FZUS52 KCHS 290550
CWFCHS

Coastal Waters Forecast
National Weather Service Charleston SC
1249 AM EST Sat Nov 29 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

AMZ300-291800
1249 AM EST Sat Nov 29 2025

.Synopsis for the coastal waters of south coastal South Carolina and north coastal Georgia... High pressure will prevail through the weekend. A storm system should bring some impacts to our area late Monday into Tuesday. High pressure returns for the middle to end of next week.

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AMZ330-291800
Charleston Harbor
1249 AM EST Sat Nov 29 2025

REST OF TONIGHT
NE winds 10 kt.

SAT
NE winds 10 to 15 kt.

SAT NIGHT
NE winds 5 to 10 kt.

SUN
NE winds 5 kt, becoming SW in the afternoon.

SUN NIGHT
N winds 5 to 10 kt. A slight chance of showers after midnight.

MON
NE winds 10 to 15 kt.

MON NIGHT
NE winds 10 kt. A slight chance of showers in the evening, then showers likely with a chance of tstms after midnight.

TUE
SW winds 10 to 15 kt. Showers with a slight chance of tstms.

TUE NIGHT
NW winds 10 to 15 kt. A slight chance of showers.

WED
N winds 5 to 10 kt.

WED NIGHT
N winds 5 kt.

Winds and waves higher in and near tstms.

Unless otherwise noted, waves 1 foot or less.

Charleston Harbor water temperature 62 degrees.

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AMZ350-291800
Waters from South Santee River to Edisto Beach SC out 20 NM
1249 AM EST Sat Nov 29 2025

REST OF TONIGHT
NE winds 15 kt with gusts to 20 kt. Seas 2 to 3 ft. Wave Detail: NE 3 ft at 6 seconds.

SAT
NE winds 15 to 20 kt. Seas 3 to 4 ft. Wave Detail: NE 4 ft at 5 seconds.

SAT NIGHT
NE winds 15 to 20 kt, becoming E 10 to 15 kt after midnight. Seas 3 to 4 ft. Wave Detail: NE 4 ft at 5 seconds.

SUN
E winds 5 to 10 kt, becoming NW in the afternoon. Seas 3 ft. Wave Detail: E 3 ft at 6 seconds.

SUN NIGHT
N winds 5 kt, increasing to 10 to 15 kt after midnight. Seas 2 to 3 ft. Wave Detail: SE 3 ft at 7 seconds. A slight chance of showers after midnight.

MON
NE winds 15 to 20 kt. Seas 4 to 5 ft. Wave Detail: NE 5 ft at 6 seconds.

MON NIGHT
NE winds 15 to 20 kt. Seas 4 to 6 ft. A slight chance of showers and tstms in the evening, then showers likely with a chance of tstms after midnight.

TUE
SW winds 15 to 20 kt. Seas 5 to 7 ft. Showers with a slight chance of tstms.

TUE NIGHT
NW winds 15 to 20 kt. Seas 5 to 7 ft. A chance of showers.

WED
N winds 10 to 15 kt. Seas 3 to 4 ft.

WED NIGHT
N winds 5 to 10 kt. Seas 2 to 3 ft.

Winds and seas higher in and near tstms.

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AMZ352-291800
Waters from Edisto Beach SC to Savannah GA out 20 NM
1249 AM EST Sat Nov 29 2025

REST OF TONIGHT
NE winds 15 to 20 kt. Seas 2 to 3 ft. Wave Detail: NE 3 ft at 6 seconds.

SAT
NE winds 15 to 20 kt. Seas 3 to 4 ft. Wave Detail: NE 4 ft at 5 seconds.

SAT NIGHT
NE winds 15 to 20 kt, becoming E 10 to 15 kt after midnight. Seas 3 to 4 ft. Wave Detail: E 4 ft at 5 seconds.

SUN
NE winds 5 to 10 kt. Seas 3 ft. Wave Detail: E 3 ft at 6 seconds.

SUN NIGHT
N winds 5 kt, increasing to 10 to 15 kt after midnight. Seas 3 ft. Wave Detail: SE 3 ft at 7 seconds.

MON
NE winds 15 to 20 kt. Seas 3 to 4 ft, building to 4 to 5 ft in the afternoon. Wave Detail: NE 4 ft at 7 seconds, becoming NE 5 ft at 8 seconds.

MON NIGHT
NE winds 15 to 20 kt, becoming E 10 to 15 kt after midnight. Seas 4 to 5 ft. A slight chance of showers and tstms in the evening, then showers likely with a chance of tstms after midnight.

TUE
SW winds 15 to 20 kt. Seas 4 to 6 ft. Showers with a slight chance of tstms.

TUE NIGHT
NW winds 15 kt. Seas 4 to 6 ft. A slight chance of showers.

WED
N winds 10 to 15 kt. Seas 3 to 4 ft.

WED NIGHT
N winds 5 to 10 kt. Seas 2 ft.

Winds and seas higher in and near tstms.

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AMZ354-291800
Waters from Savannah GA to Altamaha Sound GA out 20 NM, including Grays Reef National Marine Sanctuary
1249 AM EST Sat Nov 29 2025

REST OF TONIGHT
NE winds 15 to 20 kt. Seas 3 to 4 ft. Wave Detail: NE 3 ft at 6 seconds.

SAT
NE winds 15 to 20 kt. Seas 3 to 4 ft. Wave Detail: NE 4 ft at 5 seconds.

SAT NIGHT
NE winds 15 to 20 kt, becoming E 10 to 15 kt after midnight. Seas 3 to 4 ft. Wave Detail: E 4 ft at 5 seconds.

SUN
NE winds 5 to 10 kt. Seas 3 ft. Wave Detail: E 3 ft at 6 seconds.

SUN NIGHT
NE winds 5 kt, becoming N 10 to 15 kt after midnight. Seas 3 ft. Wave Detail: SE 3 ft at 7 seconds.

MON
NE winds 15 to 20 kt. Seas 3 to 4 ft, building to 4 to 5 ft in the afternoon. Wave Detail: NE 4 ft at 7 seconds, becoming NE 5 ft at 6 seconds.

MON NIGHT
E winds 15 to 20 kt. Seas 4 to 5 ft. A slight chance of showers and tstms in the evening, then a chance of showers and tstms after midnight.

TUE
SW winds 15 to 20 kt. Seas 4 to 5 ft. Showers with a slight chance of tstms.

TUE NIGHT
NW winds 15 kt. Seas 4 to 5 ft. A slight chance of showers.

WED
N winds 10 to 15 kt. Seas 3 to 4 ft.

WED NIGHT
N winds 5 to 10 kt. Seas 2 to 3 ft.

Winds and seas higher in and near tstms.

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AMZ374-291800
Waters from Savannah GA to Altamaha Sound GA from 20 to 60 NM
1249 AM EST Sat Nov 29 2025

REST OF TONIGHT
NE winds 15 to 20 kt. Seas 3 to 4 ft. Wave Detail: NE 4 ft at 6 seconds.

SAT
NE winds 15 to 20 kt. Seas 4 to 5 ft. Wave Detail: NE 4 ft at 5 seconds.

SAT NIGHT
E winds 15 to 20 kt, becoming SE 10 to 15 kt after midnight. Seas 4 to 5 ft. Wave Detail: E 5 ft at 6 seconds. A slight chance of tstms. A slight chance of showers.

SUN
E winds 5 to 10 kt, becoming N in the afternoon. Seas 3 to 4 ft. Wave Detail: E 4 ft at 6 seconds.

SUN NIGHT
NE winds 5 to 10 kt, becoming N 10 to 15 kt after midnight. Seas 3 to 4 ft. Wave Detail: SE 4 ft at 7 seconds. A slight chance of showers.

MON
NE winds 15 to 20 kt. Seas 4 to 5 ft, building to 5 to 6 ft in the afternoon. Wave Detail: NE 5 ft at 8 seconds, becoming NE 5 ft at 6 seconds. A slight chance of showers in the afternoon.

MON NIGHT
NE winds 15 to 20 kt, becoming SE after midnight. Seas 5 to 6 ft. A chance of showers with a slight chance of tstms in the evening, then showers likely with a chance of tstms after midnight.

TUE
SW winds 15 to 20 kt. Seas 6 to 8 ft. Showers with a slight chance of tstms.

TUE NIGHT
NW winds 15 to 20 kt. Seas 5 to 7 ft. A chance of showers.

WED
N winds 10 to 15 kt. Seas 4 to 5 ft.

WED NIGHT
N winds 5 to 10 kt. Seas 2 to 3 ft.

Winds and seas higher in and near tstms.