521
FZUS52 KCHS 111420
CWFCHS

Coastal Waters Forecast
National Weather Service Charleston SC
920 AM EST Tue Nov 11 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

AMZ300-120300-
920 AM EST Tue Nov 11 2025

.Synopsis for the coastal waters of south coastal South Carolina
and north coastal Georgia...
An abnormal cold and dry airmass will continue to build into the
region overnight. Expect cold and breezy conditons on Tuesday,
before temperatures warm back up on Wednesday and through the
rest of the week.

$$

AMZ330-120300-
Charleston Harbor-
920 AM EST Tue Nov 11 2025

.REST OF TODAY...W winds 10 kt.
.TONIGHT...W winds 5 to 10 kt.
.WED...W winds 10 to 15 kt.
.WED NIGHT...W winds 5 to 10 kt.
.THU...NW winds 5 kt.
.THU NIGHT...NW winds 5 kt.
.FRI...E winds 5 kt.
.FRI NIGHT...SW winds 5 kt.
.SAT...W winds 5 kt.
.SAT NIGHT...SW winds 5 kt.

Unless otherwise noted, waves 1 foot or less.

Charleston Harbor water temperature 62 degrees.

$$

AMZ350-120300-
Waters from South Santee River to Edisto Beach SC out 20 NM-
920 AM EST Tue Nov 11 2025

.REST OF TODAY...NW winds 15 to 20 kt, becoming W 10 to 15 kt
late. Seas 3 to 4 ft, subsiding to 2 to 3 ft this afternoon. Wave
Detail: NW 4 ft at 5 seconds and E 1 foot at 10 seconds, becoming
NW 3 ft at 5 seconds and E 1 foot at 7 seconds.
.TONIGHT...W winds 10 to 15 kt, increasing to 15 to 20 kt after
midnight. Seas 2 to 3 ft. Wave Detail: W 3 ft at 4 seconds and E
1 foot at 7 seconds.
.WED...W winds 15 to 20 kt with gusts to 25 kt. Seas 2 to 3 ft,
building to 3 to 4 ft in the afternoon. Wave Detail: SW 3 ft at
4 seconds and SE 1 foot at 9 seconds, becoming SW 4 ft at
5 seconds and SE 1 foot at 9 seconds.
.WED NIGHT...W winds 15 to 20 kt, becoming NW 10 to 15 kt after
midnight. Seas 3 to 4 ft. Wave Detail: SW 4 ft at 5 seconds and
SE 1 foot at 9 seconds.
.THU...NW winds 5 to 10 kt, diminishing to 5 kt in the afternoon.
Seas 2 to 3 ft. Wave Detail: W 2 ft at 5 seconds and SE 1 foot at
9 seconds.
.THU NIGHT...N winds 5 kt. Seas 2 ft in the evening, then 1 foot
or less. Wave Detail: SW 1 foot at 4 seconds and SE 1 foot at
9 seconds.
.FRI...NE winds 5 kt. Seas 2 ft.
.FRI NIGHT...W winds 5 to 10 kt. Seas 2 ft.
.SAT...W winds 5 to 10 kt. Seas 2 ft.
.SAT NIGHT...SW winds 5 to 10 kt. Seas 2 ft.

$$

AMZ352-120300-
Waters from Edisto Beach SC to Savannah GA out 20 NM-
920 AM EST Tue Nov 11 2025

.REST OF TODAY...NW winds 15 to 20 kt, diminishing to 10 to 15 kt
with gusts to 20 kt this afternoon. Seas 3 to 4 ft, subsiding to
2 to 3 ft this afternoon. Wave Detail: NW 4 ft at 4 seconds and E
1 foot at 8 seconds, becoming NW 3 ft at 4 seconds and NE 1 foot
at 7 seconds.
.TONIGHT...W winds 10 to 15 kt. Seas 2 ft. Wave Detail: W 2 ft at
3 seconds.
.WED...W winds 15 kt with gusts to 20 kt. Seas 2 to 3 ft. Wave
Detail: SW 3 ft at 4 seconds and SE 1 foot at 9 seconds.
.WED NIGHT...W winds 10 to 15 kt with gusts to 20 kt. Seas 2 to
3 ft. Wave Detail: SW 3 ft at 4 seconds and SE 1 foot at
9 seconds.
.THU...NW winds 5 to 10 kt. Seas 2 ft. Wave Detail: NW 2 ft at
4 seconds and SE 1 foot at 9 seconds.
.THU NIGHT...Variable winds 5 kt. Seas 1 foot or less. Wave
Detail: SW 1 foot at 3 seconds and SE 1 foot at 9 seconds.
.FRI...NE winds 5 kt. Seas 1 foot or less.
.FRI NIGHT...SW winds 5 kt. Seas 2 ft.
.SAT...W winds 5 kt. Seas 2 ft.
.SAT NIGHT...SW winds 5 to 10 kt. Seas 2 ft.

$$

AMZ354-120300-
Waters from Savannah GA to Altamaha Sound GA out 20 NM, including
Grays Reef National Marine Sanctuary-
920 AM EST Tue Nov 11 2025

...SMALL CRAFT ADVISORY IN EFFECT UNTIL NOON EST TODAY...

.REST OF TODAY...NW winds 15 to 20 kt, diminishing to 10 kt late.
Seas 3 to 4 ft, subsiding to 2 to 3 ft this afternoon. Wave
Detail: NW 4 ft at 4 seconds and NE 1 foot at 8 seconds, becoming
N 2 ft at 5 seconds.
.TONIGHT...W winds 10 to 15 kt. Seas 2 ft. Wave Detail: W 2 ft at
3 seconds and NE 1 foot at 6 seconds.
.WED...W winds 10 to 15 kt. Seas 2 ft. Wave Detail: W 2 ft at
3 seconds.
.WED NIGHT...W winds 10 to 15 kt. Seas 2 ft. Wave Detail: SW 2 ft
at 4 seconds and SE 1 foot at 9 seconds.
.THU...NW winds 5 to 10 kt. Seas 2 ft. Wave Detail: NW 2 ft at
3 seconds and SE 1 foot at 9 seconds.
.THU NIGHT...S winds 5 kt, becoming N after midnight. Seas 1 foot
or less. Wave Detail: SW 1 foot at 2 seconds and SE 1 foot at
9 seconds.
.FRI...NE winds 5 kt. Seas 1 foot or less.
.FRI NIGHT...SW winds 5 kt. Seas 2 ft.
.SAT...NW winds 5 kt. Seas 2 ft.
.SAT NIGHT...S winds 5 to 10 kt. Seas 2 ft.

$$

AMZ374-120300-
Waters from Savannah GA to Altamaha Sound GA from 20 to 60 NM-
920 AM EST Tue Nov 11 2025

...SMALL CRAFT ADVISORY IN EFFECT UNTIL NOON EST TODAY...

.REST OF TODAY...NW winds 15 to 20 kt with gusts to 25 kt,
diminishing to 10 to 15 kt late. Seas 4 to 6 ft, subsiding to
3 to 4 ft this afternoon. Wave Detail: NW 6 ft at 6 seconds and E
1 foot at 10 seconds, becoming NW 4 ft at 5 seconds and NE 1 foot
at 10 seconds.
.TONIGHT...W winds 10 to 15 kt. Seas 2 to 3 ft. Wave Detail: NW
3 ft at 5 seconds and NE 1 foot at 7 seconds.
.WED...W winds 10 to 15 kt with gusts to 20 kt. Seas 2 to 3 ft.
Wave Detail: W 3 ft at 4 seconds and SE 1 foot at 9 seconds.
.WED NIGHT...W winds 15 to 20 kt. Seas 3 to 4 ft. Wave Detail: W
3 ft at 4 seconds and SE 1 foot at 9 seconds.
.THU...NW winds 10 to 15 kt with gusts to 20 kt, diminishing to
5 to 10 kt in the afternoon. Seas 2 to 3 ft. Wave Detail: W 3 ft
at 4 seconds and SE 1 foot at 9 seconds.
.THU NIGHT...N winds 5 kt. Seas 2 ft. Wave Detail: NW 1 foot at
3 seconds and SE 1 foot at 9 seconds.
.FRI...NE winds 5 kt. Seas 2 ft.
.FRI NIGHT...SW winds 5 to 10 kt. Seas 2 ft.
.SAT...NW winds 5 to 10 kt. Seas 2 ft.
.SAT NIGHT...SW winds 5 to 10 kt. Seas 2 to 3 ft.

$$