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FZUS52 KCHS 241103

CWFCHS



Coastal Waters Forecast

National Weather Service Charleston SC

703 AM EDT Thu Jul 24 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



AMZ300-250015-

703 AM EDT Thu Jul 24 2025



.Synopsis for the coastal waters of south coastal South Carolina

and north coastal Georgia...

A weak stationary front will remain over or near our area today,

then dissipate tonight. This weekend and early next week,

Atlantic High pressure will prevail with weak surface troughing

inland. 



$$



AMZ330-250015-

Charleston Harbor-

703 AM EDT Thu Jul 24 2025



.TODAY...S winds 10 kt. A chance of showers and tstms. 

.TONIGHT...S winds 5 to 10 kt. A slight chance of showers and

tstms in the evening. 

.FRI...SW winds 5 kt, increasing to 10 kt in the afternoon. A

slight chance of showers and tstms in the afternoon. 

.FRI NIGHT...SW winds 5 to 10 kt. A slight chance of showers and

tstms in the evening. 

.SAT...W winds 5 to 10 kt, becoming SW in the afternoon. 

.SAT NIGHT...SW winds 5 to 10 kt. 

.SUN...SW winds 5 to 10 kt. 

.SUN NIGHT...SW winds 5 to 10 kt. 

.MON...SW winds 5 to 10 kt. A slight chance of showers and tstms.

.MON NIGHT...SW winds 5 kt. A slight chance of showers and tstms.

 



Winds and waves higher in and near tstms.



Unless otherwise noted, waves 1 foot or less. 



Charleston Harbor water temperature 86 degrees. 



$$



AMZ350-250015-

Waters from South Santee River to Edisto Beach SC out 20 NM-

703 AM EDT Thu Jul 24 2025



.TODAY...S winds 10 kt. Seas 2 to 3 ft. Wave Detail: S 2 ft at 5 

seconds and NE 2 ft at 5 seconds. A chance of showers and tstms 

until late afternoon, then a slight chance of showers and tstms 

late. 

.TONIGHT...SW winds 10 kt. Seas 2 to 3 ft. Wave Detail: SE 2 ft

at 6 seconds. 

.FRI...SW winds 5 to 10 kt, increasing to 10 to 15 kt in the

afternoon. Seas 2 to 3 ft. Wave Detail: SE 2 ft at 7 seconds. 

.FRI NIGHT...SW winds 10 to 15 kt. Seas 2 to 3 ft. Wave Detail:

SW 2 ft at 3 seconds and SE 2 ft at 8 seconds. 

.SAT...SW winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: SW 2 ft

at 4 seconds and E 2 ft at 7 seconds. 

.SAT NIGHT...SW winds 10 kt. Seas 2 to 3 ft. Wave Detail: SW 2 ft

at 3 seconds and SE 2 ft at 8 seconds. 

.SUN...SW winds 5 to 10 kt. Seas 2 ft. 

.SUN NIGHT...SW winds 5 to 10 kt. Seas 2 ft. 

.MON...SW winds 5 to 10 kt. Seas 2 ft. A slight chance of showers

and tstms. 

.MON NIGHT...SW winds 5 to 10 kt. Seas 2 ft. A slight chance of

showers and tstms.  



Winds and seas higher in and near tstms.



$$



AMZ352-250015-

Waters from Edisto Beach SC to Savannah GA out 20 NM-

703 AM EDT Thu Jul 24 2025



.TODAY...S winds 10 kt. Seas 2 ft. Wave Detail: E 2 ft at 5 

seconds and SE 1 foot at 8 seconds. A chance of showers and tstms 

until late afternoon. 

.TONIGHT...S winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: SE

2 ft at 6 seconds. 

.FRI...SW winds 5 to 10 kt. Seas 2 ft. Wave Detail: E 2 ft at

7 seconds. 

.FRI NIGHT...SW winds 10 kt. Seas 2 to 3 ft. Wave Detail: SE 2 ft

at 8 seconds and E 1 foot at 7 seconds. 

.SAT...W winds 5 to 10 kt, becoming SW in the afternoon. Seas

2 to 3 ft. Wave Detail: SE 2 ft at 8 seconds and E 1 foot at

7 seconds. 

.SAT NIGHT...SW winds 5 to 10 kt. Seas 2 ft. Wave Detail: SE 2 ft

at 8 seconds. 

.SUN...W winds 5 to 10 kt. Seas 2 ft. 

.SUN NIGHT...SW winds 5 to 10 kt. Seas 2 ft. 

.MON...SW winds 5 to 10 kt. Seas 2 ft. A slight chance of showers

and tstms. 

.MON NIGHT...SW winds 5 kt. Seas 2 ft. A slight chance of showers

and tstms.  



Winds and seas higher in and near tstms.



$$



AMZ354-250015-

Waters from Savannah GA to Altamaha Sound GA out 20 NM, including

Grays Reef National Marine Sanctuary-

703 AM EDT Thu Jul 24 2025



.TODAY...S winds 10 kt. Seas 2 ft. Wave Detail: SE 2 ft at 5 

seconds and NE 2 ft at 5 seconds. A chance of showers and tstms 

early this morning, then a slight chance of showers and tstms late

this morning. 

.TONIGHT...S winds 10 kt. Seas 2 to 3 ft. Wave Detail: SE 2 ft at

6 seconds. 

.FRI...S winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: E 2 ft at

7 seconds. 

.FRI NIGHT...S winds 10 kt. Seas 2 to 3 ft. Wave Detail: E 2 ft

at 7 seconds and SW 1 foot at 3 seconds. 

.SAT...W winds 5 to 10 kt, becoming S in the afternoon. Seas

2 ft. Wave Detail: SE 2 ft at 8 seconds and SW 1 foot at

3 seconds. 

.SAT NIGHT...SW winds 10 kt. Seas 2 ft. Wave Detail: E 2 ft at

7 seconds. 

.SUN...W winds 5 to 10 kt. Seas 2 ft. 

.SUN NIGHT...SW winds 5 to 10 kt. Seas 2 ft. 

.MON...SW winds 5 to 10 kt. Seas 2 ft. 

.MON NIGHT...S winds 5 to 10 kt. Seas 2 ft. A slight chance of

showers and tstms.  



Winds and seas higher in and near tstms.



$$



AMZ374-250015-

Waters from Savannah GA to Altamaha Sound GA from 20 to 60 NM-

703 AM EDT Thu Jul 24 2025



.TODAY...S winds 10 kt. Seas 2 to 3 ft. Wave Detail: SE 2 ft at 6

seconds. A chance of showers and tstms early this morning, then a

slight chance of showers and tstms late this morning and early 

afternoon. 

.TONIGHT...S winds 10 kt. Seas 3 ft. Wave Detail: SE 2 ft at

7 seconds. 

.FRI...S winds 5 to 10 kt. Seas 3 ft. Wave Detail: E 2 ft at

7 seconds. 

.FRI NIGHT...SW winds 10 kt. Seas 3 ft. Wave Detail: SE 3 ft at

8 seconds and NE 2 ft at 7 seconds. 

.SAT...SW winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: SE 3 ft

at 8 seconds and NE 1 foot at 7 seconds. 

.SAT NIGHT...SW winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: E

2 ft at 7 seconds and SW 1 foot at 3 seconds. 

.SUN...W winds 5 to 10 kt. Seas 2 to 3 ft. 

.SUN NIGHT...SW winds 5 to 10 kt. Seas 2 ft. 

.MON...SW winds 5 to 10 kt. Seas 2 ft. 

.MON NIGHT...S winds 5 to 10 kt. Seas 2 ft. A slight chance of

showers and tstms.  



Winds and seas higher in and near tstms.



$$