FZUS52 KCHS 150925
CWFCHS

Coastal Waters Forecast
National Weather Service Charleston SC
525 AM EDT Wed Apr 15 2026

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

AMZ300-152330-
525 AM EDT Wed Apr 15 2026

.Synopsis for the coastal waters of south coastal South Carolina
and north coastal Georgia...
Atlantic high pressure will prevail through the Saturday. A
strong cold front will push across the waters Sunday bringing
increasing winds and seas.

$$

AMZ330-152330-
Charleston Harbor-
525 AM EDT Wed Apr 15 2026

.TODAY...SW winds 5 to 10 kt, becoming S 15 kt with gusts to
20 kt this afternoon. Patchy fog early this morning.
.TONIGHT...S winds 10 to 15 kt with gusts to 20 kt, becoming SW
5 kt after midnight.
.THU...SW winds 5 to 10 kt.
.THU NIGHT...SW winds 10 kt.
.FRI...SW winds 5 to 10 kt.
.FRI NIGHT...SW winds 5 to 10 kt.
.SAT...SW winds 5 to 10 kt.
.SAT NIGHT...S winds 10 kt.
.SUN...SW winds 10 to 15 kt.
.SUN NIGHT...N winds 10 to 15 kt.

Unless otherwise noted, waves 1 foot or less.

Charleston Harbor water temperature 68 degrees.

$$

AMZ350-152330-
Waters from South Santee River to Edisto Beach SC out 20 NM-
525 AM EDT Wed Apr 15 2026

.TODAY...SW winds 5 to 10 kt, increasing to 10 to 15 kt this
afternoon. Seas 3 ft. Wave Detail: SE 3 ft at 9 seconds and S
2 ft at 3 seconds.
.TONIGHT...SW winds 10 to 15 kt. Seas 3 ft. Wave Detail: SE 3 ft
at 9 seconds and S 2 ft at 4 seconds.
.THU...SW winds 10 to 15 kt. Seas 3 ft. Wave Detail: E 3 ft at
9 seconds and S 2 ft at 4 seconds.
.THU NIGHT...SW winds 10 to 15 kt. Seas 3 ft. Wave Detail: S 3 ft
at 5 seconds and E 2 ft at 9 seconds.
.FRI...SW winds 10 to 15 kt. Seas 3 ft. Wave Detail: S 3 ft at
5 seconds and E 2 ft at 9 seconds.
.FRI NIGHT...SW winds 10 to 15 kt. Seas 3 ft. Wave Detail: S 2 ft
at 5 seconds and E 2 ft at 9 seconds.
.SAT...SW winds 10 to 15 kt. Seas 3 ft.
.SAT NIGHT...S winds 15 kt. Seas 3 to 4 ft.
.SUN...SW winds 15 to 20 kt. Seas 3 to 4 ft.
.SUN NIGHT...N winds 20 to 30 kt. Seas 4 to 5 ft. A slight chance
of showers.

$$

AMZ352-152330-
Waters from Edisto Beach SC to Savannah GA out 20 NM-
525 AM EDT Wed Apr 15 2026

.TODAY...SW winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: SE
3 ft at 9 seconds.
.TONIGHT...S winds 10 kt. Seas 3 ft. Wave Detail: SE 3 ft at
9 seconds and SW 1 foot at 4 seconds.
.THU...SW winds 10 to 15 kt. Seas 3 ft. Wave Detail: SE 3 ft at
9 seconds and SW 1 foot at 4 seconds.
.THU NIGHT...S winds 10 to 15 kt. Seas 3 ft. Wave Detail: S 3 ft
at 4 seconds and SE 3 ft at 9 seconds.
.FRI...SW winds 10 to 15 kt. Seas 3 ft. Wave Detail: S 3 ft at
5 seconds and SE 3 ft at 9 seconds.
.FRI NIGHT...S winds 10 to 15 kt. Seas 3 ft. Wave Detail: SE 3 ft
at 9 seconds and S 2 ft at 4 seconds.
.SAT...SW winds 10 to 15 kt. Seas 2 to 3 ft.
.SAT NIGHT...S winds 10 to 15 kt. Seas 3 to 4 ft.
.SUN...SW winds 15 to 20 kt. Seas 3 to 4 ft.
.SUN NIGHT...NW winds 20 to 30 kt. Seas 4 to 5 ft.


$$

AMZ354-152330-
Waters from Savannah GA to Altamaha Sound GA out 20 NM, including
Grays Reef National Marine Sanctuary-
525 AM EDT Wed Apr 15 2026

.TODAY...SW winds 5 to 10 kt, becoming S 10 to 15 kt late. Seas
2 to 3 ft. Wave Detail: E 3 ft at 9 seconds.
.TONIGHT...S winds 10 to 15 kt. Seas 3 ft. Wave Detail: SE 3 ft
at 9 seconds and S 1 foot at 3 seconds.
.THU...S winds 10 to 15 kt. Seas 3 ft. Wave Detail: SE 3 ft at
9 seconds and S 1 foot at 4 seconds.
.THU NIGHT...S winds 10 to 15 kt. Seas 3 to 4 ft. Wave Detail: S
3 ft at 4 seconds and E 3 ft at 9 seconds.
.FRI...SW winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: SE 3 ft
at 9 seconds and S 2 ft at 4 seconds.
.FRI NIGHT...S winds 10 to 15 kt. Seas 3 ft. Wave Detail: SE 3 ft
at 9 seconds.
.SAT...S winds 10 to 15 kt. Seas 2 to 3 ft.
.SAT NIGHT...S winds 10 to 15 kt. Seas 3 ft.
.SUN...SW winds 10 to 15 kt. Seas 2 to 3 ft.
.SUN NIGHT...NW winds 20 to 30 kt. Seas 4 to 5 ft.


$$

AMZ374-152330-
Waters from Savannah GA to Altamaha Sound GA from 20 to 60 NM-
525 AM EDT Wed Apr 15 2026

.TODAY...SW winds 5 to 10 kt. Seas 3 to 4 ft. Wave Detail: E 4 ft
at 9 seconds.
.TONIGHT...S winds 10 to 15 kt. Seas 3 to 4 ft. Wave Detail: SE
4 ft at 9 seconds.
.THU...SW winds 10 kt. Seas 3 to 4 ft. Wave Detail: SE 4 ft at
9 seconds.
.THU NIGHT...S winds 10 to 15 kt with gusts to 20 kt. Seas 3 to
4 ft. Wave Detail: S 3 ft at 4 seconds and SE 3 ft at 9 seconds.
.FRI...SW winds 10 to 15 kt with gusts to 20 kt, diminishing to
5 to 10 kt in the afternoon. Seas 3 to 4 ft. Wave Detail: S 3 ft
at 5 seconds and SE 3 ft at 9 seconds.
.FRI NIGHT...S winds 10 to 15 kt. Seas 3 to 4 ft. Wave Detail: SE
3 ft at 9 seconds and S 2 ft at 4 seconds.
.SAT...SW winds 5 to 10 kt. Seas 3 to 4 ft.
.SAT NIGHT...S winds 10 to 15 kt. Seas 3 to 4 ft.
.SUN...SW winds 15 kt. Seas 3 to 4 ft.
.SUN NIGHT...NW winds 25 to 30 kt with gusts to 35 kt. Seas 4 to
6 ft. A slight chance of showers.

$$