440
FZUS52 KCHS 040550
CWFCHS

Coastal Waters Forecast
National Weather Service Charleston SC
1250 AM 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

AMZ300-041800-
1250 AM 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.

$$

AMZ330-041800-
Charleston Harbor-
1250 AM EST Thu Dec 4 2025

.REST OF TONIGHT...N winds 5 kt.
.THU...N winds 5 kt, becoming NW in the afternoon.
.THU NIGHT...NE winds 5 kt. A chance of showers in the evening,
then showers likely after midnight.
.FRI...N winds 5 to 10 kt. Showers.
.FRI NIGHT...N winds 5 kt. Showers.
.SAT...N winds 5 kt. Showers.
.SAT NIGHT...N winds 5 kt. Showers.
.SUN...NE winds 5 to 10 kt. Showers likely.
.SUN NIGHT...N winds 5 to 10 kt. A chance of showers.
.MON...N winds 10 to 15 kt. A 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.

$$

AMZ350-041800-
Waters from South Santee River to Edisto Beach SC out 20 NM-
1250 AM EST Thu Dec 4 2025

.REST OF TONIGHT...N winds 5 to 10 kt. Seas 2 to 3 ft. Wave
Detail: NE 2 ft at 5 seconds and SE 2 ft at 9 seconds.
.THU...N winds 5 to 10 kt, becoming NW in the afternoon. Seas
2 to 3 ft. Wave Detail: SE 3 ft at 11 seconds and NE 1 foot at
5 seconds.
.THU NIGHT...N winds 5 kt, becoming E after midnight. Seas 3 ft.
Wave Detail: SE 3 ft at 10 seconds. A chance of showers. Vsby
1 to 3 NM after midnight.
.FRI...N winds 10 kt. Seas 3 to 4 ft. Wave Detail: E 3 ft at
10 seconds and NE 2 ft at 3 seconds. Showers.
.FRI NIGHT...N winds 5 to 10 kt. Seas 3 to 4 ft. Wave Detail: S
3 ft at 6 seconds and E 3 ft at 10 seconds. Showers.
.SAT...N winds 5 to 10 kt. Seas 3 to 4 ft. Wave Detail: E 3 ft at
10 seconds and NE 2 ft at 5 seconds. Showers.
.SAT NIGHT...N winds 5 to 10 kt. Seas 2 to 3 ft. Showers.
.SUN...NE winds 10 to 15 kt. Seas 2 to 3 ft. Showers likely.
.SUN NIGHT...N winds 15 to 20 kt. Seas 4 to 5 ft. A chance of
showers.
.MON...N winds 20 to 25 kt. Seas 4 to 6 ft. A chance of showers.
.MON NIGHT...N winds 20 to 25 kt. Seas 5 to 7 ft.

$$

AMZ352-041800-
Waters from Edisto Beach SC to Savannah GA out 20 NM-
1250 AM EST Thu Dec 4 2025

.REST OF TONIGHT...N winds 5 to 10 kt. Seas 2 ft. Wave Detail: SE
2 ft at 8 seconds and NE 1 foot at 5 seconds.
.THU...N winds 5 kt, becoming NW in the afternoon. Seas 2 to
3 ft. Wave Detail: SE 2 ft at 10 seconds and NE 1 foot at
5 seconds. A slight chance of showers in the afternoon.
.THU NIGHT...NE 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 in
the evening, then showers likely after midnight with vsby 1 to
3 NM.
.FRI...N 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 E 3 ft
at 10 seconds and SE 2 ft at 5 seconds. Showers.
.FRI NIGHT...N winds 5 to 10 kt. Seas 3 to 4 ft, subsiding to
2 to 3 ft after midnight. Wave Detail: E 3 ft at 10 seconds and
SE 2 ft at 6 seconds, becoming S 2 ft at 6 seconds and E 2 ft at
10 seconds. Showers.
.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 4 seconds. Showers.
.SAT NIGHT...NE winds 5 to 10 kt. Seas 2 to 3 ft. Showers.
.SUN...NE winds 10 kt. Seas 2 to 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 3 to 4 ft. A chance of showers.
.MON NIGHT...N winds 15 to 20 kt. Seas 4 to 5 ft.

$$

AMZ354-041800-
Waters from Savannah GA to Altamaha Sound GA out 20 NM, including
Grays Reef National Marine Sanctuary-
1250 AM EST Thu Dec 4 2025

.REST OF TONIGHT...N winds 5 to 10 kt. Seas 2 ft. Wave Detail: SE
2 ft at 8 seconds and NE 1 foot at 4 seconds.
.THU...NE winds 5 to 10 kt, becoming NW in the afternoon. Seas
2 ft. Wave Detail: SE 2 ft at 8 seconds and NE 1 foot at
5 seconds. A chance of showers in the afternoon.
.THU NIGHT...NE 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. Vsby 1 to 3 NM, decreasing to 1 NM or less after
midnight.
.FRI...NE winds 10 kt, becoming N in the afternoon. Seas 2 to
3 ft. Wave Detail: E 3 ft at 10 seconds and E 2 ft at 5 seconds.
Showers.
.FRI NIGHT...N winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: E
3 ft at 10 seconds and SE 2 ft at 5 seconds. Showers.
.SAT...N winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: E 2 ft at
10 seconds and SE 1 foot at 5 seconds. Showers.
.SAT NIGHT...NE winds 5 to 10 kt. Seas 2 to 3 ft. Showers.
.SUN...NE winds 10 to 15 kt. Seas 2 to 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 3 to 4 ft. A chance of showers.
.MON NIGHT...N winds 15 to 20 kt. Seas 4 to 5 ft.

$$

AMZ374-041800-
Waters from Savannah GA to Altamaha Sound GA from 20 to 60 NM-
1250 AM EST Thu Dec 4 2025

.REST OF TONIGHT...NW winds 10 kt. Seas 2 to 3 ft. Wave Detail: N
2 ft at 5 seconds and E 2 ft at 8 seconds.
.THU...N winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: E 3 ft at
11 seconds and NE 2 ft at 6 seconds.
.THU NIGHT...NE 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. Vsby
1 to 3 NM.
.FRI...S winds 10 to 15 kt, becoming W in the afternoon. Seas
3 to 4 ft, building to 4 to 5 ft in the afternoon. Wave Detail: S
3 ft at 4 seconds and E 3 ft at 10 seconds, becoming S 4 ft at
5 seconds and E 3 ft at 10 seconds. A chance of showers in the
morning, then showers likely in the afternoon.
.FRI NIGHT...NW winds 10 kt. Seas 3 to 4 ft. Wave Detail: S 3 ft
at 5 seconds and E 3 ft at 10 seconds. Showers likely, mainly in
the evening.
.SAT...N winds 10 kt. Seas 2 to 3 ft. Wave Detail: E 3 ft at
10 seconds and S 1 foot at 4 seconds. Showers likely.
.SAT NIGHT...NE winds 10 kt. Seas 3 ft. Showers.
.SUN...NE winds 10 to 15 kt. Seas 3 to 4 ft. Showers.
.SUN NIGHT...N winds 15 to 20 kt. Seas 4 to 5 ft. A chance of
showers.
.MON...N winds 15 to 20 kt. Seas 4 to 6 ft. A chance of showers.
.MON NIGHT...N winds 15 to 20 kt. Seas 5 to 7 ft.

$$