National Weather Service Marine Forecast FZUS52 KCHS

FZUS52 KCHS 041740
CWFCHS

Coastal Waters Forecast
National Weather Service Charleston SC
1240 PM EST Wed Mar 4 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

AMZ300-050745
1240 PM EST Wed Mar 4 2026

.Synopsis for the coastal waters of south coastal South Carolina and north coastal Georgia... A broad area of high pressure will prevail over the waters through the rest of the week.

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AMZ330-050745
Charleston Harbor
1240 PM EST Wed Mar 4 2026

TODAY
N winds 5 kt, becoming SE this afternoon.

TONIGHT
S winds 5 kt. Patchy fog in the evening, then areas of fog after midnight. Vsby 1 NM or less.

THU
SE winds 5 kt. Widespread dense fog in the morning with vsby 1 NM or less.

THU NIGHT
S winds 5 kt. Patchy fog after midnight.

FRI
SE winds 5 kt.

FRI NIGHT
SE winds 5 kt.

SAT
S winds 5 to 10 kt.

SAT NIGHT
S winds 5 kt.

SUN
SW winds 5 to 10 kt. A chance of showers.

SUN NIGHT
SW winds 5 to 10 kt. A chance of showers.

Unless otherwise noted, waves 1 foot or less.

Charleston Harbor water temperature 56 degrees.

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AMZ350-050745
Waters from South Santee River to Edisto Beach SC out 20 NM
1240 PM EST Wed Mar 4 2026

TODAY
N winds 5 to 10 kt, becoming E this afternoon. Seas 3 to 4 ft. Wave Detail: E 4 ft at 8 seconds.

TONIGHT
S winds 5 kt. Seas 4 ft. Wave Detail: SE 4 ft at 9 seconds. Patchy fog in the evening, then areas of dense fog after midnight. Vsby 1 NM or less.

THU
SE winds 5 kt. Seas 3 to 4 ft. Wave Detail: SE 4 ft at 9 seconds. Widespread dense fog in the morning, then patchy dense fog in the afternoon. Vsby 1 NM or less.

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

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

FRI NIGHT
SE winds 5 kt. Seas 3 to 4 ft. Wave Detail: SE 4 ft at 10 seconds. A slight chance of showers after midnight.

SAT
S winds 5 to 10 kt. Seas 3 to 4 ft.

SAT NIGHT
S winds 5 to 10 kt. Seas 3 to 4 ft.

SUN
SW winds 10 to 15 kt. Seas 3 to 4 ft. A slight chance of showers.

SUN NIGHT
SW winds 10 kt. Seas 3 to 4 ft. A chance of showers.

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AMZ352-050745
Waters from Edisto Beach SC to Savannah GA out 20 NM
1240 PM EST Wed Mar 4 2026

TODAY
N winds 5 to 10 kt, becoming E this afternoon. Seas 3 to 4 ft. Wave Detail: E 4 ft at 8 seconds.

TONIGHT
SE winds 5 kt. Seas 3 to 4 ft. Wave Detail: E 4 ft at 9 seconds. Areas of dense fog in the evening, then widespread dense fog after midnight. Vsby 1 NM or less.

THU
E winds 5 kt. Seas 3 to 4 ft. Wave Detail: E 4 ft at 9 seconds. Widespread dense fog in the morning, then areas of dense fog in the afternoon. Vsby 1 NM or less.

THU NIGHT
SE winds 5 to 10 kt. Seas 3 to 4 ft. Wave Detail: SE 4 ft at 9 seconds. Patchy fog after midnight.

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

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

SAT
SE winds 5 to 10 kt. Seas 3 to 4 ft.

SAT NIGHT
S winds 5 to 10 kt. Seas 3 to 4 ft. A slight chance of showers.

SUN
S winds 10 kt. Seas 3 to 4 ft. A slight chance of showers.

SUN NIGHT
S winds 10 kt. Seas 3 to 4 ft. A chance of showers.

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AMZ354-050745
Waters from Savannah GA to Altamaha Sound GA out 20 NM, including Grays Reef National Marine Sanctuary
1240 PM EST Wed Mar 4 2026

TODAY
N winds 5 kt, becoming E late. Seas 3 to 4 ft. Wave Detail: E 4 ft at 8 seconds.

TONIGHT
E winds 5 kt. Seas 3 to 4 ft. Wave Detail: E 4 ft at 9 seconds. Areas of dense fog in the evening, then widespread dense fog after midnight. Vsby 1 NM or less.

THU
E winds 5 kt. Seas 3 to 4 ft. Wave Detail: E 4 ft at 9 seconds. Widespread dense fog in the morning with vsby 1 NM or less.

THU NIGHT
SE winds 5 to 10 kt. Seas 3 to 4 ft. Wave Detail: E 4 ft at 9 seconds. Patchy fog after midnight.

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

FRI NIGHT
SE winds 5 to 10 kt. Seas 3 to 4 ft. Wave Detail: E 3 ft at 10 seconds. A slight chance of showers.

SAT
SE winds 5 to 10 kt. Seas 3 ft.

SAT NIGHT
S winds 5 to 10 kt. Seas 3 ft. A slight chance of showers.

SUN
S winds 10 to 15 kt. Seas 3 ft. A slight chance of showers.

SUN NIGHT
S winds 10 to 15 kt. Seas 3 to 4 ft. A chance of showers.

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AMZ374-050745
Waters from Savannah GA to Altamaha Sound GA from 20 to 60 NM
1240 PM EST Wed Mar 4 2026

TODAY
NE winds 5 to 10 kt. Seas 4 to 5 ft. Wave Detail: E 5 ft at 8 seconds and NE 2 ft at 7 seconds.

TONIGHT
E winds 5 to 10 kt. Seas 4 to 5 ft. Wave Detail: E 5 ft at 9 seconds. Patchy dense fog. Vsby 1 NM or less.

THU
E winds 5 kt. Seas 4 to 5 ft. Wave Detail: E 5 ft at 9 seconds. Areas of fog in the morning, then patchy dense fog in the afternoon. Vsby 1 NM or less.

THU NIGHT
SE winds 5 to 10 kt. Seas 4 to 5 ft. Wave Detail: E 5 ft at 9 seconds.

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

FRI NIGHT
SE winds 5 to 10 kt. Seas 4 ft. Wave Detail: E 4 ft at 10 seconds. A slight chance of showers.

SAT
SE winds 5 to 10 kt. Seas 4 ft. A slight chance of showers.

SAT NIGHT
S winds 5 to 10 kt. Seas 4 ft. A slight chance of showers.

SUN
S winds 5 to 10 kt. Seas 4 ft. A slight chance of showers.

SUN NIGHT
S winds 10 to 15 kt. Seas 4 ft. A chance of showers.