125
FZUS52 KCHS 241917
CWFCHS

Coastal Waters Forecast
National Weather Service Charleston SC
317 PM EDT Sat May 24 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

AMZ300-250815-
317 PM EDT Sat May 24 2025

.Synopsis for the coastal waters of south coastal South Carolina
and north coastal Georgia...
Expect an active weather pattern to begin tomorrow through the
upcoming week as a frontal boundary lingers in the vicinity and a
series of upper disturbances move through the region.

$$

AMZ330-250815-
Charleston Harbor-
317 PM EDT Sat May 24 2025

.TONIGHT...SE winds 5 to 10 kt. A slight chance of showers late.
.SUN...SE winds 5 kt, increasing to 10 kt in the afternoon. A
chance of tstms. A chance of showers.
.SUN NIGHT...S winds 10 kt. A chance of tstms. A chance of
showers.
.MON...W winds 10 kt, becoming N in the afternoon. A chance of
tstms. A chance of showers.
.MON NIGHT...NE winds 10 kt. A chance of tstms. A chance of
showers.
.TUE...E winds 10 to 15 kt. Showers likely with a slight chance
of tstms.
.TUE NIGHT...SE winds 5 to 10 kt. Showers likely with a chance of
tstms.
.WED...S winds 5 to 10 kt. Showers likely with a chance of tstms.
.WED NIGHT...S winds 5 to 10 kt. A chance of showers and tstms.
.THU...SW winds 5 to 10 kt. A chance of showers and tstms.
.THU NIGHT...SW winds 5 to 10 kt. A chance of showers and tstms.

Winds and waves higher in and near tstms.

Unless otherwise noted, waves 1 foot or less.

Charleston Harbor water temperature 78 degrees.

$$

AMZ350-250815-
Waters from South Santee River to Edisto Beach SC out 20 NM-
317 PM EDT Sat May 24 2025

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

Winds and seas higher in and near tstms.

$$

AMZ352-250815-
Waters from Edisto Beach SC to Savannah GA out 20 NM-
317 PM EDT Sat May 24 2025

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

Winds and seas higher in and near tstms.

$$

AMZ354-250815-
Waters from Savannah GA to Altamaha Sound GA out 20 NM, including
Grays Reef National Marine Sanctuary-
317 PM EDT Sat May 24 2025

.TONIGHT...SE winds 10 kt, becoming S after midnight. Seas 2 to
3 ft. Wave Detail: E 2 ft at 4 seconds and E 1 foot at 9 seconds.
.SUN...S winds 5 to 10 kt, increasing to 10 to 15 kt in the
afternoon. Seas 2 ft. Wave Detail: S 2 ft at 4 seconds and NE
1 foot at 4 seconds. A slight chance of showers and tstms.
.SUN NIGHT...S winds 15 kt. Seas 2 to 3 ft. Wave Detail: S 2 ft
at 4 seconds and E 2 ft at 7 seconds. A chance of tstms. A chance
of showers.
.MON...SW winds 10 to 15 kt, becoming S in the afternoon. Seas
2 to 3 ft. Wave Detail: SE 2 ft at 6 seconds. A chance of showers
in the morning, then a chance of showers and tstms in the
afternoon.
.MON NIGHT...E winds 10 kt. Seas 2 to 3 ft. Wave Detail: E 2 ft
at 6 seconds and E 1 foot at 9 seconds. A chance of tstms.
Showers likely.
.TUE...E winds 10 kt. Seas 2 to 3 ft. Wave Detail: E 2 ft at
5 seconds and E 2 ft at 9 seconds. Showers likely with a slight
chance of tstms.
.TUE NIGHT...SE winds 10 kt, becoming S after midnight. Seas 2 to
3 ft. Showers likely with a chance of tstms.
.WED...S winds 10 kt. Seas 2 to 3 ft. A chance of showers and
tstms.
.WED NIGHT...S winds 10 kt. Seas 2 to 3 ft. A chance of showers
and tstms.
.THU...SW winds 5 to 10 kt. Seas 2 to 3 ft. A chance of showers
with a slight chance of tstms.
.THU NIGHT...SW winds 10 kt. Seas 2 to 3 ft. A chance of showers
and tstms.

Winds and seas higher in and near tstms.

$$

AMZ374-250815-
Waters from Savannah GA to Altamaha Sound GA from 20 to 60 NM-
317 PM EDT Sat May 24 2025

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

Winds and seas higher in and near tstms.

$$