706
FZUS52 KCHS 182139
CWFCHS

Coastal Waters Forecast
National Weather Service Charleston SC
439 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

AMZ300-191000-
439 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.

$$

AMZ330-191000-
Charleston Harbor-
439 PM EST Tue Nov 18 2025

.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 kt, increasing to 5 to 10 kt in the afternoon.
.FRI NIGHT...SW winds 5 to 10 kt.
.SAT...SW winds 5 to 10 kt.
.SAT NIGHT...W winds 5 to 10 kt.
.SUN...W winds 5 to 10 kt.
.SUN NIGHT...NE winds 5 kt.

Unless otherwise noted, waves 1 foot or less.

Charleston Harbor water temperature 62 degrees.

$$

AMZ350-191000-
Waters from South Santee River to Edisto Beach SC out 20 NM-
439 PM EST Tue Nov 18 2025

.TONIGHT...SE 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. Wave Detail: S
1 foot at 3 seconds and NE 1 foot at 4 seconds.
.FRI NIGHT...SW winds 5 to 10 kt, increasing to 10 to 15 kt after
midnight. 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.
.SUN...N winds 10 kt. Seas 2 ft.
.SUN NIGHT...NE winds 5 to 10 kt. Seas 2 ft.

$$

AMZ352-191000-
Waters from Edisto Beach SC to Savannah GA out 20 NM-
439 PM EST Tue Nov 18 2025

.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. Wave Detail: S
1 foot at 3 seconds and SE 1 foot at 8 seconds.
.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.
.SUN...W winds 5 to 10 kt. Seas 2 ft.
.SUN NIGHT...E winds 5 to 10 kt. Seas 1 foot or less.

$$

AMZ354-191000-
Waters from Savannah GA to Altamaha Sound GA out 20 NM, including
Grays Reef National Marine Sanctuary-
439 PM EST Tue Nov 18 2025

.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. Wave Detail: SE
1 foot at 4 seconds and SE 1 foot at 7 seconds.
.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.
.SUN...SW winds 5 to 10 kt. Seas 2 ft.
.SUN NIGHT...E winds 5 to 10 kt. Seas 2 ft.

$$

AMZ374-191000-
Waters from Savannah GA to Altamaha Sound GA from 20 to 60 NM-
439 PM EST Tue Nov 18 2025

.TONIGHT...SE winds 5 to 10 kt, becoming SW late. 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. Wave Detail: S 1 foot
at 3 seconds and E 1 foot at 7 seconds.
.FRI NIGHT...S winds 5 to 10 kt, becoming SW 10 to 15 kt after
midnight. 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.
.SUN...W winds 10 to 15 kt. Seas 2 to 3 ft.
.SUN NIGHT...NE winds 10 kt. Seas 2 ft.

$$