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FZUS52 KCHS 222235
CWFCHS

Coastal Waters Forecast
National Weather Service Charleston SC
635 PM EDT Thu May 22 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

AMZ300-231115-
635 PM EDT Thu May 22 2025

.Synopsis for the coastal waters of south coastal South Carolina
and north coastal Georgia...
A weak cold front will push offshore tonight, followed by
building high pressure through Saturday. A warm front will then
lift north through the area Sunday, bringing daily rain chances
back to the forecast as we head into the new week.

$$

AMZ330-231115-
Charleston Harbor-
635 PM EDT Thu May 22 2025

.TONIGHT...W winds 10 to 15 kt with gusts to 20 kt, diminishing
to 5 to 10 kt late this evening, then becoming NW late.
.FRI...N winds 5 kt, becoming SW in the afternoon.
.FRI NIGHT...SW winds 5 to 10 kt, becoming NW after midnight.
.SAT...N winds 5 to 10 kt, becoming E in the afternoon.
.SAT NIGHT...SE winds 5 to 10 kt.
.SUN...SE winds 5 kt, becoming S in the afternoon. A chance of
showers. A chance of tstms in the afternoon.
.SUN NIGHT...S winds 10 kt. A chance of showers and tstms.
.MON...S winds 10 kt. A chance of showers with a slight chance of
tstms.
.MON NIGHT...SE winds 10 kt. A chance of showers and tstms.
.TUE...S winds 10 kt. A chance of showers with a slight chance of
tstms.
.TUE NIGHT...SW winds 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.

$$

AMZ350-231115-
Waters from South Santee River to Edisto Beach SC out 20 NM-
635 PM EDT Thu May 22 2025

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

Winds and seas higher in and near tstms.

$$

AMZ352-231115-
Waters from Edisto Beach SC to Savannah GA out 20 NM-
635 PM EDT Thu May 22 2025

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

Winds and seas higher in and near tstms.

$$

AMZ354-231115-
Waters from Savannah GA to Altamaha Sound GA out 20 NM, including
Grays Reef National Marine Sanctuary-
635 PM EDT Thu May 22 2025

.TONIGHT...SW winds 10 to 15 kt, becoming NW late. Seas 2 to
3 ft. Wave Detail: S 2 ft at 4 seconds and SE 1 foot at
8 seconds.
.FRI...N winds 5 to 10 kt, becoming E in the afternoon. Seas
2 ft. Wave Detail: SW 2 ft at 4 seconds and E 1 foot at
9 seconds.
.FRI NIGHT...S winds 10 kt, becoming SW after midnight. Seas
2 ft. Wave Detail: SE 1 foot at 3 seconds and E 1 foot at
9 seconds.
.SAT...N winds 10 kt, becoming E in the afternoon. Seas 2 ft.
Wave Detail: S 2 ft at 3 seconds and E 2 ft at 9 seconds.
.SAT NIGHT...SE winds 10 kt. Seas 2 ft. Wave Detail: E 2 ft at
7 seconds and SE 1 foot at 4 seconds. A slight chance of showers
after midnight.
.SUN...S winds 10 to 15 kt. Seas 2 ft. Wave Detail: S 2 ft at
4 seconds and SE 2 ft at 7 seconds. A slight chance of showers. A
slight chance of tstms in the afternoon.
.SUN NIGHT...S winds 10 to 15 kt. Seas 2 to 3 ft. A slight chance
of showers and tstms.
.MON...S winds 10 to 15 kt. Seas 2 to 3 ft. A chance of showers.
.MON NIGHT...S winds 10 to 15 kt. Seas 2 to 3 ft. A chance of
showers and tstms.
.TUE...S winds 10 to 15 kt. Seas 2 to 3 ft. A chance of showers
with a slight chance of tstms.
.TUE NIGHT...S winds 10 kt. Seas 2 to 3 ft. Showers likely with a
slight chance of tstms.

Winds and seas higher in and near tstms.

$$

AMZ374-231115-
Waters from Savannah GA to Altamaha Sound GA from 20 to 60 NM-
635 PM EDT Thu May 22 2025

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

Winds and seas higher in and near tstms.

$$