


Coastal Waters Forecast
Issued by NWS Charleston, SC
Issued by NWS Charleston, SC
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348 FZUS52 KCHS 100615 CWFCHS Coastal Waters Forecast National Weather Service Charleston SC 215 AM EDT Fri Oct 10 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 AMZ300-101915- 215 AM EDT Fri Oct 10 2025 .Synopsis for the coastal waters of south coastal South Carolina and north coastal Georgia... High pressure will prevail inland through early next week. Meanwhile, at the surface, expect a coastal low to develop offshore today and linger through Saturday before lifting northward along the Atlantic coast. $$ AMZ330-101915- Charleston Harbor- 215 AM EDT Fri Oct 10 2025 ...SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE SATURDAY NIGHT... .REST OF TONIGHT...NE winds 15 to 20 kt with gusts to 25 kt. Waves 1 to 2 ft. A chance of showers late. .FRI...NE winds 15 to 20 kt with gusts to 30 kt. Waves 1 to 2 ft. A chance of tstms. Showers. .FRI NIGHT...NE winds 15 to 20 kt with gusts to 30 kt. Waves 1 to 2 ft. A slight chance of tstms. Showers. .SAT...N winds 15 to 20 kt with gusts to 25 kt. Waves 1 to 2 ft. Showers likely in the morning, then a chance of showers with a slight chance of tstms in the afternoon. .SAT NIGHT...N winds 15 to 20 kt with gusts to 25 kt. Waves 1 to 2 ft. A chance of showers. .SUN...N winds 15 kt with gusts to 20 kt. A chance of showers, mainly in the morning. .SUN NIGHT...N winds 10 to 15 kt. A slight chance of showers in the evening. .MON...NW winds 10 kt. .MON NIGHT...W winds 5 to 10 kt. .TUE...N winds 10 kt. .TUE NIGHT...N winds 5 to 10 kt. Winds and waves higher in and near tstms. Unless otherwise noted, waves 1 foot or less. Charleston Harbor water temperature 75 degrees. $$ AMZ350-101915- Waters from South Santee River to Edisto Beach SC out 20 NM- 215 AM EDT Fri Oct 10 2025 ...GALE WARNING IN EFFECT THROUGH SATURDAY EVENING... .REST OF TONIGHT...NE winds 20 to 30 kt with gusts to 35 kt. Seas 8 to 10 ft. Wave Detail: E 9 ft at 8 seconds. A slight chance of tstms. A slight chance of showers, then a chance of showers late. .FRI...NE winds 25 to 30 with gusts to 35 kt. Seas 8 to 10 ft, building to 9 to 11 ft in the afternoon. Wave Detail: E 10 ft at 8 seconds, becoming E 10 ft at 9 seconds. A chance of tstms. Showers. .FRI NIGHT...NE winds 25 to 30 with gusts to 35 kt, diminishing to 20 to 25 kt after midnight. Seas 9 to 11 ft, subsiding to 8 to 10 ft after midnight. Wave Detail: E 11 ft at 9 seconds, becoming E 10 ft at 9 seconds. Showers with a chance of tstms. .SAT...NE winds 25 to 30 kt. Seas 7 to 9 ft. Wave Detail: E 9 ft at 9 seconds. A slight chance of tstms. Showers likely, mainly in the morning. .SAT NIGHT...N winds 25 to 30 kt. Seas 7 to 9 ft. Wave Detail: NE 9 ft at 9 seconds. A chance of showers in the evening, then a chance of showers with a slight chance of tstms after midnight. .SUN...N winds 20 to 25 kt, diminishing to 15 to 20 kt in the afternoon. Seas 7 to 9 ft, subsiding to 6 to 8 ft in the afternoon. Wave Detail: NE 8 ft at 10 seconds, becoming NE 7 ft at 10 seconds. A chance of showers, mainly in the morning. .SUN NIGHT...N winds 15 to 20 kt with gusts to 25 kt. Seas 5 to 7 ft, subsiding to 5 to 6 ft after midnight. A slight chance of showers. .MON...NW winds 10 to 15 kt. Seas 4 to 6 ft. .MON NIGHT...W winds 10 to 15 kt. Seas 4 to 5 ft. .TUE...N winds 10 to 15 kt. Seas 4 to 5 ft. .TUE NIGHT...N winds 10 to 15 kt. Seas 4 to 5 ft. Winds and seas higher in and near tstms. $$ AMZ352-101915- Waters from Edisto Beach SC to Savannah GA out 20 NM- 215 AM EDT Fri Oct 10 2025 ...GALE WARNING IN EFFECT THROUGH SATURDAY EVENING... .REST OF TONIGHT...NE winds 20 to 30 kt with gusts to 35 kt. Seas 7 to 9 ft. Wave Detail: E 9 ft at 8 seconds. A chance of showers with a slight chance of tstms. .FRI...NE winds 25 to 30 with gusts to 35 kt. Seas 7 to 9 ft, building to 8 to 10 ft in the afternoon. Wave Detail: E 9 ft at 8 seconds, becoming E 10 ft at 8 seconds. A chance of tstms. A chance of showers in the morning, then showers in the afternoon. .FRI NIGHT...NE winds 25 to 30 kt with gusts to 35 kt. Seas 8 to 10 ft. Wave Detail: E 10 ft at 8 seconds. Showers likely with a slight chance of tstms. .SAT...NE winds 25 to 30 kt. Seas 7 to 9 ft. Wave Detail: E 9 ft at 9 seconds. A chance of showers. .SAT NIGHT...N winds 20 to 25 kt with gusts to 35 kt. Seas 7 to 9 ft, subsiding to 6 to 8 ft after midnight. Wave Detail: NE 8 ft at 9 seconds. A chance of showers. A slight chance of tstms after midnight. .SUN...N winds 20 to 25 kt, diminishing to 15 to 20 kt in the afternoon. Seas 6 to 8 ft, subsiding to 5 to 7 ft in the afternoon. Wave Detail: E 7 ft at 10 seconds, becoming E 6 ft at 10 seconds. A slight chance of showers. .SUN NIGHT...N winds 10 to 15 kt with gusts to 20 kt. Seas 5 to 6 ft, subsiding to 4 to 6 ft after midnight. A slight chance of showers in the evening. .MON...NW winds 10 to 15 kt. Seas 4 to 5 ft. .MON NIGHT...W winds 10 kt. Seas 4 to 5 ft. .TUE...N winds 10 to 15 kt. Seas 4 ft. .TUE NIGHT...NE winds 10 to 15 kt. Seas 3 to 4 ft. Winds and seas higher in and near tstms. $$ AMZ354-101915- Waters from Savannah GA to Altamaha Sound GA out 20 NM, including Grays Reef National Marine Sanctuary- 215 AM EDT Fri Oct 10 2025 ...GALE WARNING IN EFFECT THROUGH SATURDAY EVENING... .REST OF TONIGHT...NE winds 20 to 30 kt with gusts to 35 kt. Seas 7 to 9 ft. Wave Detail: NE 9 ft at 8 seconds. A chance of tstms. A chance of showers, then showers likely late. .FRI...NE winds 25 to 30 kt with gusts to 35 kt. Seas 7 to 9 ft. Wave Detail: NE 9 ft at 8 seconds. Showers likely with a chance of tstms. .FRI NIGHT...NE winds 20 to 25 kt with gusts to 35 kt. Seas 8 to 9 ft, subsiding to 7 to 9 ft after midnight. Wave Detail: NE 9 ft at 8 seconds. Showers with a chance of tstms. Vsby 1 to 3 NM in the evening. .SAT...N winds 25 to 30 kt. Seas 7 to 9 ft. Wave Detail: NE 9 ft at 9 seconds. A chance of showers. .SAT NIGHT...N winds 25 to 30 kt, diminishing to 20 to 25 kt after midnight. Seas 7 to 9 ft, subsiding to 6 to 8 ft after midnight. Wave Detail: NE 8 ft at 9 seconds, becoming NE 8 ft at 10 seconds. A chance of showers, mainly in the evening. .SUN...N winds 20 to 25 kt, diminishing to 15 to 20 kt in the afternoon. Seas 6 to 8 ft, subsiding to 5 to 7 ft in the afternoon. Wave Detail: NE 7 ft at 10 seconds, becoming E 7 ft at 10 seconds. A slight chance of showers in the morning. .SUN NIGHT...N winds 10 to 15 kt. Seas 5 to 6 ft. .MON...NW winds 10 to 15 kt. Seas 4 to 5 ft. .MON NIGHT...SW winds 10 kt. Seas 4 to 5 ft. .TUE...N winds 10 to 15 kt. Seas 4 to 5 ft. .TUE NIGHT...NE winds 10 to 15 kt. Seas 4 to 5 ft. Winds and seas higher in and near tstms. $$ AMZ374-101915- Waters from Savannah GA to Altamaha Sound GA from 20 to 60 NM- 215 AM EDT Fri Oct 10 2025 ...GALE WARNING IN EFFECT THROUGH LATE SATURDAY NIGHT... .REST OF TONIGHT...NE winds 25 to 30 kt with gusts to 35 kt. Seas 9 to 10 ft. Wave Detail: NE 10 ft at 8 seconds. Showers with a chance of tstms. Vsby 1 to 3 NM late. .FRI...NE winds 20 to 25 kt with gusts to 35 kt. Seas 9 to 10 ft. Wave Detail: NE 9 ft at 8 seconds. Showers with a chance of tstms. .FRI NIGHT...NE winds 20 to 25 kt with gusts to 35 kt. Seas 9 to 10 ft. Wave Detail: NE 10 ft at 8 seconds. Showers with a chance of tstms. Vsby 1 to 3 NM. .SAT...NE winds 25 to 30 kt. Seas 9 to 10 ft, building to 10 to 11 ft in the afternoon. Wave Detail: NE 10 ft at 10 seconds, becoming NE 11 ft at 9 seconds. Showers likely with a chance of tstms in the morning, then a chance of showers in the afternoon. .SAT NIGHT...N winds 25 to 30 kt. Seas 9 to 11 ft. Wave Detail: NE 11 ft at 9 seconds. A chance of showers with a slight chance of tstms. .SUN...N winds 20 to 25 kt, diminishing to 15 to 20 kt in the afternoon. Seas 8 to 10 ft, subsiding to 7 to 9 ft in the afternoon. Wave Detail: NE 9 ft at 10 seconds. A slight chance of showers. .SUN NIGHT...N winds 15 to 20 kt, diminishing to 10 to 15 kt after midnight. Seas 7 to 9 ft, subsiding to 6 to 8 ft after midnight. A slight chance of showers in the evening. .MON...NW winds 10 to 15 kt. Seas 5 to 7 ft. .MON NIGHT...NW winds 10 to 15 kt. Seas 5 to 6 ft. .TUE...N winds 10 to 15 kt. Seas 5 to 6 ft. .TUE NIGHT...NE winds 10 to 15 kt. Seas 4 to 6 ft. Winds and seas higher in and near tstms. $$