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National Weather Service Marine Forecast FZUS52 KCHS

FZUS52 KCHS 110939
CWFCHS

Coastal Waters Forecast
National Weather Service Charleston SC
439 AM EST Wed Nov 11 2026

South Santee River SC to Altamaha Sound GA out 60 NM, including Charleston Harbor and Grays Reef National Marine Sanctuary

AMZ300-112300
439 AM EST Wed Nov 11 2026

.Synopsis for the coastal waters of south coastal South Carolina and north coastal Georgia... High pressure will prevail across the region today. A cold front will move through the local waters Thursday evening. High pressure builds back into the region this weekend.


AMZ340-112300
Charleston Harbor
439 AM EST Wed Nov 11 2026

TODAY
SW winds 5 to 10 kt, becoming 10 kt late.

TONIGHT
W winds 5 to 10 kt.

THU
W winds 10 to 15 kt with gusts to 25 kt.

THU NIGHT
NW winds 10 to 15 kt.

FRI
NW winds 10 kt.

FRI NIGHT
NW winds 10 kt.

SAT
N winds 5 to 10 kt.

SAT NIGHT
N winds 5 to 10 kt.

SUN
N winds 5 to 10 kt.

SUN NIGHT
NE winds 5 to 10 kt.

Unless otherwise noted, waves 1 foot or less.

Charleston Harbor water temperature 70 degrees.


AMZ360-112300
Coastal waters from South Santee River to Edisto Beach SC out 20 NM
439 AM EST Wed Nov 11 2026

TODAY
W winds 5 to 10 kt, becoming SW 10 to 15 kt this afternoon. Seas 2 to 3 ft. Wave Detail: SW 2 ft at 4 seconds and E 2 ft at 11 seconds.

TONIGHT
W winds 15 to 20 kt. Seas 2 to 3 ft, building to 3 to 4 ft after midnight. Wave Detail: SW 3 ft at 4 seconds and E 2 ft at 10 seconds, becoming SW 3 ft at 5 seconds and E 1 foot at 10 seconds.

THU
W winds 15 to 20 kt with gusts to 25 kt. Seas 3 to 4 ft, building to 4 to 5 ft in the afternoon. Wave Detail: SW 4 ft at 5 seconds and E 1 foot at 10 seconds, becoming SW 5 ft at 5 seconds and E 1 foot at 10 seconds.

THU NIGHT
NW winds 15 to 20 kt with gusts to 25 kt. Seas 4 to 5 ft, subsiding to 3 to 4 ft after midnight. Wave Detail: SW 5 ft at 6 seconds and E 1 foot at 10 seconds, becoming W 4 ft at 6 seconds and E 1 foot at 10 seconds.

FRI
NW winds 10 to 15 kt with gusts to 20 kt. Seas 3 to 4 ft, subsiding to 2 to 3 ft in the afternoon. Wave Detail: NW 3 ft at 5 seconds and E 1 foot at 10 seconds, becoming NW 2 ft at 4 seconds and NE 1 foot at 5 seconds.

FRI NIGHT
NW winds 15 to 20 kt. Seas 2 to 3 ft. Wave Detail: NW 3 ft at 4 seconds.

SAT
N winds 15 to 20 kt. Seas 2 to 3 ft.

SAT NIGHT
N winds 10 to 15 kt. Seas 2 ft.

SUN
N winds 10 to 15 kt. Seas 2 ft.

SUN NIGHT
NE winds 10 to 15 kt. Seas 2 ft.


AMZ362-112300
Coastal waters from Edisto Beach SC to Savannah GA out 20 NM
439 AM EST Wed Nov 11 2026

TODAY
W winds 5 to 10 kt, becoming SW late. Seas 2 ft. Wave Detail: SW 2 ft at 3 seconds and E 2 ft at 11 seconds.

TONIGHT
W winds 10 to 15 kt with gusts to 20 kt. Seas 2 to 3 ft. Wave Detail: SW 3 ft at 4 seconds and E 2 ft at 10 seconds.

THU
W winds 15 to 20 kt with gusts to 25 kt. Seas 3 to 4 ft. Wave Detail: SW 3 ft at 4 seconds and E 1 foot at 10 seconds.

THU NIGHT
NW winds 15 to 20 kt with gusts to 25 kt. Seas 3 to 4 ft. Wave Detail: W 4 ft at 5 seconds and E 1 foot at 10 seconds.

FRI
NW winds 15 to 20 kt, becoming W 10 to 15 kt in the afternoon. Seas 3 to 4 ft, subsiding to 2 to 3 ft in the afternoon. Wave Detail: NW 3 ft at 4 seconds and E 1 foot at 10 seconds, becoming NW 2 ft at 4 seconds and E 1 foot at 8 seconds.

FRI NIGHT
NW winds 15 to 20 kt with gusts to 25 kt. Seas 2 to 3 ft. Wave Detail: NW 3 ft at 4 seconds.

SAT
N winds 15 to 20 kt. Seas 2 to 3 ft.

SAT NIGHT
N winds 10 to 15 kt. Seas 2 ft.

SUN
NE winds 10 to 15 kt. Seas 2 ft.

SUN NIGHT
NE winds 10 to 15 kt. Seas 2 ft.


AMZ364-112300
Coastal waters from Savannah GA to Altamaha Sound GA out 20 nm, including Grays Reef National Marine Sanctuary
439 AM EST Wed Nov 11 2026

TODAY
W winds 5 to 10 kt, becoming SW late. Seas 2 ft. Wave Detail: E 2 ft at 11 seconds and SW 1 foot at 2 seconds.

TONIGHT
W winds 10 to 15 kt with gusts to 20 kt. Seas 2 to 3 ft. Wave Detail: SW 2 ft at 3 seconds and E 2 ft at 10 seconds.

THU
W winds 15 to 20 kt. Seas 2 to 3 ft. Wave Detail: W 3 ft at 4 seconds and E 1 foot at 10 seconds.

THU NIGHT
NW winds 15 to 20 kt with gusts to 25 kt. Seas 2 to 3 ft, building to 3 to 4 ft after midnight. Wave Detail: W 3 ft at 4 seconds and E 1 foot at 10 seconds, becoming NW 3 ft at 4 seconds and E 1 foot at 10 seconds.

FRI
NW winds 15 to 20 kt. Seas 2 to 3 ft. Wave Detail: NW 3 ft at 4 seconds and E 1 foot at 10 seconds.

FRI NIGHT
NW winds 15 to 20 kt with gusts to 25 kt. Seas 2 to 3 ft. Wave Detail: NW 3 ft at 4 seconds and NE 1 foot at 5 seconds.

SAT
N winds 15 to 20 kt. Seas 2 to 3 ft.

SAT NIGHT
N winds 10 to 15 kt. Seas 2 ft.

SUN
NE winds 10 to 15 kt. Seas 2 to 3 ft.

SUN NIGHT
NE winds 10 to 15 kt. Seas 2 to 3 ft.


AMZ380-112300
Waters from South Santee River SC to Edisto Beach SC extending from 20 to 60 NM
439 AM EST Wed Nov 11 2026

TODAY
W winds 5 to 10 kt, becoming SW 10 to 15 kt with gusts to 20 kt this afternoon. Seas 3 to 4 ft. Wave Detail: SW 3 ft at 4 seconds and E 2 ft at 11 seconds.

TONIGHT
W winds 15 to 20 kt with gusts to 25 kt. Seas 3 to 4 ft, building to 4 to 5 ft after midnight. Wave Detail: SW 4 ft at 5 seconds and E 2 ft at 10 seconds, becoming SW 5 ft at 5 seconds and E 2 ft at 10 seconds.

THU
W winds 20 to 25 kt with gusts to 30 kt. Seas 4 to 5 ft, building to 5 to 7 ft in the afternoon. Wave Detail: SW 5 ft at 6 seconds and E 1 foot at 10 seconds, becoming SW 7 ft at 6 seconds and E 1 foot at 10 seconds.

THU NIGHT
NW winds 20 to 25 kt with gusts to 30 kt. Seas 5 to 7 ft. Wave Detail: W 7 ft at 6 seconds and E 1 foot at 10 seconds.

FRI
NW winds 15 to 20 kt with gusts to 25 kt. Seas 4 to 6 ft, subsiding to 3 to 4 ft in the afternoon. Wave Detail: NW 5 ft at 6 seconds and E 1 foot at 10 seconds, becoming NW 4 ft at 5 seconds and E 1 foot at 10 seconds.

FRI NIGHT
NW winds 15 to 20 kt with gusts to 25 kt. Seas 3 to 4 ft. Wave Detail: NW 4 ft at 5 seconds and NE 1 foot at 7 seconds.

SAT
N winds 15 to 20 kt. Seas 3 to 4 ft.

SAT NIGHT
N winds 10 to 15 kt. Seas 2 to 3 ft.

SUN
N winds 10 to 15 kt. Seas 2 to 3 ft.

SUN NIGHT
NE winds 10 to 15 kt. Seas 2 ft.


AMZ382-112300
Waters from Edisto Beach SC to Savannah GA extending from 20 to 60 NM
439 AM EST Wed Nov 11 2026

TODAY
W winds 10 to 15 kt. Seas 2 to 3 ft. Wave Detail: SW 2 ft at 3 seconds and E 2 ft at 11 seconds.

TONIGHT
W winds 15 to 20 kt with gusts to 25 kt. Seas 3 to 4 ft, building to 4 to 5 ft after midnight. Wave Detail: SW 3 ft at 4 seconds and E 2 ft at 10 seconds, becoming W 4 ft at 5 seconds and E 2 ft at 10 seconds.

THU
W winds 15 to 20 kt, increasing to 20 to 25 kt in the afternoon. Seas 4 to 5 ft, building to 4 to 6 ft in the afternoon. Wave Detail: W 4 ft at 5 seconds and E 2 ft at 10 seconds, becoming SW 5 ft at 5 seconds and E 1 foot at 10 seconds.

THU NIGHT
NW winds 20 to 25 kt with gusts to 30 kt. Seas 4 to 6 ft. Wave Detail: W 6 ft at 6 seconds and E 1 foot at 10 seconds.

FRI
NW winds 15 to 20 kt with gusts to 25 kt. Seas 4 to 5 ft, subsiding to 3 to 4 ft in the afternoon. Wave Detail: NW 5 ft at 5 seconds and E 1 foot at 10 seconds, becoming NW 4 ft at 5 seconds and E 1 foot at 10 seconds.

FRI NIGHT
NW winds 15 to 20 kt with gusts to 25 kt. Seas 3 to 4 ft, building to 4 to 5 ft after midnight. Wave Detail: NW 4 ft at 5 seconds and E 1 foot at 10 seconds.

SAT
N winds 15 to 20 kt. Seas 3 to 4 ft.

SAT NIGHT
N winds 10 to 15 kt. Seas 2 to 3 ft.

SUN
N winds 10 to 15 kt. Seas 2 to 3 ft.

SUN NIGHT
NE winds 10 to 15 kt. Seas 2 to 3 ft.


AMZ384-112300
Waters from Savannah GA to Altamaha Sound GA extending from 20 to 60 NM
439 AM EST Wed Nov 11 2026

TODAY
W winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: E 3 ft at 11 seconds and W 2 ft at 3 seconds.

TONIGHT
W winds 10 to 15 kt, increasing to 15 to 20 kt after midnight. Seas 3 to 4 ft. Wave Detail: W 4 ft at 4 seconds and E 2 ft at 10 seconds.

THU
W winds 15 to 20 kt with gusts to 25 kt. Seas 3 to 4 ft, building to 4 to 5 ft in the afternoon. Wave Detail: W 4 ft at 4 seconds and E 2 ft at 10 seconds, becoming SW 4 ft at 5 seconds and E 1 foot at 10 seconds.

THU NIGHT
NW winds 20 to 25 kt with gusts to 30 kt. Seas 4 to 5 ft. Wave Detail: W 5 ft at 5 seconds and E 1 foot at 10 seconds.

FRI
NW winds 15 to 20 kt with gusts to 25 kt. Seas 4 to 5 ft, subsiding to 3 to 4 ft in the afternoon. Wave Detail: NW 5 ft at 5 seconds and E 1 foot at 10 seconds, becoming NW 4 ft at 5 seconds and E 1 foot at 10 seconds.

FRI NIGHT
NW winds 20 kt with gusts to 25 kt. Seas 4 to 5 ft. Wave Detail: NW 5 ft at 5 seconds and E 1 foot at 10 seconds.

SAT
N winds 15 to 20 kt. Seas 3 to 4 ft.

SAT NIGHT
N winds 10 to 15 kt. Seas 2 ft.

SUN
NE winds 10 to 15 kt. Seas 2 to 3 ft.

SUN NIGHT
NE winds 10 to 15 kt. Seas 2 to 3 ft.