435
FZUS52 KCHS 241336
CWFCHS

Coastal Waters Forecast
National Weather Service Charleston SC
936 AM EDT Sun Aug 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

AMZ300-250215-
936 AM EDT Sun Aug 24 2025

.Synopsis for the coastal waters of south coastal South Carolina
and north coastal Georgia...
Low pressure will pull away from the area today. A cold front
will clear the area Monday night with high pressure prevailing
through much of the week.

$$

AMZ330-250215-
Charleston Harbor-
936 AM EDT Sun Aug 24 2025

.TODAY...N winds 5 to 10 kt, becoming E late. A slight chance of
showers this morning.
.TONIGHT...SW winds 5 kt.
.MON...W winds 5 to 10 kt. A slight chance of showers and tstms
in the afternoon.
.MON NIGHT...SW winds 5 to 10 kt, becoming W after midnight. A
slight chance of showers and tstms in the evening.
.TUE...N winds 5 kt, becoming E in the afternoon.
.TUE NIGHT...NE winds 5 kt. A slight chance of showers and tstms
after midnight.
.WED...NE winds 10 kt. A slight chance of showers and tstms.
.WED NIGHT...NE winds 5 to 10 kt.
.THU...NE winds 5 to 10 kt. A slight chance of showers and tstms.
.THU NIGHT...NE winds 5 to 10 kt. A slight chance of showers.

Winds and waves higher in and near tstms.

Unless otherwise noted, waves 1 foot or less.

Charleston Harbor water temperature 83 degrees.

$$

AMZ350-250215-
Waters from South Santee River to Edisto Beach SC out 20 NM-
936 AM EDT Sun Aug 24 2025

.TODAY...N winds 15 kt with gusts to 20 kt, becoming NE 5 to 10
kt late. Seas 2 to 3 ft. Wave Detail: E 3 ft at 5 seconds and E 2
ft at 12 seconds. A chance of showers through early afternoon.
.TONIGHT...SW winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: E
2 ft at 6 seconds and E 2 ft at 13 seconds.
.MON...W winds 5 to 10 kt, becoming SW in the afternoon. Seas
2 to 3 ft. Wave Detail: E 2 ft at 6 seconds and E 2 ft at
12 seconds. A slight chance of showers and tstms.
.MON NIGHT...SW winds 10 kt, becoming W after midnight. Seas 2 to
3 ft. Wave Detail: S 2 ft at 5 seconds and E 2 ft at 12 seconds.
A slight chance of showers and tstms.
.TUE...N winds 5 to 10 kt, becoming NE in the afternoon. Seas
2 ft. Wave Detail: SW 2 ft at 4 seconds and E 2 ft at 12 seconds.
A slight chance of showers and tstms in the morning.
.TUE NIGHT...NE winds 5 to 10 kt. Seas 2 ft. Wave Detail: NE
1 foot at 3 seconds and SE 1 foot at 8 seconds. A slight chance
of tstms. A slight chance of showers in the evening, then a
chance of showers after midnight.
.WED...NE winds 10 to 15 kt. Seas 2 to 3 ft. A slight chance of
showers and tstms.
.WED NIGHT...NE winds 10 to 15 kt. Seas 2 to 3 ft. A slight
chance of showers.
.THU...NE winds 10 to 15 kt. Seas 2 to 3 ft. A chance of showers
with a slight chance of tstms.
.THU NIGHT...NE winds 10 to 15 kt. Seas 3 ft. A chance of showers
with a slight chance of tstms.

Winds and seas higher in and near tstms.

$$

AMZ352-250215-
Waters from Edisto Beach SC to Savannah GA out 20 NM-
936 AM EDT Sun Aug 24 2025

.TODAY...N winds 10 to 15 kt, diminishing to 5 to 10 kt early
this afternoon, then becoming E late. Seas 2 to 3 ft. Wave
Detail: E 3 ft at 7 seconds and E 1 foot at 13 seconds. A slight
chance of showers this morning.
.TONIGHT...SW winds 5 kt. Seas 2 to 3 ft. Wave Detail: E 2 ft at
7 seconds and E 2 ft at 14 seconds.
.MON...W winds 5 to 10 kt. Seas 2 ft. Wave Detail: E 2 ft at
6 seconds and E 2 ft at 13 seconds. A slight chance of showers
and tstms.
.MON NIGHT...SW winds 5 to 10 kt, becoming W after midnight. Seas
2 ft. Wave Detail: E 2 ft at 6 seconds and E 2 ft at 11 seconds.
A slight chance of showers and tstms.
.TUE...N winds 5 to 10 kt, becoming E in the afternoon. Seas
2 ft. Wave Detail: E 2 ft at 11 seconds and SW 1 foot at
3 seconds. A slight chance of showers in the morning.
.TUE NIGHT...E winds 5 kt, becoming N after midnight. Seas 2 ft.
Wave Detail: NE 1 foot at 3 seconds and S 1 foot at 3 seconds. A
slight chance of showers and tstms.
.WED...NE winds 10 to 15 kt. Seas 2 to 3 ft. A slight chance of
showers and tstms.
.WED NIGHT...NE winds 10 to 15 kt. Seas 2 to 3 ft. A slight
chance of showers and tstms.
.THU...NE winds 10 kt. Seas 2 to 3 ft. A chance of showers with a
slight chance of tstms.
.THU NIGHT...NE winds 10 to 15 kt. Seas 2 to 3 ft. A chance of
showers with a slight chance of tstms.

Winds and seas higher in and near tstms.

$$

AMZ354-250215-
Waters from Savannah GA to Altamaha Sound GA out 20 NM, including
Grays Reef National Marine Sanctuary-
936 AM EDT Sun Aug 24 2025

.TODAY...N winds 10 to 15 kt, becoming NE 5 to 10 kt late. Seas
2 to 3 ft. Wave Detail: NE 3 ft at 6 seconds and E 2 ft at
13 seconds. A slight chance of showers this morning. A slight
chance of showers and tstms this afternoon.
.TONIGHT...SW winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: E
2 ft at 7 seconds and E 2 ft at 13 seconds. A slight chance of
showers and tstms this evening.
.MON...W winds 5 to 10 kt, becoming SW in the afternoon. Seas
2 to 3 ft. Wave Detail: E 2 ft at 6 seconds and E 2 ft at
14 seconds. A slight chance of showers and tstms.
.MON NIGHT...SW winds 5 to 10 kt, becoming W after midnight. Seas
2 to 3 ft. Wave Detail: E 2 ft at 6 seconds and E 2 ft at
12 seconds. A slight chance of tstms in the evening. A slight
chance of showers.
.TUE...N winds 5 to 10 kt, becoming NE in the afternoon. Seas
2 ft. Wave Detail: E 2 ft at 12 seconds and SW 1 foot at
3 seconds. A slight chance of showers in the afternoon.
.TUE NIGHT...E winds 5 to 10 kt, becoming N after midnight. Seas
2 ft. Wave Detail: E 2 ft at 12 seconds and S 1 foot at
4 seconds. A slight chance of showers.
.WED...NE winds 10 to 15 kt. Seas 2 to 3 ft. A chance of showers
and tstms.
.WED NIGHT...E winds 10 to 15 kt. Seas 2 to 3 ft. A slight chance
of showers and tstms.
.THU...NE winds 15 kt. Seas 2 to 3 ft. A chance of showers and
tstms.
.THU NIGHT...NE winds 10 to 15 kt. Seas 2 to 3 ft. A chance of
showers with a slight chance of tstms.

Winds and seas higher in and near tstms.

$$

AMZ374-250215-
Waters from Savannah GA to Altamaha Sound GA from 20 to 60 NM-
936 AM EDT Sun Aug 24 2025

.TODAY...N winds 10 to 15 kt, diminishing to 5 to 10 kt late.
Seas 3 to 4 ft. Wave Detail: E 3 ft at 7 seconds and E 3 ft at
12 seconds. A chance of showers this afternoon. A slight chance
of tstms.
.TONIGHT...SW winds 5 to 10 kt. Seas 3 to 4 ft. Wave Detail: E
3 ft at 13 seconds and E 2 ft at 7 seconds. A chance of showers
with a slight chance of tstms.
.MON...W winds 5 to 10 kt. Seas 3 to 4 ft. Wave Detail: E 3 ft at
13 seconds and SE 1 foot at 8 seconds. A chance of showers. A
chance of tstms, mainly in the morning.
.MON NIGHT...SW winds 5 to 10 kt, becoming W after midnight. Seas
3 ft. Wave Detail: E 3 ft at 12 seconds and NE 2 ft at 6 seconds.
A slight chance of tstms. A slight chance of showers in the
evening, then a chance of showers after midnight.
.TUE...NW winds 5 to 10 kt, becoming N in the afternoon. Seas
2 to 3 ft. Wave Detail: E 3 ft at 12 seconds and W 1 foot at
3 seconds. A chance of showers, mainly in the morning.
.TUE NIGHT...NE winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: E
2 ft at 12 seconds and SW 1 foot at 3 seconds. A slight chance of
showers in the evening, then a chance of showers with a slight
chance of tstms after midnight.
.WED...NE winds 10 to 15 kt. Seas 2 to 3 ft. A chance of showers
with a slight chance of tstms.
.WED NIGHT...NE winds 10 to 15 kt. Seas 3 ft. A chance of showers
with a slight chance of tstms.
.THU...NE winds 10 to 15 kt. Seas 3 ft. A chance of showers and
tstms.
.THU NIGHT...NE winds 10 to 15 kt. Seas 3 ft. A chance of showers
with a slight chance of tstms.

Winds and seas higher in and near tstms.

$$