766
FZUS52 KCHS 180529
CWFCHS

Coastal Waters Forecast
National Weather Service Charleston SC
1229 AM 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

AMZ300-181800-
1229 AM 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.

$$

AMZ330-181800-
Charleston Harbor-
1229 AM EST Tue Nov 18 2025

.REST OF TONIGHT...NE winds 5 kt.
.TUE...E winds 5 to 10 kt.
.TUE NIGHT...SE winds 5 kt, becoming SW after midnight.
.WED...SW winds 5 to 10 kt.
.WED NIGHT...SW winds 5 kt.
.THU...NW winds 5 kt, becoming S in the afternoon.
.THU NIGHT...S winds 5 kt.
.FRI...SW winds 5 to 10 kt.
.FRI NIGHT...SW winds 5 to 10 kt.
.SAT...SW winds 10 kt. A slight chance of showers and tstms.
.SAT NIGHT...W winds 5 to 10 kt. A slight chance of showers.

Winds and waves higher in and near tstms.

Unless otherwise noted, waves 1 foot or less.

Charleston Harbor water temperature 61 degrees.

$$

AMZ350-181800-
Waters from South Santee River to Edisto Beach SC out 20 NM-
1229 AM EST Tue Nov 18 2025

.REST OF TONIGHT...NE winds 5 to 10 kt. Seas 2 ft. Wave Detail:
NE 2 ft at 5 seconds and SE 1 foot at 8 seconds.
.TUE...E winds 5 to 10 kt. Seas 2 ft. Wave Detail: E 2 ft at
5 seconds and E 1 foot at 8 seconds.
.TUE NIGHT...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 1 foot at
4 seconds and E 1 foot at 7 seconds.
.WED NIGHT...W winds 5 to 10 kt. Seas 2 ft. Wave Detail: SW
1 foot at 4 seconds and E 1 foot at 7 seconds.
.THU...NW winds 5 kt, becoming S in the afternoon. Seas 1 foot or
less. Wave Detail: S 1 foot at 4 seconds.
.THU NIGHT...SW winds 5 kt. Seas 1 foot or less.
.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. A slight chance of
showers and tstms.
.SAT NIGHT...W winds 10 to 15 kt. Seas 2 to 3 ft. A slight chance
of showers and tstms.

Winds and seas higher in and near tstms.

$$

AMZ352-181800-
Waters from Edisto Beach SC to Savannah GA out 20 NM-
1229 AM EST Tue Nov 18 2025

.REST OF TONIGHT...E winds 5 to 10 kt. Seas 2 ft. Wave Detail: E
2 ft at 5 seconds and SE 1 foot at 8 seconds.
.TUE...E winds 5 to 10 kt. Seas 2 ft. Wave Detail: E 2 ft at
5 seconds and SE 1 foot at 8 seconds.
.TUE NIGHT...SE winds 5 kt, becoming S after midnight. Seas 2 ft.
Wave Detail: E 1 foot at 5 seconds and SE 1 foot at 8 seconds.
.WED...SW winds 5 to 10 kt. Seas 2 ft. Wave Detail: E 1 foot at
5 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 6 seconds.
.THU...W winds 5 kt, becoming SW in the afternoon. Seas 1 foot or
less. Wave Detail: SE 1 foot at 6 seconds.
.THU NIGHT...SW winds 5 kt. Seas 1 foot or less.
.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. A slight chance of showers and
tstms.
.SAT NIGHT...W winds 10 kt. Seas 2 ft. A slight chance of
showers.

Winds and seas higher in and near tstms.

$$

AMZ354-181800-
Waters from Savannah GA to Altamaha Sound GA out 20 NM, including
Grays Reef National Marine Sanctuary-
1229 AM EST Tue Nov 18 2025

.REST OF TONIGHT...NE winds 10 kt. Seas 2 ft. Wave Detail: NE
2 ft at 5 seconds and SE 1 foot at 8 seconds.
.TUE...NE winds 5 to 10 kt. Seas 2 ft. Wave Detail: E 2 ft at
5 seconds and SE 1 foot at 8 seconds.
.TUE NIGHT...E 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...SW winds 5 to 10 kt. Seas 2 ft. Wave Detail: E 1 foot at
6 seconds.
.WED NIGHT...SW winds 5 to 10 kt. Seas 2 ft. Wave Detail: E
1 foot at 5 seconds.
.THU...W winds 5 kt, becoming S in the afternoon. Seas 1 to 2 ft.
Wave Detail: E 1 foot at 6 seconds, becoming S 1 foot at
3 seconds and E 1 foot at 7 seconds.
.THU NIGHT...S winds 5 to 10 kt. Seas 1 foot or less.
.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...W winds 10 kt. Seas 2 ft. A slight chance of
showers.

$$

AMZ374-181800-
Waters from Savannah GA to Altamaha Sound GA from 20 to 60 NM-
1229 AM EST Tue Nov 18 2025

.REST OF TONIGHT...NE winds 10 kt. Seas 2 to 3 ft. Wave Detail:
NE 2 ft at 5 seconds and SE 1 foot at 8 seconds.
.TUE...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.
.TUE NIGHT...SE winds 5 to 10 kt, becoming SW after midnight.
Seas 2 to 3 ft. Wave Detail: E 2 ft at 7 seconds and E 1 foot at
15 seconds.
.WED...W winds 5 to 10 kt. Seas 2 ft. Wave Detail: S 1 foot at
4 seconds and E 1 foot at 7 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...SW winds 5 kt. Seas 2 ft.
.FRI...SW winds 5 to 10 kt. Seas 2 ft.
.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...W winds 10 to 15 kt. Seas 2 to 3 ft. A slight chance
of showers and tstms.

Winds and seas higher in and near tstms.

$$