National Weather Service Marine Forecast FZUS52 KCHS

FZUS52 KCHS 041917
CWFCHS

Coastal Waters Forecast
National Weather Service Charleston SC
317 PM EDT Fri Apr 4 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

AMZ300-050830
317 PM EDT Fri Apr 4 2025

.Synopsis for the coastal waters of south coastal South Carolina and north coastal Georgia... Strong high pressure centered over the Atlantic will prevail into this weekend. A cold front will push offshore Monday with high pressure prevailing for much of next week.

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AMZ330-050830
Charleston Harbor
317 PM EDT Fri Apr 4 2025

TONIGHT
S winds 10 to 15 kt with gusts to 20 kt, diminishing to 10 kt this evening, then diminishing to 5 kt after midnight.

SAT
S winds 5 to 10 kt, increasing to 10 to 15 kt with gusts to 20 kt in the afternoon.

SAT NIGHT
S winds 10 to 15 kt.

SUN
SW winds 10 to 15 kt, becoming S 15 to 20 kt in the afternoon. Waves 1 to 2 ft.

SUN NIGHT
S winds 15 to 20 kt with gusts to 25 kt. Waves 1 to 2 ft.

MON
SW winds 10 to 15 kt with gusts to 20 kt. A chance of showers with a slight chance of tstms in the morning, then showers with a chance of tstms in the afternoon.

MON NIGHT
W winds 10 kt, becoming NW after midnight. Showers with a chance of tstms in the evening, then showers likely with a slight chance of tstms after midnight.

TUE
N winds 10 kt.

TUE NIGHT
NE winds 10 kt.

WED
NE winds 10 kt.

WED NIGHT
NE winds 5 to 10 kt.

Winds and waves higher in and near tstms.

Unless otherwise noted, waves 1 foot or less.

Charleston Harbor water temperature 68 degrees.

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AMZ350-050830
Waters from South Santee River to Edisto Beach SC out 20 NM
317 PM EDT Fri Apr 4 2025

TONIGHT
S winds 10 kt. Seas 3 to 4 ft. Wave Detail: SE 4 ft at 8 seconds.

SAT
S winds 5 to 10 kt. Seas 3 to 4 ft. Wave Detail: SE 4 ft at 8 seconds.

SAT NIGHT
S winds 10 to 15 kt with gusts to 20 kt. Seas 3 to 4 ft, building to 4 to 5 ft after midnight. Wave Detail: SE 4 ft at 8 seconds.

SUN
SW winds 15 to 20 kt with gusts to 25 kt. Seas 4 to 5 ft. Wave Detail: S 5 ft at 8 seconds.

SUN NIGHT
S winds 15 to 20 kt with gusts to 25 kt. Seas 4 to 6 ft, building to 5 to 7 ft after midnight. Wave Detail: S 6 ft at 7 seconds, becoming S 6 ft at 8 seconds.

MON
SW winds 20 to 25 kt with gusts to 30 kt. Seas 5 to 7 ft, subsiding to 4 to 6 ft in the afternoon. Wave Detail: S 6 ft at 8 seconds. A chance of showers with a slight chance of tstms in the morning, then showers with a chance of tstms in the afternoon.

MON NIGHT
W winds 15 to 20 kt, becoming NW after midnight. Seas 4 to 5 ft. A chance of tstms. Showers.

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

TUE NIGHT
NE winds 15 to 20 kt. Seas 3 to 4 ft.

WED
NE winds 15 to 20 kt. Seas 4 to 6 ft.

WED NIGHT
NE winds 10 to 15 kt. Seas 5 to 6 ft.

Winds and seas higher in and near tstms.

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AMZ352-050830
Waters from Edisto Beach SC to Savannah GA out 20 NM
317 PM EDT Fri Apr 4 2025

TONIGHT
S winds 10 kt. Seas 3 to 4 ft. Wave Detail: SE 4 ft at 8 seconds.

SAT
S winds 5 to 10 kt. Seas 3 to 4 ft. Wave Detail: SE 4 ft at 8 seconds.

SAT NIGHT
S winds 10 to 15 kt with gusts to 20 kt. Seas 3 to 4 ft, building to 4 to 5 ft after midnight. Wave Detail: SE 4 ft at 8 seconds, becoming SE 5 ft at 8 seconds.

SUN
S winds 15 to 20 kt with gusts to 25 kt. Seas 4 to 5 ft. Wave Detail: SE 5 ft at 8 seconds.

SUN NIGHT
S winds 15 to 20 kt with gusts to 25 kt. Seas 4 to 6 ft. Wave Detail: S 6 ft at 6 seconds.

MON
SW winds 15 to 20 kt with gusts to 25 kt. Seas 4 to 6 ft. Wave Detail: S 6 ft at 8 seconds. A chance of showers with a slight chance of tstms in the morning, then showers with a chance of tstms in the afternoon.

MON NIGHT
W winds 10 to 15 kt with gusts to 20 kt. Seas 4 to 5 ft, subsiding to 3 to 4 ft after midnight. A chance of tstms. Showers.

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

TUE NIGHT
NE winds 15 to 20 kt. Seas 2 to 3 ft.

WED
NE winds 15 to 20 kt. Seas 4 to 6 ft.

WED NIGHT
NE winds 10 to 15 kt. Seas 5 to 7 ft.

Winds and seas higher in and near tstms.

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AMZ354-050830
Waters from Savannah GA to Altamaha Sound GA out 20 NM, including Grays Reef National Marine Sanctuary
317 PM EDT Fri Apr 4 2025

TONIGHT
SE winds 10 kt. Seas 2 to 3 ft, building to 3 to 4 ft after midnight. Wave Detail: SE 3 ft at 8 seconds, becoming SE 4 ft at 8 seconds.

SAT
S winds 5 to 10 kt. Seas 3 to 4 ft. Wave Detail: SE 4 ft at 8 seconds.

SAT NIGHT
S winds 10 to 15 kt with gusts to 20 kt. Seas 3 to 4 ft, building to 4 to 5 ft after midnight. Wave Detail: SE 4 ft at 8 seconds.

SUN
S winds 15 to 20 kt with gusts to 25 kt. Seas 4 to 5 ft. Wave Detail: SE 5 ft at 8 seconds.

SUN NIGHT
S winds 15 to 20 kt with gusts to 25 kt. Seas 4 to 5 ft. Wave Detail: SE 5 ft at 7 seconds.

MON
SW winds 15 to 20 kt with gusts to 25 kt. Seas 4 to 5 ft. Wave Detail: SE 5 ft at 8 seconds. A chance of showers with a slight chance of tstms in the morning, then showers with a chance of tstms in the afternoon.

MON NIGHT
W winds 10 to 15 kt with gusts to 20 kt. Seas 4 to 5 ft, subsiding to 3 to 4 ft after midnight. A chance of tstms. Showers.

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

TUE NIGHT
NE winds 15 to 20 kt. Seas 2 to 3 ft.

WED
NE winds 15 to 20 kt. Seas 4 to 6 ft.

WED NIGHT
NE winds 10 to 15 kt. Seas 4 to 6 ft.

Winds and seas higher in and near tstms.

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AMZ374-050830
Waters from Savannah GA to Altamaha Sound GA from 20 to 60 NM
317 PM EDT Fri Apr 4 2025

SMALL CRAFT ADVISORY IN EFFECT FROM SATURDAY EVENING THROUGH MONDAY EVENING

TONIGHT
SE winds 10 to 15 kt. Seas 4 to 5 ft. Wave Detail: SE 4 ft at 8 seconds.

SAT
S winds 5 to 10 kt. Seas 4 to 5 ft. Wave Detail: SE 4 ft at 8 seconds.

SAT NIGHT
S winds 10 to 15 kt with gusts to 20 kt. Seas 4 to 5 ft, building to 5 to 6 ft after midnight. Wave Detail: SE 5 ft at 8 seconds, becoming SE 5 ft at 9 seconds.

SUN
S winds 15 to 20 kt with gusts to 25 kt. Seas 5 to 6 ft. Wave Detail: SE 6 ft at 9 seconds.

SUN NIGHT
S winds 15 to 20 kt with gusts to 25 kt. Seas 5 to 7 ft, building to 6 to 7 ft after midnight. Wave Detail: S 6 ft at 6 seconds and SE 6 ft at 9 seconds, becoming S 6 ft at 7 seconds.

MON
SW winds 15 to 20 kt with gusts to 25 kt. Seas 5 to 7 ft, subsiding to 5 to 6 ft in the afternoon. Wave Detail: SE 6 ft at 8 seconds, becoming S 6 ft at 7 seconds. A chance of showers with a slight chance of tstms in the morning, then showers likely with a chance of tstms in the afternoon.

MON NIGHT
W winds 15 to 20 kt with gusts to 25 kt. Seas 4 to 5 ft. Showers with a chance of tstms.

TUE
N winds 15 to 20 kt. Seas 4 to 5 ft.

TUE NIGHT
NE winds 15 to 20 kt. Seas 3 to 4 ft.

WED
NE winds 15 to 20 kt. Seas 5 to 7 ft.

WED NIGHT
NE winds 15 to 20 kt. Seas 6 to 8 ft. A slight chance of showers.

Winds and seas higher in and near tstms.