Coastal Waters Forecast
Issued by NWS Charleston, SC
Issued by NWS Charleston, SC
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437 FZUS52 KCHS 080939 CWFCHS Coastal Waters Forecast National Weather Service Charleston SC 439 AM EST Sat Nov 8 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 AMZ300-082200- 439 AM EST Sat Nov 8 2025 .Synopsis for the coastal waters of south coastal South Carolina and north coastal Georgia... High pressure will extend across the region through the weekend. A strong cold front will cross the region by Sunday night bringing much colder conditions to the area next week. $$ AMZ330-082200- Charleston Harbor- 439 AM EST Sat Nov 8 2025 .TODAY...SW winds 5 to 10 kt. A slight chance of showers late this morning and early afternoon. A slight chance of tstms early this afternoon, then a chance of showers and tstms late. .TONIGHT...SW winds 5 to 10 kt. .SUN...SW winds 10 to 15 kt. A slight chance of showers in the afternoon. .SUN NIGHT...W winds 10 kt, becoming NW with gusts to 20 kt after midnight. .MON...NW winds 10 to 15 kt, becoming W 15 to 20 kt in the afternoon. Waves 1 to 2 ft. .MON NIGHT...NW winds 15 to 20 kt with gusts to 25 kt. Waves 1 to 2 ft. .TUE...NW winds 10 to 15 kt. .TUE NIGHT...W winds 5 to 10 kt. .WED...SW winds 10 to 15 kt. .WED NIGHT...W winds 10 to 15 kt. Winds and waves higher in and near tstms. Unless otherwise noted, waves 1 foot or less. Charleston Harbor water temperature 64 degrees. $$ AMZ350-082200- Waters from South Santee River to Edisto Beach SC out 20 NM- 439 AM EST Sat Nov 8 2025 .TODAY...SW winds 10 kt. Seas 2 to 3 ft. Wave Detail: SW 2 ft at 5 seconds and E 2 ft at 6 seconds. .TONIGHT...SW winds 10 to 15 kt. Seas 2 to 3 ft. Wave Detail: SW 3 ft at 5 seconds and SE 2 ft at 11 seconds. .SUN...SW winds 15 kt with gusts to 20 kt. Seas 3 to 4 ft. Wave Detail: S 3 ft at 7 seconds and SE 1 foot at 11 seconds. .SUN NIGHT...SW winds 15 to 20 kt, becoming NW after midnight. Seas 3 to 4 ft. Wave Detail: NW 3 ft at 4 seconds and S 3 ft at 6 seconds. A slight chance of showers and tstms in the evening. .MON...NW winds 15 to 20 kt, becoming W 20 to 25 kt with gusts to 30 kt in the afternoon. Seas 3 to 4 ft, building to 4 to 5 ft in the afternoon. Wave Detail: W 3 ft at 5 seconds and SE 1 foot at 7 seconds, becoming W 4 ft at 5 seconds and E 1 foot at 7 seconds. .MON NIGHT...NW winds 25 to 30 kt. Seas 4 to 6 ft. Wave Detail: W 5 ft at 5 seconds and NE 1 foot at 5 seconds. .TUE...NW winds 15 to 20 kt. Seas 3 to 4 ft. .TUE NIGHT...W winds 10 to 15 kt. Seas 2 ft. .WED...W winds 15 to 20 kt. Seas 3 to 4 ft. .WED NIGHT...W winds 15 to 20 kt. Seas 3 to 4 ft. Winds and seas higher in and near tstms. $$ AMZ352-082200- Waters from Edisto Beach SC to Savannah GA out 20 NM- 439 AM EST Sat Nov 8 2025 .TODAY...SW winds 5 to 10 kt, becoming S late. Seas 2 to 3 ft. Wave Detail: SW 2 ft at 4 seconds and E 2 ft at 6 seconds. .TONIGHT...SW winds 10 to 15 kt. Seas 2 to 3 ft. Wave Detail: S 3 ft at 4 seconds and SE 2 ft at 9 seconds. .SUN...SW winds 10 to 15 kt with gusts to 20 kt. Seas 3 ft. Wave Detail: SE 3 ft at 6 seconds and SE 1 foot at 11 seconds. A slight chance of showers in the afternoon. .SUN NIGHT...W winds 15 to 20 kt, becoming NW after midnight. Seas 3 to 4 ft. Wave Detail: NW 3 ft at 4 seconds and S 3 ft at 6 seconds. .MON...NW winds 20 to 25 kt with gusts to 30 kt. Seas 3 to 4 ft, building to 4 to 5 ft in the afternoon. Wave Detail: W 4 ft at 5 seconds and E 1 foot at 7 seconds, becoming W 4 ft at 4 seconds and E 1 foot at 7 seconds. .MON NIGHT...NW winds 25 to 30 kt, diminishing to 20 to 25 kt after midnight. Seas 4 to 6 ft. Wave Detail: W 5 ft at 5 seconds and E 1 foot at 6 seconds. .TUE...NW winds 15 to 20 kt. Seas 2 to 3 ft. .TUE NIGHT...W winds 10 to 15 kt. Seas 2 ft. .WED...W winds 10 to 15 kt. Seas 2 to 3 ft. .WED NIGHT...W winds 15 kt. Seas 2 to 3 ft. $$ AMZ354-082200- Waters from Savannah GA to Altamaha Sound GA out 20 NM, including Grays Reef National Marine Sanctuary- 439 AM EST Sat Nov 8 2025 .TODAY...SW winds 5 to 10 kt, becoming S this afternoon. Seas 2 to 3 ft. Wave Detail: NE 2 ft at 6 seconds and SE 2 ft at 9 seconds. .TONIGHT...SW winds 10 to 15 kt. Seas 2 to 3 ft. Wave Detail: S 2 ft at 3 seconds and E 2 ft at 6 seconds. .SUN...SW winds 10 to 15 kt. Seas 2 to 3 ft. Wave Detail: S 2 ft at 4 seconds and E 2 ft at 7 seconds. .SUN NIGHT...W winds 15 to 20 kt, becoming NW 20 to 25 kt after midnight. Seas 2 to 3 ft, building to 3 to 4 ft after midnight. Wave Detail: SW 2 ft at 4 seconds and SE 1 foot at 7 seconds, becoming NW 4 ft at 4 seconds and SE 2 ft at 6 seconds. .MON...NW winds 20 to 25 kt. Seas 3 to 4 ft. Wave Detail: NW 4 ft at 4 seconds and S 1 foot at 4 seconds. .MON NIGHT...NW winds 25 to 30 kt, diminishing to 20 to 25 kt after midnight. Seas 4 to 5 ft. Wave Detail: NW 5 ft at 4 seconds and E 1 foot at 7 seconds. .TUE...NW winds 15 to 20 kt. Seas 2 to 3 ft. .TUE NIGHT...W winds 5 to 10 kt. Seas 2 ft. .WED...W winds 10 to 15 kt. Seas 2 ft. .WED NIGHT...W winds 10 to 15 kt. Seas 2 ft. $$ AMZ374-082200- Waters from Savannah GA to Altamaha Sound GA from 20 to 60 NM- 439 AM EST Sat Nov 8 2025 .TODAY...SW winds 5 to 10 kt, becoming S late. Seas 3 to 4 ft. Wave Detail: S 2 ft at 4 seconds and NE 2 ft at 6 seconds. .TONIGHT...S winds 10 to 15 kt, becoming SW 15 to 20 kt after midnight. Seas 3 to 4 ft. Wave Detail: SW 3 ft at 5 seconds and NE 2 ft at 6 seconds. .SUN...SW winds 15 kt with gusts to 20 kt. Seas 3 to 4 ft. Wave Detail: SW 3 ft at 5 seconds and SE 2 ft at 7 seconds. .SUN NIGHT...SW winds 15 to 20 kt, becoming NW 20 to 25 kt after midnight. Seas 3 to 4 ft, building to 4 to 6 ft after midnight. Wave Detail: SW 3 ft at 5 seconds and SE 1 foot at 7 seconds, becoming W 5 ft at 5 seconds and S 3 ft at 6 seconds. .MON...NW winds 20 to 25 kt with gusts to 30 kt. Seas 5 to 6 ft, subsiding to 4 to 6 ft in the afternoon. Wave Detail: NW 6 ft at 5 seconds and SE 1 foot at 7 seconds. .MON NIGHT...NW winds 25 to 30 kt. Seas 6 to 8 ft. Wave Detail: NW 8 ft at 6 seconds and E 1 foot at 10 seconds. .TUE...NW winds 20 to 25 kt. Seas 4 to 6 ft. .TUE NIGHT...W winds 5 to 10 kt. Seas 2 to 3 ft. .WED...W winds 10 to 15 kt. Seas 2 to 3 ft. .WED NIGHT...W winds 15 kt. Seas 3 to 4 ft. $$