
3 ft. Wave Detail: NE 3 ft at 6 seconds.
.TONIGHT...SW winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: E
2 ft at 7 seconds and SW 1 foot at 2 seconds.
.MON...SW winds 10 to 15 kt, increasing to 15 to 20 kt in the
afternoon. Seas 2 to 3 ft, building to 3 to 4 ft in the
afternoon. Wave Detail: SW 2 ft at 3 seconds and E 2 ft at
8 seconds, becoming SW 4 ft at 4 seconds and E 2 ft at 8 seconds.
.MON NIGHT...SW winds 15 to 20 kt with gusts to 25 kt. Seas 4 to
5 ft. Wave Detail: SW 4 ft at 5 seconds and E 2 ft at 8 seconds.
.TUE...SW winds 15 to 20 kt with gusts to 25 kt. Seas 4 to 5 ft.
Wave Detail: SW 5 ft at 6 seconds and E 1 foot at 8 seconds.
.TUE NIGHT...NW winds 15 to 20 kt with gusts to 25 kt. Seas 3 to
4 ft, subsiding to 2 to 3 ft after midnight. Wave Detail: SW 4 ft
at 6 seconds and SE 1 foot at 8 seconds, becoming NW 3 ft at
5 seconds and SE 1 foot at 8 seconds.
.WED...NW winds 10 to 15 kt. Seas 2 to 3 ft.
.WED NIGHT...W winds 5 to 10 kt. Seas 2 ft.
.THU...NE winds 5 to 10 kt. Seas 2 to 3 ft.
.THU NIGHT...S winds 5 to 10 kt. Seas 2 ft.

$$

AMZ352-132215-
Waters from Edisto Beach SC to Savannah GA out 20 NM-
534 AM EDT Sun Apr 13 2025

.TODAY...NE winds 10 to 15 kt with gusts to 20 kt, becoming N 5
to 10 kt early this afternoon, then becoming S late. Seas 2 to 3
ft. Wave Detail: NE 3 ft at 6 seconds.
.TONIGHT...SW winds 5 to 10 kt. Seas 2 ft. Wave Detail: E 2 ft at
7 seconds.
.MON...SW winds 10 to 15 kt. Seas 2 to 3 ft. Wave Detail: SW 3 ft
at 4 seconds and E 2 ft at 7 seconds.
.MON NIGHT...SW winds 15 to 20 kt. Seas 3 to 4 ft. Wave Detail: S
3 ft at 4 seconds and E 2 ft at 8 seconds.
.TUE...W winds 15 to 20 kt. Seas 3 to 4 ft. Wave Detail: SW 4 ft
at 5 seconds and E 1 foot at 8 seconds.
.TUE NIGHT...NW winds 15 to 20 kt. Seas 2 to 3 ft. Wave Detail: W
3 ft at 5 seconds and SE 1 foot at 8 seconds.
.WED...NW winds 10 to 15 kt. Seas 2 to 3 ft.
.WED NIGHT...SW winds 5 to 10 kt. Seas 2 ft.
.THU...NE winds 5 to 10 kt. Seas 2 ft.
.THU NIGHT...SE winds 5 to 10 kt. Seas 2 ft.

$$

AMZ354-132215-
Waters from Savannah GA to Altamaha Sound GA out 20 NM, including
Grays Reef National Marine Sanctuary-
534 AM EDT Sun Apr 13 2025

.TODAY...NE winds 10 to 15 kt with gusts to 20 kt, diminishing to
N 5 to 10 kt early this afternoon, then becoming SE late. Seas 2
to 3 ft. Wave Detail: NE 3 ft at 7 seconds.
.TONIGHT...S winds 5 to 10 kt. Seas 2 ft. Wave Detail: NE 2 ft at
7 seconds and SW 1 foot at 2 seconds.
.MON...SW winds 10 to 15 kt. Seas 2 to 3 ft. Wave Detail: S 2 ft
at 3 seconds and E 2 ft at 7 seconds.
.MON NIGHT...SW winds 15 kt with gusts to 20 kt. Seas 2 to 3 ft.
Wave Detail: S 3 ft at 4 seconds and E 2 ft at 8 seconds.
.TUE...W winds 15 kt with gusts to 20 kt. Seas 2 to 3 ft. Wave
Detail: SW 3 ft at 4 seconds and E 1 foot at 8 seconds.
.TUE NIGHT...NW winds 15 to 20 kt. Seas 2 to 3 ft. Wave Detail:
NW 3 ft at 3 seconds and E 1 foot at 8 seconds.
.WED...N winds 10 to 15 kt. Seas 2 to 3 ft.
.WED NIGHT...SW winds 5 to 10 kt. Seas 2 ft.
.THU...NE winds 5 to 10 kt. Seas 2 ft.
.THU NIGHT...SE winds 5 to 10 kt. Seas 2 ft.

$$

AMZ374-132215-
Waters from Savannah GA to Altamaha Sound GA from 20 to 60 NM-
534 AM EDT Sun Apr 13 2025

.TODAY...NE winds 10 to 15 kt with gusts to 20 kt, becoming N 5
to 10 kt. Seas 3 ft. Wave Detail: NE 3 ft at 7 seconds.
.TONIGHT...S winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: NE
3 ft at 7 seconds.
.MON...SW winds 10 to 15 kt. Seas 2 to 3 ft. Wave Detail: NE 3 ft
at 7 seconds and SW 2 ft at 3 seconds.
.MON NIGHT...SW winds 15 to 20 kt with gusts to 25 kt. Seas 3 to
4 ft. Wave Detail: SW 4 ft at 5 seconds and E 2 ft at 8 seconds.
.TUE...SW winds 15 to 20 kt. Seas 3 to 4 ft. Wave Detail: W 4 ft
at 5 seconds and E 2 ft at 8 seconds.
.TUE NIGHT...NW winds 15 to 20 kt with gusts to 25 kt. Seas 3 to
4 ft. Wave Detail: NW 4 ft at 4 seconds and SE 1 foot at
8 seconds.
.WED...N winds 15 to 20 kt. Seas 3 to 4 ft.
.WED NIGHT...SW winds 5 kt. Seas 2 ft.
.THU...NE winds 5 kt. Seas 2 ft.
.THU NIGHT...SE winds 5 to 10 kt. Seas 2 ft.

$$