148
FZUS52 KCHS 062355
CWFCHS

Coastal Waters Forecast
National Weather Service Charleston SC
655 PM EST Sat Dec 6 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

AMZ300-071200-
655 PM EST Sat Dec 6 2025

.Synopsis for the coastal waters of south coastal South Carolina
and north coastal Georgia...
A frontal system will maintain unsettled weather through early
next week, then cold high pressure will build in. A reinforcing
cold front will move through late next week.

$$

AMZ330-071200-
Charleston Harbor-
655 PM EST Sat Dec 6 2025

.TONIGHT...W winds 5 kt, becoming N after midnight. A chance of
showers early this evening, then a slight chance of showers late
this evening.
.SUN...N winds 5 kt. A slight chance of showers in the morning,
then a chance of showers in the afternoon.
.SUN NIGHT...N winds 5 kt. A chance of showers.
.MON...N winds 10 to 15 kt. A chance of showers.
.MON NIGHT...N winds 10 to 15 kt with gusts to 20 kt.
.TUE...N winds 5 to 10 kt.
.TUE NIGHT...N winds 5 kt.
.WED...W winds 5 to 10 kt.
.WED NIGHT...W winds 10 kt.
.THU...W winds 10 kt.
.THU NIGHT...SW winds 5 to 10 kt. A slight chance of showers.

Unless otherwise noted, waves 1 foot or less.

Charleston Harbor water temperature 58 degrees.

$$

AMZ350-071200-
Waters from South Santee River to Edisto Beach SC out 20 NM-
655 PM EST Sat Dec 6 2025

.TONIGHT...NW winds 5 to 10 kt, becoming N after midnight. Seas
2 to 3 ft. Wave Detail: E 2 ft at 10 seconds and NE 1 foot at
4 seconds. A chance of showers early this evening, then a slight
chance of showers late this evening.
.SUN...NE winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: E 2 ft
at 9 seconds and S 1 foot at 5 seconds. A slight chance of
showers in the morning, then a chance of showers in the
afternoon.
.SUN NIGHT...N winds 5 to 10 kt, increasing to 10 to 15 kt after
midnight. Seas 2 to 3 ft. Wave Detail: NE 2 ft at 3 seconds and E
2 ft at 9 seconds. A chance of showers.
.MON...N winds 10 to 15 kt, increasing to 15 to 20 kt in the
afternoon. Seas 2 to 3 ft, building to 3 to 4 ft in the
afternoon. Wave Detail: NE 2 ft at 4 seconds and SE 2 ft at
9 seconds, becoming NE 3 ft at 5 seconds and SE 2 ft at
9 seconds. A chance of showers.
.MON NIGHT...N winds 15 to 20 kt with gusts to 25 kt. Seas 4 to
6 ft. Wave Detail: NE 6 ft at 7 seconds. A slight chance of
showers in the evening.
.TUE...N winds 15 to 20 kt, diminishing to 5 to 10 kt in the
afternoon. Seas 4 to 6 ft, subsiding to 4 to 5 ft in the
afternoon. Wave Detail: E 6 ft at 9 seconds, becoming E 5 ft at
9 seconds.
.TUE NIGHT...N winds 5 kt. Seas 3 to 4 ft.
.WED...W winds 10 to 15 kt. Seas 3 to 4 ft.
.WED NIGHT...W winds 15 to 20 kt. Seas 3 to 4 ft.
.THU...W winds 10 to 15 kt. Seas 3 to 4 ft.
.THU NIGHT...SW winds 10 to 15 kt. Seas 3 to 4 ft. A slight
chance of showers.

$$

AMZ352-071200-
Waters from Edisto Beach SC to Savannah GA out 20 NM-
655 PM EST Sat Dec 6 2025

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

$$

AMZ354-071200-
Waters from Savannah GA to Altamaha Sound GA out 20 NM, including
Grays Reef National Marine Sanctuary-
655 PM EST Sat Dec 6 2025

.TONIGHT...N winds 5 to 10 kt. Seas 2 ft. Wave Detail: E 2 ft at
10 seconds. Showers likely early this evening, then a chance of
showers late this evening.
.SUN...NE winds 5 to 10 kt. Seas 2 ft. Wave Detail: E 2 ft at
10 seconds. A chance of showers in the morning, then showers
likely in the afternoon.
.SUN NIGHT...N winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: E
2 ft at 10 seconds and NE 1 foot at 3 seconds. A chance of
showers. Vsby 1 to 3 NM after midnight.
.MON...N winds 10 to 15 kt. Seas 2 to 3 ft. Wave Detail: NE 2 ft
at 3 seconds and E 2 ft at 9 seconds. A chance of showers.
.MON NIGHT...N winds 15 to 20 kt. Seas 3 to 4 ft. Wave Detail: NE
4 ft at 4 seconds and E 2 ft at 9 seconds.
.TUE...NE winds 15 to 20 kt, becoming N 10 to 15 kt in the
afternoon. Seas 3 to 4 ft. Wave Detail: NE 4 ft at 6 seconds and
E 4 ft at 9 seconds.
.TUE NIGHT...N winds 5 to 10 kt. Seas 3 to 4 ft.
.WED...W winds 5 to 10 kt. Seas 3 to 4 ft.
.WED NIGHT...W winds 10 to 15 kt. Seas 3 ft.
.THU...SW winds 10 kt. Seas 3 ft.
.THU NIGHT...SW winds 10 to 15 kt. Seas 2 to 3 ft. A slight
chance of showers.

$$

AMZ374-071200-
Waters from Savannah GA to Altamaha Sound GA from 20 to 60 NM-
655 PM EST Sat Dec 6 2025

.TONIGHT...NW winds 10 to 15 kt, becoming N 5 to 10 kt late this
evening. Seas 3 to 4 ft, subsiding to 2 to 3 ft after midnight.
Wave Detail: NW 2 ft at 3 seconds and E 2 ft at 10 seconds,
becoming E 3 ft at 10 seconds and NW 1 foot at 3 seconds. Showers
likely. Vsby 1 to 3 NM early this evening.
.SUN...NE winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: E 3 ft
at 10 seconds. Showers likely.
.SUN NIGHT...N winds 10 to 15 kt. Seas 3 ft. Wave Detail: E 3 ft
at 9 seconds and SE 1 foot at 5 seconds. Showers likely.
.MON...N winds 10 to 15 kt, increasing to 15 to 20 kt in the
afternoon. Seas 3 to 4 ft, building to 4 to 5 ft in the
afternoon. Wave Detail: E 3 ft at 9 seconds and N 2 ft at
4 seconds, becoming N 3 ft at 5 seconds and E 2 ft at 9 seconds.
A chance of showers.
.MON NIGHT...N winds 20 kt with gusts to 25 kt. Seas 4 to 6 ft,
building to 5 to 6 ft after midnight. Wave Detail: N 4 ft at
5 seconds and SE 2 ft at 9 seconds, becoming NE 5 ft at 6 seconds
and E 2 ft at 9 seconds.
.TUE...NE winds 15 to 20 kt, becoming N 10 to 15 kt in the
afternoon. Seas 5 to 6 ft. Wave Detail: E 6 ft at 9 seconds and
NE 5 ft at 6 seconds.
.TUE NIGHT...N winds 5 to 10 kt. Seas 4 to 6 ft, subsiding to
4 to 5 ft after midnight.
.WED...W winds 5 to 10 kt. Seas 4 to 5 ft.
.WED NIGHT...W winds 10 to 15 kt. Seas 4 to 5 ft.
.THU...W winds 10 to 15 kt. Seas 4 to 5 ft.
.THU NIGHT...SW winds 10 to 15 kt. Seas 3 to 4 ft. A slight
chance of showers.

$$