Coastal Waters Forecast
Issued by NWS Charleston, SC
Issued by NWS Charleston, SC
792 FZUS52 KCHS 150939 CWFCHS Coastal Waters Forecast National Weather Service Charleston SC 539 AM EDT Mon Jun 15 2026 South Santee River SC to Altamaha Sound GA out 60 NM, including Charleston Harbor and Grays Reef National Marine Sanctuary AMZ300-152300- 539 AM EDT Mon Jun 15 2026 .Synopsis for the coastal waters of south coastal South Carolina and north coastal Georgia... Atlantic high pressure will prevail for the upcoming week. $$ AMZ340-152300- Charleston Harbor- 539 AM EDT Mon Jun 15 2026 .TODAY...W winds 10 kt. .TONIGHT...SW winds 10 kt. .TUE...W winds 5 to 10 kt. A slight chance of showers and tstms in the afternoon. .TUE NIGHT...W winds 10 kt. A chance of tstms in the evening. A chance of showers. .WED...W winds 10 kt, becoming SW in the afternoon. A chance of showers. A slight chance of tstms in the morning, then a chance of tstms in the afternoon. .WED NIGHT...SW winds 10 to 15 kt with gusts to 20 kt. A chance of showers and tstms in the evening. .THU...SW winds 10 to 15 kt. A slight chance of showers and tstms. .THU NIGHT...SW winds 10 to 15 kt. A slight chance of showers and tstms. .FRI...SW winds 10 to 15 kt. Showers likely with a chance of tstms. .FRI NIGHT...SW winds 10 to 15 kt. A chance of showers and tstms. Winds and waves higher in and near tstms. Unless otherwise noted, waves 1 foot or less. Charleston Harbor water temperature 83 degrees. $$ AMZ360-152300- Coastal waters from South Santee River to Edisto Beach SC out 20 NM- 539 AM EDT Mon Jun 15 2026 .TODAY...SW winds 10 to 15 kt with gusts to 20 kt. Seas 3 to 4 ft. Wave Detail: SW 4 ft at 6 seconds and E 1 foot at 9 seconds. .TONIGHT...SW winds 15 to 20 kt. Seas 3 to 4 ft. Wave Detail: S 3 ft at 5 seconds and E 1 foot at 9 seconds. A slight chance of showers and tstms after midnight. .TUE...W winds 10 to 15 kt with gusts to 20 kt. Seas 2 to 3 ft. Wave Detail: SW 3 ft at 5 seconds and E 1 foot at 9 seconds. A slight chance of showers and tstms. .TUE NIGHT...W winds 15 to 20 kt with gusts to 25 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 tstms. A chance of showers in the evening, then showers likely after midnight. .WED...SW winds 15 to 20 kt with gusts to 25 kt. Seas 3 to 4 ft, building to 4 to 5 ft in the afternoon. Wave Detail: SW 3 ft at 5 seconds and SE 1 foot at 8 seconds, becoming SW 4 ft at 5 seconds and SE 1 foot at 8 seconds. A slight chance of tstms. Showers likely, mainly in the morning. .WED NIGHT...SW winds 15 to 20 kt with gusts to 25 kt. Seas 4 to 5 ft, subsiding to 3 to 4 ft after midnight. Wave Detail: S 4 ft at 7 seconds, becoming SW 4 ft at 5 seconds and SE 1 foot at 8 seconds. A slight chance of showers and tstms in the evening. .THU...SW winds 15 to 20 kt. Seas 4 to 5 ft. .THU NIGHT...SW winds 15 to 20 kt. Seas 4 to 5 ft. A slight chance of showers and tstms. .FRI...SW winds 20 to 25 kt. Seas 4 to 6 ft. A chance of showers and tstms. .FRI NIGHT...SW winds 20 to 25 kt. Seas 4 to 6 ft. Showers likely with a chance of tstms. Winds and seas higher in and near tstms. $$ AMZ362-152300- Coastal waters from Edisto Beach SC to Savannah GA out 20 NM- 539 AM EDT Mon Jun 15 2026 .TODAY...SW winds 10 to 15 kt. Seas 2 to 3 ft. Wave Detail: SW 3 ft at 5 seconds and E 1 foot at 9 seconds. .TONIGHT...SW winds 15 kt with gusts to 20 kt. Seas 2 to 3 ft. Wave Detail: S 3 ft at 5 seconds and E 1 foot at 9 seconds. A slight chance of showers and tstms. .TUE...W winds 10 to 15 kt with gusts to 20 kt. Seas 2 to 3 ft. Wave Detail: SW 3 ft at 5 seconds and SE 1 foot at 9 seconds. A slight chance of tstms. A slight chance of showers in the morning, then a chance of showers in the afternoon. .TUE NIGHT...W winds 15 kt with gusts to 20 kt. Seas 2 to 3 ft. Wave Detail: SW 3 ft at 4 seconds and SE 1 foot at 8 seconds. Showers likely. A chance of tstms, mainly in the evening. .WED...SW winds 15 to 20 kt with gusts to 25 kt. Seas 2 to 3 ft, building to 3 to 4 ft in the afternoon. Wave Detail: SW 3 ft at 4 seconds and SE 1 foot at 8 seconds, becoming SW 3 ft at 5 seconds and SE 1 foot at 8 seconds. Showers likely with a slight chance of tstms. .WED NIGHT...SW winds 15 to 20 kt with gusts to 25 kt. Seas 3 to 4 ft. Wave Detail: SW 3 ft at 5 seconds and SE 1 foot at 8 seconds. A chance of showers and tstms in the evening. .THU...SW winds 15 to 20 kt. Seas 3 to 4 ft. A slight chance of showers and tstms. .THU NIGHT...SW winds 15 to 20 kt. Seas 3 to 4 ft. A slight chance of showers and tstms. .FRI...SW winds 15 to 20 kt. Seas 4 to 5 ft. A chance of showers and tstms. .FRI NIGHT...SW winds 15 to 20 kt. Seas 4 to 5 ft. A chance of showers and tstms. Winds and seas higher in and near tstms. $$ AMZ364-152300- Coastal waters from Savannah GA to Altamaha Sound GA out 20 nm, including Grays Reef National Marine Sanctuary- 539 AM EDT Mon Jun 15 2026 .TODAY...SW winds 10 to 15 kt with gusts to 20 kt. Seas 2 to 3 ft. Wave Detail: SW 3 ft at 4 seconds and E 1 foot at 9 seconds. A slight chance of showers early this afternoon. A chance of showers and tstms late. .TONIGHT...SW winds 10 to 15 kt with gusts to 20 kt. Seas 2 to 3 ft. Wave Detail: SW 2 ft at 4 seconds and E 1 foot at 9 seconds. A chance of showers and tstms, mainly in the evening. .TUE...W winds 10 to 15 kt. Seas 2 to 3 ft. Wave Detail: SW 2 ft at 4 seconds and SE 1 foot at 9 seconds. A slight chance of showers in the morning, then a chance of showers and tstms in the afternoon. .TUE NIGHT...W winds 10 to 15 kt. Seas 2 ft. Wave Detail: W 2 ft at 3 seconds and SE 1 foot at 8 seconds. A chance of tstms in the evening. Showers likely. .WED...SW winds 15 kt with gusts to 20 kt. Seas 2 to 3 ft. Wave Detail: SW 3 ft at 4 seconds and SE 1 foot at 8 seconds. Showers likely. A slight chance of tstms in the morning, then a chance of tstms in the afternoon. .WED NIGHT...SW winds 10 to 15 kt with gusts to 20 kt. Seas 2 to 3 ft. Wave Detail: SW 2 ft at 4 seconds and SE 1 foot at 8 seconds. A chance of showers and tstms in the evening. .THU...SW winds 10 to 15 kt. Seas 2 to 3 ft. A slight chance of showers and tstms. .THU NIGHT...SW winds 15 kt. Seas 3 ft. A slight chance of showers and tstms. .FRI...SW winds 15 to 20 kt. Seas 3 to 4 ft. A chance of showers and tstms. .FRI NIGHT...SW winds 15 to 20 kt. Seas 3 to 4 ft. A chance of showers and tstms. Winds and seas higher in and near tstms. $$ AMZ380-152300- Waters from South Santee River SC to Edisto Beach SC extending from 20 to 60 NM- 539 AM EDT Mon Jun 15 2026 .TODAY...W winds 15 to 20 kt with gusts to 25 kt. Seas 4 to 5 ft. Wave Detail: SW 5 ft at 6 seconds and E 1 foot at 9 seconds. .TONIGHT...SW winds 15 to 20 kt with gusts to 25 kt. Seas 4 ft. Wave Detail: SW 4 ft at 6 seconds and E 1 foot at 8 seconds. A chance of showers and tstms after midnight. .TUE...W winds 10 to 15 kt with gusts to 20 kt. Seas 3 to 4 ft. Wave Detail: SW 4 ft at 6 seconds and E 1 foot at 8 seconds. A chance of showers and tstms, mainly in the morning. .TUE NIGHT...W winds 15 to 20 kt with gusts to 25 kt. Seas 3 to 4 ft, building to 4 to 5 ft after midnight. Wave Detail: SW 4 ft at 5 seconds and SE 1 foot at 8 seconds. A chance of tstms. A chance of showers in the evening, then showers after midnight. .WED...SW winds 15 to 20 kt with gusts to 25 kt. Seas 4 to 5 ft. Wave Detail: SW 5 ft at 6 seconds and SE 2 ft at 8 seconds. Showers with a chance of tstms in the morning, then showers likely with a slight chance of tstms in the afternoon. .WED NIGHT...SW winds 15 to 20 kt with gusts to 25 kt. Seas 4 to 5 ft. Wave Detail: SW 5 ft at 6 seconds and SE 2 ft at 8 seconds. A slight chance of showers and tstms. .THU...SW winds 15 to 20 kt. Seas 4 to 5 ft. .THU NIGHT...SW winds 20 kt. Seas 5 ft. A slight chance of showers and tstms. .FRI...SW winds 20 to 25 kt. Seas 5 to 7 ft. A chance of showers with a slight chance of tstms. .FRI NIGHT...SW winds 20 to 25 kt. Seas 5 to 7 ft. Showers likely with a chance of tstms. Winds and seas higher in and near tstms. $$ AMZ382-152300- Waters from Edisto Beach SC to Savannah GA extending from 20 to 60 NM- 539 AM EDT Mon Jun 15 2026 .TODAY...W winds 15 to 20 kt, becoming SW 10 to 15 kt late. Seas 4 to 5 ft, subsiding to 3 to 4 ft this afternoon. Wave Detail: SW 4 ft at 5 seconds and E 1 foot at 9 seconds. .TONIGHT...SW winds 15 to 20 kt with gusts to 25 kt. Seas 3 to 4 ft. Wave Detail: SW 4 ft at 5 seconds and E 1 foot at 9 seconds. A chance of tstms. A slight chance of showers in the evening, then a chance of showers after midnight. .TUE...W winds 15 to 20 kt. Seas 3 to 4 ft. Wave Detail: SW 4 ft at 5 seconds and SE 1 foot at 8 seconds. A chance of showers and tstms, mainly in the morning. .TUE NIGHT...W winds 15 to 20 kt with gusts to 25 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 tstms. A chance of showers in the evening, then showers after midnight. .WED...SW winds 15 to 20 kt with gusts to 25 kt. Seas 3 to 4 ft, building to 4 to 5 ft in the afternoon. Wave Detail: SW 4 ft at 5 seconds and SE 2 ft at 8 seconds. Showers likely. A chance of tstms, mainly in the morning. .WED NIGHT...SW winds 15 to 20 kt with gusts to 25 kt. Seas 4 to 5 ft, subsiding to 3 to 4 ft after midnight. Wave Detail: SW 4 ft at 5 seconds and SE 2 ft at 8 seconds. A chance of showers with a slight chance of tstms in the evening. .THU...SW winds 15 to 20 kt. Seas 3 to 4 ft. .THU NIGHT...SW winds 15 to 20 kt. Seas 4 to 5 ft. A slight chance of showers and tstms. .FRI...SW winds 20 to 25 kt. Seas 4 to 6 ft. A chance of showers with a slight chance of tstms. .FRI NIGHT...SW winds 20 to 25 kt. Seas 4 to 6 ft. Showers likely with a chance of tstms. Winds and seas higher in and near tstms. $$ AMZ384-152300- Waters from Savannah GA to Altamaha Sound GA extending from 20 to 60 NM- 539 AM EDT Mon Jun 15 2026 .TODAY...W winds 15 to 20 kt with gusts to 25 kt, becoming SW 10 to 15 kt with gusts to 20 kt this afternoon. Seas 3 to 4 ft, subsiding to 2 to 3 ft this afternoon. Wave Detail: SW 3 ft at 5 seconds and SE 1 foot at 9 seconds. A slight chance of showers and tstms late. .TONIGHT...SW winds 15 to 20 kt. Seas 2 to 3 ft, building to 3 to 4 ft after midnight. Wave Detail: SW 3 ft at 4 seconds and SE 1 foot at 9 seconds. A chance of showers and tstms. .TUE...W winds 10 to 15 kt. Seas 3 to 4 ft, subsiding to 2 to 3 ft in the afternoon. Wave Detail: SW 3 ft at 5 seconds and SE 1 foot at 9 seconds, becoming SW 3 ft at 4 seconds and SE 1 foot at 9 seconds. A slight chance of tstms. A slight chance of showers in the morning, then a chance of showers in the afternoon. .TUE NIGHT...SW winds 10 to 15 kt with gusts to 20 kt. Seas 2 to 3 ft. Wave Detail: SW 3 ft at 4 seconds and SE 1 foot at 8 seconds. Showers likely with a slight chance of tstms. .WED...SW winds 15 to 20 kt. Seas 3 to 4 ft. Wave Detail: SW 3 ft at 4 seconds and SE 1 foot at 8 seconds. Showers likely with a slight chance of tstms. .WED NIGHT...SW winds 15 kt with gusts to 20 kt. Seas 2 to 3 ft. Wave Detail: SW 3 ft at 4 seconds and SE 2 ft at 8 seconds. A chance of showers and tstms in the evening. .THU...SW winds 10 to 15 kt. Seas 3 ft. .THU NIGHT...SW winds 15 to 20 kt. Seas 3 to 4 ft. .FRI...SW winds 15 to 20 kt. Seas 3 to 4 ft. A chance of showers and tstms. .FRI NIGHT...SW winds 15 to 20 kt. Seas 3 to 4 ft. A chance of showers and tstms. Winds and seas higher in and near tstms. $$