761
FZUS52 KCHS 121144
CWFCHS

Coastal Waters Forecast
National Weather Service Charleston SC
644 AM EST Wed Nov 12 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

AMZ300-130015-
644 AM EST Wed Nov 12 2025

.Synopsis for the coastal waters of south coastal South Carolina
and north coastal Georgia...
Dry high pressure will remain the primary feature across the area
through the weekend.

$$

AMZ330-130015-
Charleston Harbor-
644 AM EST Wed Nov 12 2025

.TODAY...W winds 10 to 15 kt with gusts to 20 kt late morning and
afternoon.
.TONIGHT...W winds 10 to 15 kt with gusts to 20 kt, diminishing
to 5 to 10 kt after midnight.
.THU...NW winds 5 to 10 kt.
.THU NIGHT...NW winds 5 kt.
.FRI...NE winds 5 kt, becoming E in the afternoon.
.FRI NIGHT...SW winds 5 kt.
.SAT...W winds 5 to 10 kt.
.SAT NIGHT...SW winds 5 to 10 kt.
.SUN...SW winds 10 to 15 kt.
.SUN NIGHT...W winds 5 to 10 kt.

Unless otherwise noted, waves 1 foot or less.

Charleston Harbor water temperature 61 degrees.

$$

AMZ350-130015-
Waters from South Santee River to Edisto Beach SC out 20 NM-
644 AM EST Wed Nov 12 2025

...SMALL CRAFT ADVISORY IN EFFECT FROM 11 AM EST THIS MORNING
THROUGH THIS EVENING...

.TODAY...W winds 15 to 20 kt with gusts to 25 kt late morning and
afternoon. Seas 2 to 3 ft, building to 3 to 5 ft this 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.
.TONIGHT...W winds 15 to 20 kt with gusts to 25 kt. Seas 3 to
4 ft. Wave Detail: SW 4 ft at 5 seconds and SE 1 foot at
9 seconds.
.THU...N winds 10 to 15 kt, diminishing to 5 kt in the afternoon.
Seas 2 to 3 ft. Wave Detail: W 3 ft at 5 seconds and SE 1 foot at
9 seconds.
.THU NIGHT...N winds 5 kt. Seas 2 ft. Wave Detail: SW 1 foot at
4 seconds and SE 1 foot at 9 seconds.
.FRI...NE winds 5 to 10 kt. Seas 2 ft. Wave Detail: NE 1 foot at
2 seconds and W 1 foot at 4 seconds.
.FRI NIGHT...SW winds 5 to 10 kt. Seas 2 ft. Wave Detail: NE
1 foot at 4 seconds and SE 1 foot at 9 seconds.
.SAT...W winds 5 to 10 kt. Seas 2 ft.
.SAT NIGHT...SW winds 10 to 15 kt. Seas 2 to 3 ft.
.SUN...SW winds 15 to 20 kt. Seas 4 to 5 ft.
.SUN NIGHT...W winds 15 to 20 kt. Seas 4 to 5 ft.

$$

AMZ352-130015-
Waters from Edisto Beach SC to Savannah GA out 20 NM-
644 AM EST Wed Nov 12 2025

.TODAY...W winds 15 to 20 kt. Seas 2 to 3 ft. Wave Detail: SW
3 ft at 4 seconds and SE 1 foot at 9 seconds.
.TONIGHT...W winds 15 to 20 kt, diminishing to 10 to 15 kt after
midnight. Seas 2 to 3 ft. Wave Detail: SW 3 ft at 4 seconds and
SE 1 foot at 9 seconds.
.THU...NW winds 10 to 15 kt, becoming N 5 kt in the afternoon.
Seas 2 to 3 ft. Wave Detail: NW 2 ft at 4 seconds and SE 1 foot
at 9 seconds.
.THU NIGHT...NE 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, then around 2 ft in
the afternoon. Wave Detail: SE 1 foot at 9 seconds, becoming NE
1 foot at 2 seconds and SE 1 foot at 9 seconds.
.FRI NIGHT...Variable winds 5 kt. Seas 2 ft. Wave Detail: NE
1 foot at 3 seconds and SE 1 foot at 9 seconds.
.SAT...W winds 5 to 10 kt. Seas 2 ft.
.SAT NIGHT...SW winds 10 to 15 kt. Seas 2 to 3 ft.
.SUN...SW winds 10 to 15 kt. Seas 2 to 3 ft.
.SUN NIGHT...W winds 10 to 15 kt. Seas 2 to 3 ft.

$$

AMZ354-130015-
Waters from Savannah GA to Altamaha Sound GA out 20 NM, including
Grays Reef National Marine Sanctuary-
644 AM EST Wed Nov 12 2025

.TODAY...W winds 10 to 15 kt with gusts to 20 kt. Seas 2 ft. Wave
Detail: W 2 ft at 3 seconds and SE 1 foot at 9 seconds.
.TONIGHT...W winds 10 to 15 kt with gusts to 20 kt. Seas 2 to
3 ft. Wave Detail: SW 2 ft at 4 seconds and SE 1 foot at
9 seconds.
.THU...NW winds 10 to 15 kt, becoming NE 5 kt in the afternoon.
Seas 2 ft. Wave Detail: NW 2 ft at 3 seconds and SE 1 foot at
9 seconds.
.THU NIGHT...NE winds 5 kt. Seas 1 foot or less. Wave Detail: W
1 foot at 2 seconds and SE 1 foot at 9 seconds.
.FRI...NE winds 5 to 10 kt. Seas 1 foot or less, then around 2 ft
in the afternoon. Wave Detail: N 1 foot at 2 seconds and SE
1 foot at 9 seconds, becoming NE 1 foot at 2 seconds and SE
1 foot at 9 seconds.
.FRI NIGHT...SE winds 5 kt, becoming W after midnight. Seas 2 ft.
Wave Detail: NE 1 foot at 3 seconds and SE 1 foot at 9 seconds.
.SAT...SW winds 5 to 10 kt. Seas 2 ft.
.SAT NIGHT...SW winds 10 to 15 kt. Seas 2 to 3 ft.
.SUN...SW winds 10 to 15 kt. Seas 2 to 3 ft.
.SUN NIGHT...W winds 10 to 15 kt. Seas 2 to 3 ft.

$$

AMZ374-130015-
Waters from Savannah GA to Altamaha Sound GA from 20 to 60 NM-
644 AM EST Wed Nov 12 2025

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

$$