433
FZUS52 KCHS 041730
CWFCHS

Coastal Waters Forecast
National Weather Service Charleston SC
1230 PM EST Thu Dec 4 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

AMZ300-050600-
1230 PM EST Thu Dec 4 2025

.Synopsis for the coastal waters of south coastal South Carolina
and north coastal Georgia...
High pressure will prevail across the region before a frontal
system impacts the area Friday into the weekend. High pressure
will then return next week.

$$

AMZ330-050600-
Charleston Harbor-
1230 PM EST Thu Dec 4 2025

.THIS AFTERNOON...NW winds 5 kt. A slight chance of showers late.
.TONIGHT...NE winds 5 kt. A chance of showers in the evening,
then showers likely after midnight.
.FRI...N winds 5 to 10 kt. Showers. Vsby 1 to 3 NM in the
afternoon.
.FRI NIGHT...N winds 5 kt. Showers.
.SAT...N winds 5 kt. Showers.
.SAT NIGHT...N winds 5 kt. Showers, mainly in the evening.
.SUN...NE winds 5 to 10 kt. A chance of showers.
.SUN NIGHT...N winds 5 to 10 kt. A chance of showers.
.MON...N winds 10 to 15 kt. A slight chance of showers.
.MON NIGHT...N winds 10 to 15 kt.

Unless otherwise noted, waves 1 foot or less.

Charleston Harbor water temperature 58 degrees.

$$

AMZ350-050600-
Waters from South Santee River to Edisto Beach SC out 20 NM-
1230 PM EST Thu Dec 4 2025

.THIS AFTERNOON...NW winds 5 kt. Seas 2 to 3 ft. Wave Detail: SE
3 ft at 11 seconds and NE 1 foot at 4 seconds. A slight chance of
showers late.
.TONIGHT...NE winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: SE
3 ft at 10 seconds. A chance of showers.
.FRI...NE winds 5 to 10 kt. Seas 3 to 4 ft. Wave Detail: SE 3 ft
at 6 seconds and E 3 ft at 10 seconds. Showers. Vsby 1 to 3 NM,
decreasing to 1 NM or less in the afternoon.
.FRI NIGHT...N winds 5 to 10 kt. Seas 3 to 4 ft. Wave Detail: S
3 ft at 7 seconds and E 3 ft at 10 seconds. Showers.
.SAT...N winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: E 3 ft at
10 seconds and S 2 ft at 5 seconds. Showers.
.SAT NIGHT...N winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: E
3 ft at 10 seconds and S 1 foot at 4 seconds. Showers, mainly in
the evening.
.SUN...NE winds 10 kt. Seas 2 to 3 ft. Showers likely.
.SUN NIGHT...N winds 15 to 20 kt. Seas 3 to 4 ft. A chance of
showers with a slight chance of tstms.
.MON...N winds 20 to 25 kt. Seas 4 to 6 ft. A chance of showers.
.MON NIGHT...NE winds 20 to 25 kt. Seas 4 to 6 ft.

Winds and seas higher in and near tstms.

$$

AMZ352-050600-
Waters from Edisto Beach SC to Savannah GA out 20 NM-
1230 PM EST Thu Dec 4 2025

.THIS AFTERNOON...NW winds 5 kt. Seas 2 to 3 ft. Wave Detail: SE
2 ft at 11 seconds and NE 1 foot at 5 seconds. A slight chance of
showers.
.TONIGHT...E winds 5 kt. Seas 2 to 3 ft. Wave Detail: E 3 ft at
10 seconds and NE 1 foot at 5 seconds. A chance of showers.
.FRI...NE winds 10 kt. Seas 2 to 3 ft, building to 3 to 4 ft in
the afternoon. Wave Detail: E 3 ft at 10 seconds, becoming SE
3 ft at 5 seconds and E 3 ft at 10 seconds. Showers. Vsby 1 to
3 NM, decreasing to 1 NM or less in the afternoon.
.FRI NIGHT...N winds 5 to 10 kt. Seas 3 to 4 ft, subsiding to
2 to 3 ft after midnight. Wave Detail: S 3 ft at 6 seconds and E
3 ft at 10 seconds, becoming S 2 ft at 5 seconds and E 2 ft at
10 seconds. Showers likely, mainly in the evening.
.SAT...N winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: E 2 ft at
10 seconds and NE 1 foot at 5 seconds. Showers.
.SAT NIGHT...N winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: E
2 ft at 10 seconds and S 1 foot at 4 seconds. Showers.
.SUN...NE winds 10 kt. Seas 2 to 3 ft. Showers likely.
.SUN NIGHT...N winds 10 to 15 kt. Seas 2 to 3 ft. A chance of
showers.
.MON...N winds 15 to 20 kt. Seas 3 to 4 ft. A chance of showers.
.MON NIGHT...NE winds 15 to 20 kt. Seas 4 to 5 ft.

$$

AMZ354-050600-
Waters from Savannah GA to Altamaha Sound GA out 20 NM, including
Grays Reef National Marine Sanctuary-
1230 PM EST Thu Dec 4 2025

.THIS AFTERNOON...N winds 5 to 10 kt. Seas 2 ft. Wave Detail: E
2 ft at 11 seconds and NE 1 foot at 5 seconds. A slight chance of
showers early, then a chance of showers late.
.TONIGHT...E winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: E
2 ft at 11 seconds and NE 1 foot at 5 seconds. A chance of
showers.
.FRI...NE winds 10 kt, becoming NW in the afternoon. Seas 2 to
3 ft. Wave Detail: E 2 ft at 5 seconds and E 2 ft at 10 seconds.
A chance of showers in the morning, then showers likely in the
afternoon with vsby 1 to 3 NM.
.FRI NIGHT...N winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: SE
2 ft at 5 seconds and E 2 ft at 10 seconds. Showers likely,
mainly in the evening.
.SAT...N winds 5 to 10 kt. Seas 2 ft. Wave Detail: E 2 ft at
10 seconds and S 1 foot at 4 seconds. A chance of showers in the
morning, then showers in the afternoon.
.SAT NIGHT...NE winds 5 to 10 kt. Seas 2 ft. Wave Detail: E 2 ft
at 10 seconds and S 1 foot at 4 seconds. Showers.
.SUN...NE winds 10 kt. Seas 2 to 3 ft. Showers likely.
.SUN NIGHT...N winds 10 to 15 kt. Seas 2 to 3 ft. A chance of
showers.
.MON...N winds 15 to 20 kt. Seas 3 to 4 ft. A slight chance of
showers.
.MON NIGHT...NE winds 15 to 20 kt. Seas 4 to 5 ft.

$$

AMZ374-050600-
Waters from Savannah GA to Altamaha Sound GA from 20 to 60 NM-
1230 PM EST Thu Dec 4 2025

.THIS AFTERNOON...N winds 5 to 10 kt. Seas 2 to 3 ft. Wave
Detail: E 3 ft at 11 seconds and NE 2 ft at 5 seconds. A slight
chance of showers late.
.TONIGHT...E winds 5 to 10 kt. Seas 3 ft. Wave Detail: E 3 ft at
10 seconds and NE 2 ft at 5 seconds. A chance of showers.
.FRI...SW winds 15 to 20 kt, becoming W in the afternoon. Seas
4 to 5 ft. Wave Detail: S 4 ft at 5 seconds and E 3 ft at
10 seconds. A chance of showers.
.FRI NIGHT...N winds 10 to 15 kt, diminishing to 5 to 10 kt after
midnight. Seas 3 to 4 ft. Wave Detail: SW 3 ft at 5 seconds and E
3 ft at 10 seconds. Showers likely, mainly in the evening.
.SAT...N winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: E 3 ft at
10 seconds and S 1 foot at 4 seconds. A chance of showers in the
morning, then showers in the afternoon.
.SAT NIGHT...NE winds 10 kt. Seas 3 ft. Wave Detail: E 3 ft at
10 seconds and NE 2 ft at 3 seconds. Showers.
.SUN...NE winds 10 kt. Seas 3 ft. Showers.
.SUN NIGHT...N winds 10 to 15 kt. Seas 3 to 4 ft. A chance of
showers.
.MON...N winds 15 to 20 kt. Seas 4 to 6 ft. A chance of showers.
.MON NIGHT...NE winds 15 to 20 kt. Seas 5 to 6 ft.

$$