501
FZUS52 KCHS 071805
CWFCHS

Coastal Waters Forecast
National Weather Service Charleston SC
205 PM EDT Tue Oct 7 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

AMZ300-080715-
205 PM EDT Tue Oct 7 2025

.Synopsis for the coastal waters of south coastal South Carolina
and north coastal Georgia...
High pressure will persist into Wednesday. A cold front will drop
south through the area Wednesday night into Thursday with inland
high pressure prevailing into early next week. Low pressure will
develop off the Southeast U.S. coast this weekend.

$$

AMZ330-080715-
Charleston Harbor-
205 PM EDT Tue Oct 7 2025

.THIS AFTERNOON...E winds 10 kt.
.TONIGHT...E winds 5 to 10 kt, diminishing to 5 kt after
midnight.
.WED...Variable winds 5 kt. Patchy fog in the morning.
.WED NIGHT...SE winds 5 kt, becoming NE 10 to 15 kt with gusts to
20 kt after midnight. A chance of showers and tstms.
.THU...NE winds 15 to 20 kt, increasing to 20 to 25 kt in the
afternoon. Waves 1 to 2 ft, building to 2 to 3 ft. A slight
chance of tstms in the morning. A chance of showers.
.THU NIGHT...NE winds 20 to 25 kt with gusts to 30 kt. Waves 2 to
3 ft. A slight chance of showers and tstms.
.FRI...NE winds 20 to 25 kt. Waves 2 to 3 ft. A chance of showers
and tstms.
.FRI NIGHT...NE winds 20 to 25 kt. Waves 2 to 3 ft. A chance of
showers with a slight chance of tstms.
.SAT...N winds 20 to 25 kt. Waves 2 to 3 ft. A chance of showers.
.SAT NIGHT...N winds 20 kt. Waves 1 to 2 ft. 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 76 degrees.

$$

AMZ350-080715-
Waters from South Santee River to Edisto Beach SC out 20 NM-
205 PM EDT Tue Oct 7 2025

.THIS AFTERNOON...E winds 10 kt. Seas 4 to 5 ft. Wave Detail: SE
5 ft at 8 seconds.
.TONIGHT...SE winds 5 to 10 kt. Seas 4 to 5 ft. Wave Detail: SE
5 ft at 8 seconds.
.WED...NE winds 5 kt. Seas 3 to 4 ft. Wave Detail: SE 4 ft at
8 seconds.
.WED NIGHT...E winds 5 to 10 kt, becoming NE 20 to 25 kt after
midnight. Seas 3 to 4 ft. Wave Detail: SE 4 ft at 8 seconds. A
chance of showers. A slight chance of tstms in the evening, then
a chance of tstms after midnight.
.THU...NE winds 25 to 30 kt with gusts to 35 kt. Seas 5 to 7 ft,
building to 7 to 9 ft in the afternoon. Wave Detail: NE 7 ft at 7
seconds, becoming NE 8 ft at 7 seconds. A chance of showers. A
chance of tstms, mainly in the morning.
.THU NIGHT...NE winds 30 kt with gusts to 40 kt. Seas 8 to 10 ft.
Wave Detail: E 10 ft at 9 seconds. A chance of showers. A slight
chance of tstms in the evening, then a chance of tstms after
midnight.
.FRI...NE winds 30 kt with gusts to 40 kt. Seas 8 to 10 ft. A
chance of showers and tstms.
.FRI NIGHT...NE winds 30 kt with gusts to 40 kt. Seas 8 to 10 ft.
A chance of showers and tstms.
.SAT...N winds 25 to 30 kt with gusts to 35 kt. Seas 8 to 10 ft.
A chance of showers.
.SAT NIGHT...N winds 25 to 30 kt. Seas 8 to 10 ft. A slight
chance of showers.

Winds and seas higher in and near tstms.

$$

AMZ352-080715-
Waters from Edisto Beach SC to Savannah GA out 20 NM-
205 PM EDT Tue Oct 7 2025

.THIS AFTERNOON...E winds 10 kt. Seas 4 to 5 ft. Wave Detail: SE
5 ft at 8 seconds.
.TONIGHT...E winds 5 to 10 kt. Seas 4 to 5 ft, subsiding to 3 to
4 ft after midnight. Wave Detail: SE 5 ft at 8 seconds, becoming
SE 4 ft at 8 seconds.
.WED...NE winds 5 kt. Seas 3 to 4 ft. Wave Detail: SE 4 ft at
8 seconds.
.WED NIGHT...E winds 5 kt, becoming NE 15 to 20 kt with gusts to
25 kt after midnight. Seas 3 to 4 ft. Wave Detail: SE 4 ft at
8 seconds. A slight chance of showers and tstms in the evening,
then a chance of showers and tstms after midnight.
.THU...NE winds 25 to 30 kt with gusts to 35 kt. Seas 4 to 6 ft,
building to 6 to 8 ft in the afternoon. Wave Detail: NE 6 ft at 8
seconds, becoming NE 8 ft at 7 seconds. A chance of showers. A
chance of tstms, mainly in the morning.
.THU NIGHT...NE winds 25 to 30 kt with gusts to 40 kt. Seas 7 to
9 ft, building to 8 to 10 ft after midnight. Wave Detail: E 9 ft
at 8 seconds, becoming E 10 ft at 8 seconds. A chance of showers.
A slight chance of tstms in the evening, then a chance of tstms
after midnight.
.FRI...NE winds 25 to 30 kt with gusts to 40 kt. Seas 8 to 10 ft.
A chance of showers and tstms.
.FRI NIGHT...NE winds 30 kt with gusts to 40 kt. Seas 8 to 10 ft.
A chance of showers and tstms.
.SAT...N winds 25 to 30 kt with gusts to 35 kt. Seas 7 to 9 ft. A
slight chance of showers.
.SAT NIGHT...N winds 25 to 30 kt. Seas 7 to 9 ft. A slight chance
of showers.

Winds and seas higher in and near tstms.

$$

AMZ354-080715-
Waters from Savannah GA to Altamaha Sound GA out 20 NM, including
Grays Reef National Marine Sanctuary-
205 PM EDT Tue Oct 7 2025

.THIS AFTERNOON...E winds 10 kt. Seas 4 to 5 ft. Wave Detail: E
5 ft at 8 seconds and E 1 foot at 13 seconds.
.TONIGHT...E winds 5 to 10 kt. Seas 4 to 5 ft, subsiding to 3 to
4 ft after midnight. Wave Detail: E 5 ft at 8 seconds and E
1 foot at 12 seconds, becoming E 4 ft at 8 seconds.
.WED...NE winds 5 to 10 kt. Seas 3 to 4 ft. Wave Detail: E 4 ft
at 8 seconds.
.WED NIGHT...E winds 5 to 10 kt, becoming NE 10 to 15 kt with
gusts to 20 kt after midnight. Seas 3 to 4 ft. Wave Detail: E
4 ft at 8 seconds. A slight chance of showers. A slight chance of
tstms after midnight.
.THU...NE winds 25 to 30 kt with gusts to 35 kt. Seas 4 to 6 ft,
building to 6 to 8 ft in the afternoon. Wave Detail: NE 6 ft at 8
seconds, becoming NE 8 ft at 6 seconds. A chance of showers and
tstms.
.THU NIGHT...NE winds 30 kt with gusts to 40 kt. Seas 7 to 9 ft.
Wave Detail: E 9 ft at 8 seconds. A chance of showers and tstms.
.FRI...NE winds 30 kt with gusts to 40 kt. Seas 8 to 10 ft. A
chance of showers and tstms.
.FRI NIGHT...NE winds 30 kt with gusts to 40 kt. Seas 8 to 10 ft.
A chance of showers and tstms.
.SAT...N winds 25 to 30 kt with gusts to 35 kt. Seas 7 to 9 ft. A
slight chance of showers.
.SAT NIGHT...N winds 25 to 30 kt. Seas 7 to 9 ft.

Winds and seas higher in and near tstms.

$$

AMZ374-080715-
Waters from Savannah GA to Altamaha Sound GA from 20 to 60 NM-
205 PM EDT Tue Oct 7 2025

...SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE TONIGHT...

.THIS AFTERNOON...E winds 10 to 15 kt. Seas 5 to 7 ft. Wave
Detail: E 6 ft at 8 seconds and E 2 ft at 12 seconds.
.TONIGHT...E winds 10 to 15 kt, becoming SE 5 to 10 kt after
midnight. Seas 5 to 6 ft. Wave Detail: E 6 ft at 8 seconds and E
1 foot at 12 seconds.
.WED...NE winds 5 to 10 kt. Seas 4 to 5 ft. Wave Detail: E 5 ft
at 8 seconds.
.WED NIGHT...NE winds 5 to 10 kt, increasing to 10 to 15 kt with
gusts to 20 kt after midnight. Seas 4 ft. Wave Detail: E 4 ft at
8 seconds. A chance of showers with a slight chance of tstms
after midnight.
.THU...NE winds 25 to 30 kt with gusts to 40 kt. Seas 5 to 7 ft,
building to 8 to 10 ft in the afternoon. Wave Detail: NE 7 ft at
8 seconds, becoming NE 10 ft at 7 seconds. A chance of showers
and tstms.
.THU NIGHT...NE winds 30 kt with gusts to 40 kt. Seas 9 to 11 ft,
building to 10 to 11 ft after midnight. Wave Detail: NE 11 ft at
8 seconds, becoming NE 11 ft at 9 seconds. Showers likely with a
chance of tstms.
.FRI...NE winds 30 kt with gusts to 40 kt. Seas 10 to 12 ft.
Showers likely with a chance of tstms.
.FRI NIGHT...NE winds 30 kt with gusts to 40 kt. Seas 10 to 13
ft. Showers likely with a chance of tstms.
.SAT...N winds 30 kt with gusts to 40 kt. Seas 10 to 13 ft. A
chance of showers.
.SAT NIGHT...N winds 25 to 30 kt. Seas 9 to 13 ft. A slight
chance of showers.

Winds and seas higher in and near tstms.

$$