Station List

National Weather Service Marine Forecast FZUS52 KCHS

FZUS52 KCHS 201731
CWFCHS

Coastal Waters Forecast
National Weather Service Charleston SC
1230 PM EST Tue Jan 20 2026

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

AMZ300-210700
1230 PM EST Tue Jan 20 2026

.Synopsis for the coastal waters of south coastal South Carolina and north coastal Georgia... High pressure and quiet conditions are expected to prevail across the local waters through the end of the week. A strong cold front is expected to move through the waters Friday night, bringing strengthening winds and increasing seas for the weekend.

AMZ330-210700
Charleston Harbor
1230 PM EST Tue Jan 20 2026

THIS AFTERNOON
NW winds 5 kt.

TONIGHT
NE winds 5 kt.

WED
NE winds 5 kt.

WED NIGHT
NE winds 5 kt in the evening, becoming light and variable.

THU
N winds 5 kt, becoming E in the afternoon.

THU NIGHT
E winds 5 kt.

FRI
N winds 5 kt. A slight chance of showers.

FRI NIGHT
NE winds 10 to 15 kt. A chance of showers.

SAT
NE winds 15 kt. Rain likely.

SAT NIGHT
NE winds 15 kt. Rain.

Unless otherwise noted, waves 1 foot or less.

Charleston Harbor water temperature 52 degrees.

AMZ350-210700
Waters from South Santee River to Edisto Beach SC out 20 NM
1230 PM EST Tue Jan 20 2026

THIS AFTERNOON
NW winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: W 2 ft at 4 seconds and SE 2 ft at 9 seconds.

TONIGHT
N winds 5 to 10 kt, becoming NE after midnight. Seas 2 to 3 ft. Wave Detail: NE 2 ft at 3 seconds and SE 2 ft at 9 seconds.

WED
NE winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: SE 3 ft at 9 seconds and NE 2 ft at 4 seconds.

WED NIGHT
N winds 5 kt. Seas 3 ft. Wave Detail: SE 3 ft at 10 seconds and E 2 ft at 4 seconds.

THU
N winds 5 kt, becoming NE in the afternoon. Seas 2 to 3 ft. Wave Detail: E 3 ft at 10 seconds.

THU NIGHT
E winds 5 kt. Seas 2 to 3 ft. Wave Detail: SE 3 ft at 10 seconds.

FRI
N winds 5 to 10 kt. Seas 2 to 3 ft. A slight chance of showers.

FRI NIGHT
NE winds 20 to 25 kt. Seas 4 to 6 ft. A chance of showers.

SAT
NE winds 25 to 30 kt. Seas 7 to 9 ft. Rain likely.

SAT NIGHT
NE winds 25 to 30 kt. Seas 8 to 10 ft. Rain.

AMZ352-210700
Waters from Edisto Beach SC to Savannah GA out 20 NM
1230 PM EST Tue Jan 20 2026

THIS AFTERNOON
NW winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: NW 2 ft at 3 seconds and SE 2 ft at 8 seconds.

TONIGHT
N winds 5 to 10 kt, becoming NE after midnight. Seas 2 to 3 ft. Wave Detail: SE 2 ft at 9 seconds and N 1 foot at 3 seconds.

WED
NE winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: NE 2 ft at 3 seconds and SE 2 ft at 9 seconds.

WED NIGHT
NE winds 5 kt. Seas 2 to 3 ft. Wave Detail: SE 3 ft at 9 seconds and E 2 ft at 4 seconds.

THU
NE winds 5 kt. Seas 2 to 3 ft. Wave Detail: E 3 ft at 10 seconds.

THU NIGHT
E winds 5 kt. Seas 2 to 3 ft. Wave Detail: SE 3 ft at 10 seconds.

FRI
N winds 5 kt. Seas 2 to 3 ft. A slight chance of showers.

FRI NIGHT
NE winds 15 to 20 kt. Seas 4 to 5 ft. A chance of showers.

SAT
NE winds 20 to 25 kt. Seas 7 to 9 ft. Rain likely.

SAT NIGHT
NE winds 20 to 25 kt. Seas 8 to 10 ft. Rain.

AMZ354-210700
Waters from Savannah GA to Altamaha Sound GA out 20 NM, including Grays Reef National Marine Sanctuary
1230 PM EST Tue Jan 20 2026

THIS AFTERNOON
NW winds 10 to 15 kt. Seas 2 to 3 ft. Wave Detail: NW 2 ft at 3 seconds and SE 2 ft at 8 seconds.

TONIGHT
N winds 5 to 10 kt, becoming NE after midnight. Seas 2 to 3 ft. Wave Detail: N 2 ft at 3 seconds and SE 2 ft at 9 seconds.

WED
NE winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: NE 2 ft at 3 seconds and SE 2 ft at 9 seconds.

WED NIGHT
NE winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: E 3 ft at 9 seconds and NE 2 ft at 4 seconds.

THU
NE winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: E 3 ft at 10 seconds.

THU NIGHT
E winds 5 kt. Seas 2 to 3 ft. Wave Detail: E 3 ft at 10 seconds.

FRI
N winds 5 to 10 kt. Seas 2 to 3 ft. A slight chance of showers.

FRI NIGHT
NE winds 15 to 20 kt. Seas 4 to 5 ft. A slight chance of showers.

SAT
NE winds 20 to 25 kt. Seas 6 to 8 ft. A chance of rain.

SAT NIGHT
NE winds 20 to 25 kt. Seas 7 to 9 ft. Rain likely.

AMZ374-210700
Waters from Savannah GA to Altamaha Sound GA from 20 to 60 NM
1230 PM EST Tue Jan 20 2026

THIS AFTERNOON
NW winds 10 to 15 kt. Seas 3 to 4 ft. Wave Detail: NW 3 ft at 4 seconds and E 2 ft at 9 seconds.

TONIGHT
N winds 10 kt, becoming NE after midnight. Seas 3 to 4 ft. Wave Detail: SE 3 ft at 9 seconds and N 2 ft at 4 seconds.

WED
NE winds 5 to 10 kt. Seas 3 to 4 ft. Wave Detail: SE 3 ft at 9 seconds and NE 2 ft at 4 seconds.

WED NIGHT
NE winds 5 to 10 kt. Seas 3 to 4 ft. Wave Detail: E 3 ft at 9 seconds and NE 2 ft at 5 seconds.

THU
NE winds 5 to 10 kt. Seas 3 to 4 ft. Wave Detail: SE 4 ft at 10 seconds and NE 2 ft at 6 seconds.

THU NIGHT
E winds 5 to 10 kt. Seas 3 to 4 ft. Wave Detail: E 4 ft at 10 seconds.

FRI
N winds 5 to 10 kt. Seas 3 to 4 ft. A slight chance of showers.

FRI NIGHT
NE winds 15 to 20 kt. Seas 4 to 6 ft. A slight chance of showers.

SAT
NE winds 20 to 25 kt. Seas 9 to 11 ft. A chance of rain.

SAT NIGHT
NE winds 20 to 25 kt. Seas 9 to 13 ft. Rain likely.