Station List

National Weather Service Marine Forecast FZUS52 KCHS

FZUS52 KCHS 211730
CWFCHS

Coastal Waters Forecast
National Weather Service Charleston SC
1230 PM EST Wed Jan 21 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

AMZ300-220700
1230 PM EST Wed Jan 21 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 and into early next week.

AMZ330-220700
Charleston Harbor
1230 PM EST Wed Jan 21 2026

THIS AFTERNOON
E winds 5 kt.

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

THU
Variable winds 5 kt.

THU NIGHT
SE winds 5 kt, becoming NE after midnight.

FRI
NE winds 5 kt.

FRI NIGHT
NE winds 5 to 10 kt, increasing to 10 to 15 kt with gusts to 20 kt after midnight. A chance of rain.

SAT
NE winds 15 kt. A chance of rain.

SAT NIGHT
NE winds 10 to 15 kt. Rain likely.

SUN
NW winds 10 kt. Showers.

SUN NIGHT
W winds 10 kt. Showers.

Unless otherwise noted, waves 1 foot or less.

Charleston Harbor water temperature 51 degrees.

AMZ350-220700
Waters from South Santee River to Edisto Beach SC out 20 NM
1230 PM EST Wed Jan 21 2026

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

TONIGHT
NE winds 5 kt, becoming NW after midnight. Seas 3 ft. Wave Detail: SE 3 ft at 10 seconds and E 2 ft at 4 seconds.

THU
NW winds 5 kt, becoming SE in the afternoon. Seas 3 ft. Wave Detail: SE 3 ft at 10 seconds.

THU NIGHT
SE winds 5 kt, becoming NE after midnight. Seas 3 to 4 ft. Wave Detail: SE 4 ft at 10 seconds.

FRI
NE winds 5 to 10 kt. Seas 3 to 4 ft. Wave Detail: SE 4 ft at 10 seconds. A slight chance of showers in the afternoon.

FRI NIGHT
NE winds 10 to 15 kt, increasing to 20 to 25 kt after midnight. Seas 3 to 4 ft, building to 4 to 6 ft after midnight. Wave Detail: SE 4 ft at 10 seconds and NE 1 foot at 3 seconds, becoming NE 4 ft at 5 seconds and SE 4 ft at 10 seconds. A chance of rain.

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.

SUN
NW winds 15 kt. Seas 6 to 8 ft. Showers.

SUN NIGHT
W winds 15 to 20 kt. Seas 4 to 6 ft. Rain.

AMZ352-220700
Waters from Edisto Beach SC to Savannah GA out 20 NM
1230 PM EST Wed Jan 21 2026

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

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

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

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

FRI
NE winds 5 to 10 kt. Seas 3 to 4 ft. Wave Detail: SE 3 ft at 10 seconds.

FRI NIGHT
NE winds 5 to 10 kt, increasing to 15 to 20 kt after midnight. Seas 3 to 4 ft, building to 4 to 5 ft after midnight. Wave Detail: SE 3 ft at 10 seconds, becoming NE 4 ft at 4 seconds and SE 3 ft at 10 seconds. A chance of rain.

SAT
NE winds 20 to 25 kt. Seas 5 to 7 ft. A chance of rain.

SAT NIGHT
NE winds 20 to 25 kt. Seas 6 to 8 ft. Rain likely.

SUN
SW winds 15 kt. Seas 5 to 7 ft. Showers likely.

SUN NIGHT
W winds 15 to 20 kt. Seas 4 to 6 ft. Rain.

AMZ354-220700
Waters from Savannah GA to Altamaha Sound GA out 20 NM, including Grays Reef National Marine Sanctuary
1230 PM EST Wed Jan 21 2026

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

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

THU
NE winds 5 kt. Seas 2 to 3 ft. Wave Detail: E 3 ft at 10 seconds and NE 1 foot at 5 seconds.

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

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

FRI NIGHT
NE winds 5 to 10 kt, increasing to 15 to 20 kt after midnight. Seas 3 ft, building to 4 to 5 ft after midnight. Wave Detail: E 3 ft at 10 seconds, becoming NE 4 ft at 4 seconds and E 3 ft at 10 seconds. A slight chance of rain.

SAT
NE winds 20 to 25 kt. Seas 5 to 7 ft. A chance of rain.

SAT NIGHT
NE winds 20 to 25 kt. Seas 5 to 7 ft. A chance of rain.

SUN
S winds 15 kt. Seas 5 to 6 ft. Showers likely.

SUN NIGHT
W winds 15 to 20 kt. Seas 4 to 6 ft. Rain.

AMZ374-220700
Waters from Savannah GA to Altamaha Sound GA from 20 to 60 NM
1230 PM EST Wed Jan 21 2026

THIS AFTERNOON
NE winds 5 to 10 kt. Seas 3 ft. Wave Detail: E 3 ft at 9 seconds and NE 2 ft at 5 seconds.

TONIGHT
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
NE winds 5 to 10 kt. Seas 4 ft. Wave Detail: E 4 ft at 10 seconds.

FRI
NE winds 5 to 10 kt. Seas 4 ft. Wave Detail: E 4 ft at 10 seconds.

FRI NIGHT
NE winds 5 to 10 kt, increasing to 15 to 20 kt with gusts to 25 kt after midnight. Seas 4 to 5 ft. Wave Detail: NE 4 ft at 4 seconds and E 4 ft at 10 seconds. A slight chance of rain in the evening, then a chance of rain after midnight.

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

SAT NIGHT
NE winds 15 to 20 kt. Seas 6 to 8 ft. A chance of rain.

SUN
SW winds 15 to 20 kt. Seas 6 to 8 ft. A chance of showers.

SUN NIGHT
SW winds 15 to 20 kt. Seas 6 to 7 ft. Rain.