049
FZUS52 KCHS 181739
CWFCHS

Coastal Waters Forecast
National Weather Service Charleston SC
1239 PM EST Tue Nov 18 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

AMZ300-190600-
1239 PM EST Tue Nov 18 2025

.Synopsis for the coastal waters of south coastal South Carolina
and north coastal Georgia...
Dry high pressure is expected to prevail across the area through
the week. A cold front is expected to move through this weekend.

$$

AMZ330-190600-
Charleston Harbor-
1239 PM EST Tue Nov 18 2025

.THIS AFTERNOON...E winds 5 kt.
.TONIGHT...SE winds 5 kt, becoming SW after midnight.
.WED...SW winds 5 to 10 kt.
.WED NIGHT...SW winds 5 kt, becoming NW after midnight.
.THU...N winds 5 kt, becoming E in the afternoon.
.THU NIGHT...Variable winds 5 kt.
.FRI...SW winds 5 to 10 kt.
.FRI NIGHT...SW winds 5 to 10 kt.
.SAT...SW winds 5 to 10 kt.
.SAT NIGHT...W winds 5 to 10 kt.

Unless otherwise noted, waves 1 foot or less.

Charleston Harbor water temperature 61 degrees.

$$

AMZ350-190600-
Waters from South Santee River to Edisto Beach SC out 20 NM-
1239 PM EST Tue Nov 18 2025

.THIS AFTERNOON...E winds 5 to 10 kt. Seas 2 ft. Wave Detail: E
1 foot at 4 seconds and E 1 foot at 8 seconds.
.TONIGHT...S winds 5 to 10 kt, becoming SW after midnight. Seas
2 ft. Wave Detail: SE 1 foot at 4 seconds and E 1 foot at
8 seconds.
.WED...SW winds 5 to 10 kt. Seas 2 ft. Wave Detail: S 2 ft at
4 seconds and E 1 foot at 4 seconds.
.WED NIGHT...SW winds 5 to 10 kt, becoming NW after midnight.
Seas 2 ft. Wave Detail: SW 2 ft at 4 seconds and E 1 foot at
6 seconds.
.THU...NE winds 5 to 10 kt. Seas 1 foot or less. Wave Detail: NE
1 foot at 3 seconds and S 1 foot at 4 seconds.
.THU NIGHT...E winds 5 kt, becoming S after midnight. Seas 1 foot
or less. Wave Detail: S 1 foot at 4 seconds and E 1 foot at
4 seconds.
.FRI...SW winds 5 to 10 kt. Seas 1 foot or less.
.FRI NIGHT...SW winds 10 to 15 kt. Seas 2 ft.
.SAT...SW winds 10 to 15 kt. Seas 2 to 3 ft.
.SAT NIGHT...W winds 10 to 15 kt. Seas 2 to 3 ft. A slight chance
of showers.

$$

AMZ352-190600-
Waters from Edisto Beach SC to Savannah GA out 20 NM-
1239 PM EST Tue Nov 18 2025

.THIS AFTERNOON...E winds 5 to 10 kt. Seas 2 ft. Wave Detail: E
2 ft at 5 seconds and SE 1 foot at 8 seconds.
.TONIGHT...SE winds 5 kt, becoming SW after midnight. Seas 2 ft.
Wave Detail: E 1 foot at 4 seconds and E 1 foot at 8 seconds.
.WED...SW winds 5 to 10 kt. Seas 2 ft. Wave Detail: S 1 foot at
4 seconds and E 1 foot at 5 seconds.
.WED NIGHT...SW winds 5 to 10 kt, becoming W after midnight. Seas
2 ft. Wave Detail: SE 1 foot at 5 seconds.
.THU...NW winds 5 kt, becoming SE in the afternoon. Seas 1 foot
or less. Wave Detail: SE 1 foot at 5 seconds.
.THU NIGHT...S winds 5 kt. Seas 1 foot or less. Wave Detail: SE
1 foot at 5 seconds.
.FRI...SW winds 5 to 10 kt. Seas 1 foot or less.
.FRI NIGHT...SW winds 5 to 10 kt. Seas 2 ft.
.SAT...SW winds 10 to 15 kt. Seas 2 ft.
.SAT NIGHT...SW winds 10 kt. Seas 2 ft.

$$

AMZ354-190600-
Waters from Savannah GA to Altamaha Sound GA out 20 NM, including
Grays Reef National Marine Sanctuary-
1239 PM EST Tue Nov 18 2025

.THIS AFTERNOON...NE winds 5 to 10 kt. Seas 2 ft. Wave Detail: E
2 ft at 5 seconds and SE 1 foot at 8 seconds.
.TONIGHT...SE winds 5 kt, becoming SW after midnight. Seas 2 ft.
Wave Detail: E 2 ft at 5 seconds and E 1 foot at 8 seconds.
.WED...W winds 5 to 10 kt, becoming SW in the afternoon. Seas
2 ft. Wave Detail: S 1 foot at 4 seconds and NE 1 foot at
5 seconds.
.WED NIGHT...SW winds 5 to 10 kt, becoming W after midnight. Seas
2 ft. Wave Detail: SE 1 foot at 6 seconds.
.THU...NW winds 5 kt, becoming S in the afternoon. Seas 1 to
2 ft. Wave Detail: S 1 foot at 4 seconds and E 1 foot at
7 seconds, becoming SE 1 foot at 6 seconds.
.THU NIGHT...S winds 5 kt. Seas 1 foot or less. Wave Detail: E
1 foot at 6 seconds.
.FRI...SW winds 5 to 10 kt. Seas 1 foot or less.
.FRI NIGHT...SW winds 10 kt. Seas 2 ft.
.SAT...SW winds 10 kt. Seas 2 ft.
.SAT NIGHT...SW winds 10 kt. Seas 2 ft.

$$

AMZ374-190600-
Waters from Savannah GA to Altamaha Sound GA from 20 to 60 NM-
1239 PM EST Tue Nov 18 2025

.THIS AFTERNOON...E winds 5 to 10 kt. Seas 2 to 3 ft. Wave
Detail: E 2 ft at 7 seconds and E 1 foot at 13 seconds.
.TONIGHT...SE winds 5 to 10 kt, becoming SW after midnight. Seas
2 to 3 ft. Wave Detail: E 2 ft at 7 seconds and S 1 foot at
4 seconds.
.WED...W winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: E 2 ft at
7 seconds and S 1 foot at 4 seconds.
.WED NIGHT...SW winds 5 to 10 kt. Seas 2 ft. Wave Detail: S
1 foot at 4 seconds and E 1 foot at 7 seconds.
.THU...W winds 5 to 10 kt. Seas 2 ft. Wave Detail: SW 1 foot at
3 seconds and E 1 foot at 7 seconds.
.THU NIGHT...S winds 5 kt. Seas 2 ft in the evening, then 1 foot
or less. Wave Detail: SW 1 foot at 3 seconds and E 1 foot at
7 seconds, becoming SW 1 foot at 2 seconds and E 1 foot at
7 seconds.
.FRI...SW winds 5 kt. Seas 1 foot or less.
.FRI NIGHT...SW winds 10 to 15 kt. Seas 2 to 3 ft.
.SAT...SW winds 10 to 15 kt. Seas 2 to 3 ft.
.SAT NIGHT...SW winds 10 to 15 kt. Seas 2 to 3 ft.

$$