930
FZUS52 KCHS 261909
CWFCHS

Coastal Waters Forecast
National Weather Service Charleston SC
309 PM EDT Sat Apr 26 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

AMZ300-270815-
309 PM EDT Sat Apr 26 2025

.Synopsis for the coastal waters of south coastal South Carolina
and north coastal Georgia...
A cold front will move through tonight, followed by high pressure
through much of next week. Another cold front could approach the
region late in the week.

$$

AMZ330-270815-
Charleston Harbor-
309 PM EDT Sat Apr 26 2025

.TONIGHT...SW winds 10 to 15 kt with gusts to 20 kt, diminishing
to 5 to 10 kt late this evening. A chance of showers and tstms
early this evening.
.SUN...N winds 5 to 10 kt, becoming E 10 to 15 kt in the
afternoon.
.SUN NIGHT...E winds 10 kt.
.MON...E winds 10 kt.
.MON NIGHT...E winds 5 to 10 kt.
.TUE...SE winds 5 to 10 kt.
.TUE NIGHT...S winds 5 to 10 kt.
.WED...SW winds 5 to 10 kt.
.WED NIGHT...S winds 10 kt.
.THU...SW winds 10 kt.
.THU NIGHT...S winds 10 kt.

Winds and waves higher in and near tstms.

Unless otherwise noted, waves 1 foot or less.

Charleston Harbor water temperature 75 degrees.

$$

AMZ350-270815-
Waters from South Santee River to Edisto Beach SC out 20 NM-
309 PM EDT Sat Apr 26 2025

.TONIGHT...SW winds 10 to 15 kt. Seas 2 to 3 ft. Wave Detail: SE
3 ft at 9 seconds and S 2 ft at 4 seconds. A slight chance of
showers and tstms early this evening. A slight chance of showers
and tstms late.
.SUN...N winds 10 to 15 kt, becoming NE in the afternoon. Seas
3 to 4 ft. Wave Detail: NE 3 ft at 4 seconds and SE 3 ft at
9 seconds.
.SUN NIGHT...E winds 10 to 15 kt. Seas 3 to 4 ft. Wave Detail: E
3 ft at 5 seconds and SE 3 ft at 8 seconds.
.MON...E winds 10 to 15 kt. Seas 3 to 4 ft. Wave Detail: E 3 ft
at 8 seconds.
.MON NIGHT...E winds 5 to 10 kt. Seas 3 to 4 ft. Wave Detail: E
3 ft at 8 seconds.
.TUE...SE winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: E 3 ft
at 8 seconds.
.TUE NIGHT...S winds 5 to 10 kt. Seas 2 to 3 ft.
.WED...SW winds 10 kt. Seas 2 to 3 ft.
.WED NIGHT...SW winds 10 to 15 kt. Seas 2 to 3 ft.
.THU...SW winds 10 to 15 kt. Seas 2 to 3 ft.
.THU NIGHT...S winds 10 to 15 kt. Seas 3 to 4 ft.

Winds and seas higher in and near tstms.

$$

AMZ352-270815-
Waters from Edisto Beach SC to Savannah GA out 20 NM-
309 PM EDT Sat Apr 26 2025

.TONIGHT...SW winds 10 to 15 kt with gusts to 20 kt, diminishing
to 5 to 10 kt late. Seas 2 to 3 ft. Wave Detail: S 3 ft at
4 seconds and SE 3 ft at 9 seconds. A slight chance of showers
and tstms early this evening.
.SUN...N winds 10 to 15 kt, becoming NE with gusts to 20 kt in
the afternoon. Seas 2 to 3 ft, building to 3 to 4 ft in the
afternoon. Wave Detail: SE 3 ft at 9 seconds and SW 1 foot at
4 seconds, becoming SE 3 ft at 9 seconds and NE 2 ft at
3 seconds.
.SUN NIGHT...E winds 10 to 15 kt. Seas 3 to 4 ft. Wave Detail: SE
3 ft at 8 seconds and E 2 ft at 5 seconds.
.MON...E winds 10 to 15 kt. Seas 3 to 4 ft. Wave Detail: E 3 ft
at 8 seconds.
.MON NIGHT...E winds 5 to 10 kt. Seas 3 to 4 ft. Wave Detail: E
3 ft at 8 seconds.
.TUE...SE winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: E 3 ft
at 8 seconds.
.TUE NIGHT...S winds 5 to 10 kt. Seas 2 to 3 ft.
.WED...S winds 5 to 10 kt. Seas 2 to 3 ft.
.WED NIGHT...S winds 10 kt. Seas 2 to 3 ft.
.THU...S winds 10 kt. Seas 2 to 3 ft.
.THU NIGHT...S winds 10 to 15 kt. Seas 3 to 4 ft.

Winds and seas higher in and near tstms.

$$

AMZ354-270815-
Waters from Savannah GA to Altamaha Sound GA out 20 NM, including
Grays Reef National Marine Sanctuary-
309 PM EDT Sat Apr 26 2025

.TONIGHT...S winds 10 to 15 kt with gusts to 20 kt, becoming SW
late. Seas 2 to 3 ft. Wave Detail: S 3 ft at 4 seconds and E 3 ft
at 9 seconds. A slight chance of showers and tstms early this
evening.
.SUN...NW winds 5 to 10 kt, becoming NE 15 to 20 kt in the
afternoon. Seas 2 to 3 ft, building to 3 to 4 ft in the
afternoon. Wave Detail: SE 3 ft at 9 seconds and S 2 ft at
4 seconds, becoming SE 3 ft at 9 seconds and E 2 ft at 3 seconds.
.SUN NIGHT...E winds 10 to 15 kt. Seas 3 to 4 ft. Wave Detail: E
2 ft at 4 seconds and SE 2 ft at 9 seconds. A slight chance of
showers after midnight.
.MON...E winds 10 to 15 kt. Seas 3 to 4 ft. Wave Detail: E 3 ft
at 5 seconds and E 3 ft at 8 seconds. A slight chance of showers
and tstms.
.MON NIGHT...E winds 10 to 15 kt. Seas 3 to 4 ft. Wave Detail: E
3 ft at 5 seconds and E 3 ft at 8 seconds.
.TUE...SE winds 5 to 10 kt. Seas 3 to 4 ft. Wave Detail: E 3 ft
at 8 seconds.
.TUE NIGHT...SE winds 10 kt. Seas 2 to 3 ft.
.WED...S winds 5 to 10 kt. Seas 2 to 3 ft.
.WED NIGHT...S winds 10 to 15 kt. Seas 2 to 3 ft.
.THU...S winds 10 to 15 kt. Seas 2 to 3 ft.
.THU NIGHT...S winds 15 kt. Seas 3 to 4 ft.

Winds and seas higher in and near tstms.

$$

AMZ374-270815-
Waters from Savannah GA to Altamaha Sound GA from 20 to 60 NM-
309 PM EDT Sat Apr 26 2025

.TONIGHT...S winds 10 to 15 kt with gusts to 20 kt, becoming SW
late. Seas 3 to 4 ft. Wave Detail: SE 3 ft at 9 seconds and E
1 foot at 14 seconds. A slight chance of showers and tstms early
this evening.
.SUN...W winds 5 to 10 kt, becoming NE 10 to 15 kt with gusts to
20 kt in the afternoon. Seas 3 to 4 ft. Wave Detail: SE 3 ft at
9 seconds and NE 2 ft at 4 seconds.
.SUN NIGHT...E winds 15 kt. Seas 3 to 4 ft. Wave Detail: NE 3 ft
at 5 seconds and SE 3 ft at 9 seconds. A chance of showers with a
slight chance of tstms after midnight.
.MON...E winds 10 to 15 kt. Seas 4 to 5 ft. Wave Detail: NE 3 ft
at 5 seconds and E 2 ft at 9 seconds. A chance of showers with a
slight chance of tstms in the morning, then a slight chance of
showers in the afternoon.
.MON NIGHT...E winds 10 to 15 kt. Seas 4 to 5 ft. Wave Detail: E
4 ft at 7 seconds.
.TUE...E winds 5 to 10 kt. Seas 3 to 4 ft. Wave Detail: E 4 ft at
8 seconds.
.TUE NIGHT...SE winds 5 to 10 kt. Seas 3 to 4 ft.
.WED...S winds 5 to 10 kt. Seas 3 ft.
.WED NIGHT...S winds 10 kt. Seas 3 ft.
.THU...S winds 10 kt. Seas 3 ft.
.THU NIGHT...S winds 10 to 15 kt. Seas 3 to 4 ft.

Winds and seas higher in and near tstms.

$$