277
FZUS52 KCHS 121817
CWFCHS

Coastal Waters Forecast
National Weather Service Charleston SC
117 PM 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

AMZ300-130700-
117 PM 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. A dry cold front could move through the area
early next week.

$$

AMZ330-130700-
Charleston Harbor-
117 PM EST Wed Nov 12 2025

.THIS AFTERNOON...SW winds 10 to 15 kt with gusts to 20 kt.
.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.
.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 10 to 15 kt.

Unless otherwise noted, waves 1 foot or less.

Charleston Harbor water temperature 61 degrees.

$$

AMZ350-130700-
Waters from South Santee River to Edisto Beach SC out 20 NM-
117 PM EST Wed Nov 12 2025

...SMALL CRAFT ADVISORY IN EFFECT UNTIL 1 AM EST THURSDAY...

.THIS AFTERNOON...SW winds 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.
.TONIGHT...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...N winds 10 to 15 kt, becoming NW 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...NW winds 5 to 10 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
3 seconds and SW 1 foot at 4 seconds.
.FRI NIGHT...SW winds 5 kt, becoming W after midnight. Seas 2 ft.
Wave Detail: NE 1 foot at 4 seconds and SE 1 foot at 9 seconds.
.SAT...W winds 10 to 15 kt. Seas 2 ft.
.SAT NIGHT...SW winds 15 to 20 kt. Seas 3 to 4 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.

$$

AMZ352-130700-
Waters from Edisto Beach SC to Savannah GA out 20 NM-
117 PM EST Wed Nov 12 2025

.THIS AFTERNOON...SW 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 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 to 10 kt. Seas 2 ft. Wave Detail: NE 1 foot at
2 seconds and SE 1 foot at 9 seconds.
.FRI NIGHT...SE winds 5 kt, becoming SW after midnight. 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 15 to 20 kt. Seas 3 to 4 ft.
.SUN NIGHT...W winds 10 to 15 kt. Seas 3 to 4 ft.

$$

AMZ354-130700-
Waters from Savannah GA to Altamaha Sound GA out 20 NM, including
Grays Reef National Marine Sanctuary-
117 PM EST Wed Nov 12 2025

.THIS AFTERNOON...SW winds 15 kt with gusts to 20 kt. Seas 2 ft.
Wave Detail: SW 2 ft at 4 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...Variable 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 2 ft. Wave Detail: NE 1 foot at
2 seconds and SE 1 foot at 9 seconds.
.FRI NIGHT...SE winds 5 kt, becoming SW 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 15 kt. Seas 2 to 3 ft.
.SUN NIGHT...W winds 10 to 15 kt. Seas 2 to 3 ft.

$$

AMZ374-130700-
Waters from Savannah GA to Altamaha Sound GA from 20 to 60 NM-
117 PM EST Wed Nov 12 2025

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

$$