FZUS52 KCHS 231155 CWFCHS Coastal Waters Forecast National Weather Service Charleston SC 755 AM EDT Sun Aug 23 2026 South Santee River SC to Altamaha Sound GA out 60 NM, including Charleston Harbor and Grays Reef National Marine Sanctuary AMZ300-240100- 755 AM EDT Sun Aug 23 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. $$ AMZ340-240100- Charleston Harbor- 755 AM EDT Sun Aug 23 2026 .TODAY...SW winds 5 to 10 kt, becoming S late. A slight chance of showers and tstms this afternoon. .TONIGHT...SW winds 5 to 10 kt. A slight chance of showers and tstms in the evening. .MON...SW winds 5 to 10 kt. A chance of showers and tstms in the afternoon. .MON NIGHT...SW winds 5 to 10 kt. A chance of showers and tstms. .TUE...SW winds 5 to 10 kt. A chance of showers. A slight chance of tstms in the morning, then a chance of tstms in the afternoon. .TUE NIGHT...S winds 5 to 10 kt. Showers likely with a chance of tstms. .WED...SW winds 5 to 10 kt. Showers likely with a chance of tstms. .WED NIGHT...SW winds 5 to 10 kt. A chance of showers and tstms. .THU...SW winds 5 to 10 kt. Showers and tstms likely. .THU NIGHT...SW winds 5 to 10 kt. Showers likely with a chance of tstms. Winds and waves higher in and near tstms. Unless otherwise noted, waves 1 foot or less. Charleston Harbor water temperature 86 degrees. $$ AMZ360-240100- Coastal waters from South Santee River to Edisto Beach SC out 20 NM- 755 AM EDT Sun Aug 23 2026 .TODAY...W winds 10 to 15 kt, becoming SW 5 to 10 kt early this afternoon, then increasing to 10 to 15 kt late. 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 early this morning. .TONIGHT...SW winds 10 to 15 kt, diminishing to 5 to 10 kt after midnight. 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. .MON...SW winds 5 to 10 kt. Seas 2 ft. Wave Detail: S 2 ft at 4 seconds and E 1 foot at 8 seconds. A slight chance of showers and tstms. .MON NIGHT...SW winds 10 to 15 kt. Seas 2 to 3 ft. Wave Detail: SW 2 ft at 5 seconds and E 1 foot at 12 seconds. A chance of showers and tstms. .TUE...SW winds 5 to 10 kt. Seas 2 ft. Wave Detail: S 2 ft at 5 seconds and E 1 foot at 11 seconds. A chance of showers and tstms. .TUE NIGHT...SW winds 5 to 10 kt. Seas 2 ft. Wave Detail: SW 2 ft at 5 seconds and SE 1 foot at 11 seconds. A chance of tstms. Showers. .WED...SW winds 5 to 10 kt. Seas 2 ft. Showers likely with a chance of tstms. .WED NIGHT...SW winds 10 to 15 kt. Seas 2 to 3 ft. Showers likely with a chance of tstms. .THU...SW winds 10 to 15 kt. Seas 2 to 3 ft. A chance of showers and tstms. .THU NIGHT...SW winds 10 to 15 kt. Seas 3 ft. Showers likely with a chance of tstms. Winds and seas higher in and near tstms. $$ AMZ362-240100- Coastal waters from Edisto Beach SC to Savannah GA out 20 NM- 755 AM EDT Sun Aug 23 2026 .TODAY...SW winds 5 to 10 kt, becoming S late. Seas 2 to 3 ft. Wave Detail: S 2 ft at 5 seconds and E 1 foot at 9 seconds. A slight chance of showers and tstms early this morning. .TONIGHT...SW winds 10 to 15 kt. Seas 2 ft. Wave Detail: S 2 ft at 4 seconds and E 1 foot at 8 seconds. .MON...SW winds 5 to 10 kt. Seas 2 ft. Wave Detail: S 2 ft at 5 seconds and E 1 foot at 8 seconds. .MON NIGHT...SW winds 10 kt. Seas 2 ft. Wave Detail: S 2 ft at 5 seconds and SE 1 foot at 8 seconds. A chance of showers and tstms. .TUE...SW winds 5 to 10 kt. Seas 2 ft. Wave Detail: S 2 ft at 4 seconds and SE 1 foot at 11 seconds. A slight chance of showers and tstms in the morning, then a chance of showers and tstms inthe afternoon. .TUE NIGHT...SW winds 5 to 10 kt. Seas 2 ft. Wave Detail: S 2 ft at 5 seconds and SE 1 foot at 11 seconds. A chance of tstms. A chance of showers in the evening, then showers likely after midnight. .WED...SW winds 5 to 10 kt. Seas 2 ft. A chance of showers and tstms. .WED NIGHT...SW winds 10 to 15 kt. Seas 2 ft. Showers likely with a chance of tstms. .THU...SW winds 10 to 15 kt. Seas 2 ft. A chance of showers and tstms. .THU NIGHT...SW winds 10 to 15 kt. Seas 2 to 3 ft. A chance of showers and tstms. Winds and seas higher in and near tstms. $$ AMZ364-240100- Coastal waters from Savannah GA to Altamaha Sound GA out 20 nm, including Grays Reef National Marine Sanctuary- 755 AM EDT Sun Aug 23 2026 .TODAY...SW winds 5 to 10 kt, becoming S late. Seas 2 ft. Wave Detail: S 2 ft at 4 seconds and E 1 foot at 9 seconds. .TONIGHT...SW winds 10 to 15 kt. Seas 2 ft. Wave Detail: S 2 ft at 4 seconds and E 1 foot at 8 seconds. .MON...SW winds 5 to 10 kt, becoming S in the afternoon. Seas 2 ft. Wave Detail: S 2 ft at 4 seconds and E 1 foot at 8 seconds. A chance of showers and tstms in the afternoon. .MON NIGHT...SW winds 5 to 10 kt. Seas 2 ft. Wave Detail: S 2 ft at 4 seconds and SE 1 foot at 8 seconds. A chance of showers and tstms. .TUE...SW winds 5 to 10 kt. Seas 2 ft. Wave Detail: S 2 ft at 4 seconds and SE 1 foot at 11 seconds. A slight chance of showers and tstms in the morning, then showers likely with a chance of tstms in the afternoon. .TUE NIGHT...SW winds 5 to 10 kt. Seas 2 ft. Wave Detail: S 2 ft at 5 seconds and E 1 foot at 11 seconds. 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. .THU...SW winds 10 to 15 kt. Seas 2 ft. A chance of showers and tstms. .THU NIGHT...SW winds 10 to 15 kt. Seas 2 to 3 ft. A chance of showers and tstms. Winds and seas higher in and near tstms. $$ AMZ380-240100- Waters from South Santee River SC to Edisto Beach SC extending from 20 to 60 NM- 755 AM EDT Sun Aug 23 2026 .TODAY...SW winds 10 to 15 kt. Seas 3 to 4 ft. Wave Detail: SW 3 ft at 5 seconds and E 1 foot at 9 seconds. A chance of showers and tstms this morning, then a slight chance of showers and tstms early this afternoon. .TONIGHT...SW winds 10 kt. Seas 2 to 3 ft. Wave Detail: SW 2 ft at 5 seconds and E 1 foot at 8 seconds. A chance of tstms with a slight chance of showers after midnight. .MON...SW winds 10 kt. Seas 2 to 3 ft. Wave Detail: SW 2 ft at 4 seconds and E 2 ft at 12 seconds. A slight chance of showers. A chance of tstms, mainly in the morning. .MON NIGHT...SW winds 10 to 15 kt. Seas 2 to 3 ft. Wave Detail: SW 2 ft at 5 seconds and SE 2 ft at 11 seconds. A chance of tstms. A chance of showers in the evening, then showers likely after midnight. .TUE...SW winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: SW 2 ft at 5 seconds and E 2 ft at 11 seconds. A chance of tstms. Showers likely, mainly in the morning. .TUE NIGHT...SW winds 10 kt. Seas 2 ft. Wave Detail: SW 2 ft at 5 seconds and SE 1 foot at 11 seconds. A chance of tstms. Showers. .WED...SW winds 10 kt. Seas 2 ft. Showers likely with a chance of tstms. .WED NIGHT...SW winds 10 to 15 kt. Seas 2 to 3 ft. Showers likely with a chance of tstms. .THU...SW winds 10 to 15 kt. Seas 3 ft. Showers likely with a chance of tstms. .THU NIGHT...SW winds 10 to 15 kt. Seas 3 ft. Showers likely with a chance of tstms. Winds and seas higher in and near tstms. $$ AMZ382-240100- Waters from Edisto Beach SC to Savannah GA extending from 20 to 60 NM- 755 AM EDT Sun Aug 23 2026 .TODAY...SW winds 10 to 15 kt. Seas 3 to 4 ft, subsiding to 2 to 3 ft this afternoon. Wave Detail: SW 3 ft at 5 seconds and E 1 foot at 9 seconds, becomingSW 2 ft at 4 seconds and E 1 foot at 8 seconds. A chance of showers and tstms early this morning, then a slight chance of showers and tstms late this morning. .TONIGHT...SW winds 10 to 15 kt. Seas 2 to 3 ft. Wave Detail: SW 2 ft at 4 seconds and E 1 foot at 8 seconds. .MON...SW winds 10 kt. Seas 2 to 3 ft. Wave Detail: SW 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. Wave Detail: SW 2 ft at 5 seconds and SE 2 ft at 12 seconds. A chance of showers and tstms. .TUE...SW winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: SW 2 ft at 4 seconds and SE 2 ft at 11 seconds. A chance of showers. A chance of tstms, mainly in the morning. .TUE NIGHT...SW winds 10 kt. Seas 2 ft. Wave Detail: S 2 ft at 5 seconds and SE 2 ft at 11 seconds. A chance of tstms. A chance of showers in the evening, then showers after midnight. .WED...SW winds 10 kt. Seas 2 to 3 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. .THU...SW winds 10 to 15 kt. Seas 2 to 3 ft. A chance of showers and tstms. .THU NIGHT...SW winds 10 to 15 kt. Seas 3 ft. A chance of showers and tstms. Winds and seas higher in and near tstms. $$ AMZ384-240100- Waters from Savannah GA to Altamaha Sound GA extending from 20 to 60 NM- 755 AM EDT Sun Aug 23 2026 .TODAY...SW winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: S 3 ft at 4 seconds and SE 1 foot at 9 seconds. A slight chance of showers and tstms this morning. .TONIGHT...SW winds 10 to 15 kt. Seas 2 to 3 ft. Wave Detail: S 2 ft at 4 seconds and E 1 foot at 8 seconds. .MON...SW winds 10 to 15 kt. Seas 2 to 3 ft. Wave Detail: S 2 ft at 4 seconds and SE 2 ft at 8 seconds. .MON NIGHT...SW winds 10 to 15 kt. Seas 2 to 3 ft. Wave Detail: S 2 ft at 4 seconds and SE 2 ft at 12 seconds. A slight chance of showers and tstms in the evening, then a chance of showers and tstms after midnight. .TUE...SW winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: S 2 ft at 4 seconds and E 1 foot at 7 seconds. A chance of showers with a slight chance of tstms. .TUE NIGHT...SW winds 10 kt. Seas 2 ft. Wave Detail: S 2 ft at 5 seconds and E 1 foot at 11 seconds. A chance of tstms. A chance of showers in the evening, then showers likely after midnight. .WED...SW winds 5 to 10 kt. Seas 2 ft. A chance of showers and tstms. .WED NIGHT...S winds 10 to 15 kt. Seas 2 to 3 ft. Showers likely with a chance of tstms. .THU...SW winds 10 to 15 kt. Seas 2 to 3 ft. A chance of showers and tstms. .THU NIGHT...SW winds 10 to 15 kt. Seas 2 to 3 ft. A chance of showers and tstms. Winds and seas higher in and near tstms. $$