FZUS52 KCHS 220625 CWFCHS Coastal Waters Forecast National Weather Service Charleston SC 224 AM EDT Sat Aug 22 2026 South Santee River SC to Altamaha Sound GA out 60 NM, including Charleston Harbor and Grays Reef National Marine Sanctuary AMZ300-222000- 224 AM EDT Sat Aug 22 2026 .Synopsis for the coastal waters of south coastal South Carolina and north coastal Georgia... Typical summertime conditions will persist across the local waters through the weekend and into next week. $$ AMZ340-222000- Charleston Harbor- 224 AM EDT Sat Aug 22 2026 .REST OF TONIGHT...SW winds 5 to 10 kt. Showers likely with a chance of tstms. .SAT...SW winds 5 to 10 kt. A chance of showers and tstms. .SAT NIGHT...SW winds 5 to 10 kt. A chance of showers and tstms, mainly in the evening. .SUN...SW winds 5 to 10 kt. .SUN NIGHT...SW winds 5 to 10 kt. .MON...SW winds 5 to 10 kt. A chance of showers with a slight chance of tstms in the afternoon. .MON NIGHT...SW winds 5 to 10 kt. A slight chance of tstms. A chance of showers, mainly in the evening. .TUE...SW winds 5 to 10 kt. A chance of showers and tstms. .TUE NIGHT...SW winds 5 to 10 kt. A chance of showers and tstms. .WED...SW winds 5 to 10 kt. Showers likely with a chance of tstms. .WED NIGHT...SW winds 5 to 10 kt. A chance of showers and tstms. Winds and waves higher in and near tstms. Unless otherwise noted, waves 1 foot or less. Charleston Harbor water temperature 88 degrees. $$ AMZ360-222000- Coastal waters from South Santee River to Edisto Beach SC out 20 NM- 224 AM EDT Sat Aug 22 2026 .REST OF TONIGHT...SW winds 10 to 15 kt with gusts to 20 kt. Seas 3 ft. Wave Detail: S 3 ft at 5 seconds and E 1 foot at 8 seconds. Showers and tstms likely, then showers with a chance of tstms late. .SAT...SW winds 10 to 15 kt with gusts to 20 kt. Seas 2 to 3 ft. Wave Detail: S 3 ft at 5 seconds and E 1 foot at 8 seconds. A chance of showers and tstms. .SAT NIGHT...SW winds 10 to 15 kt with gusts to 20 kt. Seas 3 ft. Wave Detail: S 3 ft at 5 seconds and E 1 foot at 9 seconds. A chance of showers and tstms. .SUN...SW winds 10 to 15 kt with gusts to 20 kt. Seas 2 to 3 ft. Wave Detail: S 3 ft at 5 seconds and E 1 foot at 9 seconds. A slight chance of showers and tstms in the morning. .SUN NIGHT...SW winds 10 to 15 kt. Seas 2 to 3 ft. Wave Detail: S 3 ft at 5 seconds and E 1 foot at 8 seconds. A chance of showers with a slight chance of tstms. .MON...SW winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: S 2 ft at 5 seconds and E 1 foot at 8 seconds. A slight chance of showers and tstms in the afternoon. .MON NIGHT...SW winds 10 to 15 kt, diminishing to 5 to 10 kt after midnight. Seas 2 to 3 ft. A slight chance of showers and tstms. .TUE...SW winds 5 to 10 kt. Seas 2 ft. A chance of showers and tstms. .TUE NIGHT...SW winds 5 to 10 kt. Seas 2 ft. Showers likely with a chance of tstms. .WED...SW winds 5 to 10 kt. Seas 2 ft. A chance of showers and tstms. .WED NIGHT...SW winds 10 to 15 kt. Seas 2 to 3 ft. Showers likely with a chance of tstms. Winds and seas higher in and near tstms. $$ AMZ362-222000- Coastal waters from Edisto Beach SC to Savannah GA out 20 NM- 224 AM EDT Sat Aug 22 2026 .REST OF TONIGHT...SW winds 10 to 15 kt with gusts to 20 kt. Seas 3 ft. Wave Detail: S 3 ft at 5 seconds and SE 1 foot at 8 seconds. A chance of tstms. Showers likely, then a chance of showers late. .SAT...SW winds 10 to 15 kt with gusts to 20 kt. Seas 2 to 3 ft. Wave Detail: S 3 ft at 5 seconds and SE 1 foot at 8 seconds. A slight chance of showers and tstms in the morning, then a chance of showers and tstms in the afternoon. .SAT NIGHT...SW winds 10 to 15 kt with gusts to 20 kt. Seas 2 to 3 ft. Wave Detail: S 3 ft at 4 seconds and SE 1 foot at 9 seconds. A chance of showers and tstms, mainly in the evening. .SUN...SW winds 10 to 15 kt. Seas 2 to 3 ft. Wave Detail: S 3 ft at 5 seconds and E 1 foot at 9 seconds. .SUN NIGHT...SW winds 10 to 15 kt. Seas 2 to 3 ft. Wave Detail: S 2 ft at 5 seconds and E 1 foot at 8 seconds. A slight chance of showers and tstms in the evening. .MON...W winds 5 to 10 kt, becoming SW in the afternoon. Seas 2 to 3 ft. Wave Detail: S 2 ft at 5 seconds and E 1 foot at 8 seconds. .MON NIGHT...SW winds 10 kt. Seas 2 ft. A slight chance of showers and tstms. .TUE...SW winds 5 to 10 kt. Seas 2 ft. A chance of showers and tstms. .TUE NIGHT...SW winds 10 kt. Seas 2 ft. A chance of showers and tstms. .WED...SW winds 5 to 10 kt. Seas 2 ft. A chance of showers and tstms. .WED NIGHT...S winds 10 to 15 kt. Seas 2 ft. A chance of showers and tstms. Winds and seas higher in and near tstms. $$ AMZ364-222000- Coastal waters from Savannah GA to Altamaha Sound GA out 20 nm, including Grays Reef National Marine Sanctuary- 224 AM EDT Sat Aug 22 2026 .REST OF TONIGHT...SW winds 10 to 15 kt. Seas 2 to 3 ft. Wave Detail: S 2 ft at 4 seconds and SE 1 foot at 8 seconds. A chance of showers and tstms, then a slight chance of showers and tstms late. .SAT...SW winds 10 to 15 kt. Seas 2 to 3 ft. Wave Detail: S 2 ft at 4 seconds and SE 1 foot at 8 seconds. A chance of showers and tstms in the afternoon. .SAT NIGHT...SW winds 10 to 15 kt. Seas 2 to 3 ft. Wave Detail: S 2 ft at 4 seconds and SE 1 foot at 9 seconds. A chance of showers and tstms in the evening. .SUN...W winds 10 to 15 kt, becoming S in the afternoon. Seas 2 to 3 ft. Wave Detail: S 2 ft at 5 seconds and SE 1 foot at 9 seconds. .SUN NIGHT...SW winds 10 to 15 kt. Seas 2 to 3 ft. Wave Detail: S 2 ft at 4 seconds and E 1 foot at 8 seconds. .MON...W winds 5 to 10 kt, becoming S in the afternoon. Seas 2 to 3 ft. Wave Detail: S 2 ft at 5 seconds and E 1 foot at 8 seconds. .MON NIGHT...SW winds 10 to 15 kt. Seas 2 to 3 ft. A slight chance of showers and tstms. .TUE...SW winds 5 to 10 kt. Seas 2 ft. A chance of showers and tstms. .TUE NIGHT...S winds 5 to 10 kt. Seas 2 ft. A chance of showers and tstms. .WED...SW winds 5 to 10 kt. Seas 2 ft. A chance of showers and tstms. .WED NIGHT...S winds 10 to 15 kt. Seas 2 ft. A chance of showers and tstms. Winds and seas higher in and near tstms. $$ AMZ380-222000- Waters from South Santee River SC to Edisto Beach SC extending from 20 to 60 NM- 224 AM EDT Sat Aug 22 2026 .REST OF TONIGHT...SW winds 15 kt with gusts to 20 kt. Seas 3 to 4 ft. Wave Detail: SW 3 ft at 5 seconds and E 2 ft at 9 seconds. Tstms likely. Showers. .SAT...SW winds 10 to 15 kt with gusts to 20 kt. Seas 3 to 4 ft. Wave Detail: SW 4 ft at 5 seconds and E 2 ft at 9 seconds. Showers and tstms likely, mainly in the morning. .SAT NIGHT...SW winds 15 kt with gusts to 20 kt. Seas 3 to 4 ft. Wave Detail: SW 4 ft at 5 seconds and E 1 foot at 9 seconds. A chance of showers and tstms in the evening, then showers likely with a chance of tstms after midnight. .SUN...SW winds 10 to 15 kt. Seas 3 to 4 ft. Wave Detail: SW 4 ft at 5 seconds and E 1 foot at 9 seconds. A chance of showers and tstms in the morning. .SUN NIGHT...SW winds 10 to 15 kt. Seas 3 ft. Wave Detail: SW 3 ft at 5 seconds and E 1 foot at 8 seconds. A chance of showers. A slight chance of tstms in the evening, then a chance of tstms after midnight. .MON...SW winds 10 kt. Seas 3 ft. Wave Detail: SW 3 ft at 5 seconds and E 1 foot at 8 seconds. A chance of showers and tstms, mainly in the morning. .MON NIGHT...SW winds 10 to 15 kt. Seas 2 to 3 ft. A slight chance of showers and tstms. .TUE...SW winds 5 to 10 kt. Seas 2 to 3 ft. A chance of showers and tstms. .TUE NIGHT...SW winds 10 kt. Seas 2 ft. Showers and tstms likely. .WED...SW winds 10 kt. Seas 2 ft. A chance of showers and tstms. .WED NIGHT...S winds 10 to 15 kt. Seas 2 to 3 ft. Showers likely with a chance of tstms. Winds and seas higher in and near tstms. $$ AMZ382-222000- Waters from Edisto Beach SC to Savannah GA extending from 20 to 60 NM- 224 AM EDT Sat Aug 22 2026 .REST OF TONIGHT...SW winds 15 kt with gusts to 20 kt. Seas 3 to 4 ft. Wave Detail: SW 3 ft at 5 seconds and SE 1 foot at 8 seconds. Showers and tstms likely, then a chance of showers and tstms late. .SAT...SW winds 10 to 15 kt. Seas 3 to 4 ft. Wave Detail: SW 3 ft at 5 seconds and SE 1 foot at 8 seconds. A slight chance of showers and tstms. .SAT NIGHT...SW winds 15 kt with gusts to 20 kt. Seas 3 to 4 ft. Wave Detail: SW 3 ft at 4 seconds and SE 1 foot at 9 seconds. A chance of showers and tstms. .SUN...SW winds 10 to 15 kt. Seas 3 to 4 ft, subsiding to 2 to 3 ft in the afternoon. Wave Detail: SW 3 ft at 5 seconds and SE 1 foot at 9 seconds. A chance of tstms with a slight chance of showers in the morning. .SUN NIGHT...SW winds 10 to 15 kt with gusts to 20 kt. Seas 3 ft. Wave Detail: SW 3 ft at 4 seconds and E 1 foot at 9 seconds. A slight chance of showers and tstms. .MON...SW winds 10 to 15 kt. Seas 2 to 3 ft. Wave Detail: S 3 ft at 5 seconds and SE 1 foot at 8 seconds. A slight chance of showers and tstms in the morning. .MON NIGHT...SW winds 10 to 15 kt. Seas 2 to 3 ft. A slight chance of showers and tstms. .TUE...SW winds 10 kt. Seas 2 to 3 ft. A chance of showers and tstms. .TUE NIGHT...SW winds 10 kt. Seas 2 to 3 ft. Tstms likely with a chance of showers. .WED...SW winds 10 kt. Seas 2 to 3 ft. A chance of showers and tstms. .WED NIGHT...S winds 10 to 15 kt. Seas 2 to 3 ft. A chance of showers and tstms. Winds and seas higher in and near tstms. $$ AMZ384-222000- Waters from Savannah GA to Altamaha Sound GA extending from 20 to 60 NM- 224 AM EDT Sat Aug 22 2026 .REST OF TONIGHT...SW winds 15 kt with gusts to 20 kt. Seas 3 ft. Wave Detail: SW 3 ft at 4 seconds and SE 1 foot at 8 seconds. A chance of tstms. A chance of showers. .SAT...SW winds 10 to 15 kt. Seas 2 to 3 ft. Wave Detail: SW 3 ft at 4 seconds and SE 1 foot at 8 seconds. A slight chance of showers and tstms in the morning. .SAT NIGHT...SW winds 15 kt with gusts to 20 kt. Seas 3 ft. Wave Detail: S 3 ft at 4 seconds and SE 1 foot at 9 seconds. A chance of showers and tstms, mainly in the evening. .SUN...SW winds 10 to 15 kt. Seas 2 to 3 ft. Wave Detail: SW 3 ft at 4 seconds and SE 1 foot at 9 seconds. .SUN NIGHT...SW winds 10 to 15 kt with gusts to 20 kt. Seas 2 to 3 ft. Wave Detail: S 3 ft at 4 seconds and E 1 foot at 8 seconds. .MON...W winds 10 to 15 kt, becoming SW 5 to 10 kt in the afternoon. Seas 2 to 3 ft. Wave Detail: S 3 ft at 5 seconds and E 1 foot at 8 seconds. .MON NIGHT...S winds 10 to 15 kt. Seas 2 to 3 ft. A slight chance of showers and tstms. .TUE...SW winds 5 to 10 kt. Seas 2 to 3 ft. A slight chance of showers and tstms. .TUE NIGHT...S winds 10 kt. Seas 2 to 3 ft. A chance of showers and tstms. .WED...SW winds 5 to 10 kt. Seas 2 to 3 ft. A chance of showers and tstms. .WED NIGHT...S winds 10 to 15 kt. Seas 2 to 3 ft. A chance of showers and tstms. Winds and seas higher in and near tstms. $$