


Coastal Waters Forecast
Issued by NWS Charleston, SC
Issued by NWS Charleston, SC
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517 FZUS52 KCHS 050601 CWFCHS Coastal Waters Forecast National Weather Service Charleston SC 201 AM EDT Sun Oct 5 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 AMZ300-051830- 201 AM EDT Sun Oct 5 2025 .Synopsis for the coastal waters of south coastal South Carolina and north coastal Georgia... Strong high pressure will extend across the region through the weekend and into early next week. A strong cold front will likely cross the area later next week. $$ AMZ330-051830- Charleston Harbor- 201 AM EDT Sun Oct 5 2025 .REST OF TONIGHT...E winds 10 to 15 kt. A slight chance of showers and tstms, then a chance of showers and tstms late. .SUN...E winds 10 to 15 kt with gusts to 20 kt. A chance of showers and tstms, mainly in the morning. .SUN NIGHT...E winds 10 to 15 kt. A slight chance of showers and tstms. .MON...NE winds 10 to 15 kt with gusts to 20 kt. A slight chance of showers and tstms. .MON NIGHT...E winds 10 to 15 kt. .TUE...E winds 10 to 15 kt. .TUE NIGHT...E winds 5 to 10 kt. .WED...E winds 5 to 10 kt. .WED NIGHT...E winds 5 to 10 kt. A slight chance of showers. .THU...NE winds 20 to 25 kt. Waves 2 to 3 ft. A chance of showers with a slight chance of tstms. .THU NIGHT...NE winds 20 to 25 kt. Waves 2 to 3 ft. A slight chance of showers. Winds and waves higher in and near tstms. Unless otherwise noted, waves 1 foot or less. Charleston Harbor water temperature 76 degrees. $$ AMZ350-051830- Waters from South Santee River to Edisto Beach SC out 20 NM- 201 AM EDT Sun Oct 5 2025 ...SMALL CRAFT ADVISORY IN EFFECT THROUGH TUESDAY AFTERNOON... .REST OF TONIGHT...E winds 15 to 20 kt. Seas 4 to 6 ft. Wave Detail: E 6 ft at 7 seconds and E 2 ft at 13 seconds. A chance of showers and tstms. .SUN...E winds 15 to 20 kt with gusts to 25 kt. Seas 5 to 6 ft. Wave Detail: E 6 ft at 8 seconds and E 2 ft at 13 seconds. A chance of showers and tstms in the morning, then a slight chance of showers in the afternoon. .SUN NIGHT...E winds 15 to 20 kt. Seas 5 to 6 ft. Wave Detail: E 6 ft at 8 seconds and E 2 ft at 13 seconds. A slight chance of showers and tstms. .MON...E winds 15 to 20 kt with gusts to 25 kt. Seas 5 to 6 ft. Wave Detail: E 6 ft at 8 seconds and E 1 foot at 13 seconds. A slight chance of showers and tstms. .MON NIGHT...E winds 15 to 20 kt, diminishing to 10 to 15 kt after midnight. Seas 5 to 6 ft. Wave Detail: E 6 ft at 8 seconds. A slight chance of showers and tstms in the evening. .TUE...E winds 10 to 15 kt. Seas 5 to 6 ft, subsiding to 4 to 5 ft in the afternoon. Wave Detail: E 5 ft at 8 seconds. .TUE NIGHT...E winds 10 to 15 kt, diminishing to 5 to 10 kt after midnight. Seas 4 to 5 ft. .WED...E winds 5 to 10 kt. Seas 4 to 5 ft. .WED NIGHT...E winds 10 to 15 kt. Seas 3 to 4 ft. A slight chance of showers. .THU...NE winds 25 to 30 kt. Seas 5 to 7 ft. A chance of showers with a slight chance of tstms. .THU NIGHT...NE winds 25 to 30 kt. Seas 7 to 9 ft. A chance of showers. Winds and seas higher in and near tstms. $$ AMZ352-051830- Waters from Edisto Beach SC to Savannah GA out 20 NM- 201 AM EDT Sun Oct 5 2025 ...SMALL CRAFT ADVISORY IN EFFECT THROUGH TUESDAY AFTERNOON... .REST OF TONIGHT...E winds 15 kt with gusts to 20 kt. Seas 4 to 6 ft. Wave Detail: E 6 ft at 7 seconds. A chance of tstms. A chance of showers, then showers likely late. .SUN...E winds 15 kt with gusts to 25 kt. Seas 5 to 6 ft. Wave Detail: E 6 ft at 8 seconds and E 1 foot at 14 seconds. A chance of showers and tstms, mainly in the morning. .SUN NIGHT...E winds 15 to 20 kt. Seas 5 to 6 ft. Wave Detail: E 6 ft at 8 seconds and E 1 foot at 13 seconds. A chance of showers and tstms, mainly in the evening. .MON...E winds 15 to 20 kt with gusts to 25 kt. Seas 5 to 6 ft. Wave Detail: E 6 ft at 8 seconds and E 1 foot at 14 seconds. A slight chance of tstms in the morning. A slight chance of showers. .MON NIGHT...E winds 15 to 20 kt with gusts to 25 kt. Seas 6 to 7 ft, subsiding to 5 to 6 ft after midnight. Wave Detail: E 7 ft at 8 seconds, becoming E 6 ft at 8 seconds. A slight chance of showers in the evening. .TUE...E winds 10 to 15 kt with gusts to 20 kt. Seas 5 to 6 ft, subsiding to 4 to 5 ft in the afternoon. Wave Detail: E 6 ft at 8 seconds, becoming E 5 ft at 8 seconds. .TUE NIGHT...E winds 10 to 15 kt, diminishing to 5 to 10 kt after midnight. Seas 4 to 5 ft. .WED...NE winds 5 to 10 kt. Seas 3 to 4 ft. .WED NIGHT...E winds 10 to 15 kt. Seas 3 to 4 ft. A slight chance of showers. .THU...NE winds 25 to 30 kt. Seas 4 to 6 ft. A slight chance of showers and tstms. .THU NIGHT...NE winds 25 to 30 kt. Seas 7 to 9 ft. A slight chance of showers. Winds and seas higher in and near tstms. $$ AMZ354-051830- Waters from Savannah GA to Altamaha Sound GA out 20 NM, including Grays Reef National Marine Sanctuary- 201 AM EDT Sun Oct 5 2025 ...SMALL CRAFT ADVISORY IN EFFECT THROUGH TUESDAY AFTERNOON... .REST OF TONIGHT...E winds 15 kt with gusts to 20 kt. Seas 4 to 6 ft. Wave Detail: E 5 ft at 8 seconds and E 5 ft at 12 seconds. A chance of showers and tstms, then a chance of showers with a slight chance of tstms late. .SUN...E winds 15 kt with gusts to 20 kt. Seas 5 to 6 ft. Wave Detail: E 6 ft at 8 seconds and E 2 ft at 13 seconds. A slight chance of tstms. A chance of showers. .SUN NIGHT...E winds 15 to 20 kt. Seas 5 to 6 ft. Wave Detail: E 6 ft at 8 seconds and E 2 ft at 13 seconds. A chance of showers and tstms in the evening, then a chance of showers with a slight chance of tstms after midnight. .MON...E winds 15 to 20 kt with gusts to 25 kt. Seas 5 to 6 ft, building to 5 to 7 ft in the afternoon. Wave Detail: E 6 ft at 8 seconds and E 2 ft at 14 seconds. A slight chance of tstms in the morning. A chance of showers. .MON NIGHT...E winds 15 to 20 kt with gusts to 25 kt. Seas 6 to 7 ft, subsiding to 5 to 7 ft after midnight. Wave Detail: E 7 ft at 9 seconds and E 2 ft at 13 seconds, becoming E 7 ft at 9 seconds. A slight chance of showers. A slight chance of tstms after midnight. .TUE...E winds 15 kt. Seas 5 to 6 ft. Wave Detail: E 6 ft at 9 seconds. A slight chance of tstms in the morning. A slight chance of showers. .TUE NIGHT...E winds 10 to 15 kt. Seas 4 to 5 ft. .WED...NE winds 10 to 15 kt. Seas 4 to 5 ft. .WED NIGHT...E winds 10 to 15 kt. Seas 3 to 4 ft. A slight chance of showers. .THU...NE winds 25 to 30 kt. Seas 5 to 7 ft. A slight chance of showers and tstms. .THU NIGHT...NE winds 25 to 30 kt. Seas 6 to 8 ft. A chance of showers with a slight chance of tstms. Winds and seas higher in and near tstms. $$ AMZ374-051830- Waters from Savannah GA to Altamaha Sound GA from 20 to 60 NM- 201 AM EDT Sun Oct 5 2025 ...SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE TUESDAY NIGHT... .REST OF TONIGHT...E winds 15 to 20 kt with gusts to 25 kt. Seas 6 to 8 ft. Wave Detail: E 7 ft at 8 seconds and E 7 ft at 11 seconds. A chance of showers and tstms. .SUN...E winds 15 to 20 kt with gusts to 25 kt. Seas 6 to 8 ft. Wave Detail: E 7 ft at 8 seconds and E 3 ft at 13 seconds. A chance of showers and tstms. .SUN NIGHT...E winds 15 to 20 kt with gusts to 25 kt. Seas 6 to 8 ft, building to 7 to 8 ft after midnight. Wave Detail: E 8 ft at 8 seconds and E 3 ft at 12 seconds, becoming E 8 ft at 8 seconds and E 3 ft at 13 seconds. A chance of showers. A chance of tstms, mainly in the evening. .MON...E winds 15 to 20 kt with gusts to 25 kt. Seas 7 to 9 ft. Wave Detail: E 8 ft at 8 seconds and E 3 ft at 13 seconds. A slight chance of tstms in the morning. A chance of showers. .MON NIGHT...E winds 15 to 20 kt with gusts to 25 kt. Seas 7 to 9 ft. Wave Detail: E 8 ft at 9 seconds and E 3 ft at 13 seconds. A chance of showers in the evening, then a slight chance of showers and tstms after midnight. .TUE...E winds 15 kt with gusts to 25 kt. Seas 6 to 8 ft, subsiding to 6 to 7 ft in the afternoon. Wave Detail: E 7 ft at 8 seconds and E 2 ft at 13 seconds, becoming E 7 ft at 8 seconds and E 1 foot at 13 seconds. A slight chance of tstms in the morning. A slight chance of showers. .TUE NIGHT...E winds 10 to 15 kt with gusts to 20 kt. Seas 5 to 7 ft, subsiding to 5 to 6 ft after midnight. .WED...E winds 10 to 15 kt. Seas 4 to 5 ft. .WED NIGHT...E winds 10 to 15 kt. Seas 4 to 5 ft. A slight chance of showers. .THU...NE winds 20 to 25 kt. Seas 5 to 7 ft. A chance of showers with a slight chance of tstms. .THU NIGHT...NE winds 25 to 30 kt. Seas 7 to 9 ft. A chance of showers with a slight chance of tstms. Winds and seas higher in and near tstms. $$