Coastal Waters Forecast for Charleston Harbor (AMZ340) (Text-Only)
NWS Forecast for: Charleston Harbor (AMZ340)
Issued by: National Weather Service Charleston, SC
Last Update: 724 AM EDT Sun Sep 6 2026


Today: NW winds 5 kt, becoming E early this afternoon, then increasing to 10 kt late. A slight chance of showers and tstms early this afternoon. A chance of showers and tstms late.

Tonight: E winds 5 to 10 kt. A chance of tstms. Showers likely.

Mon: NE winds 10 to 15 kt, becoming E 15 to 20 kt in the afternoon. Waves 1 to 2 ft. A chance of tstms. Showers.

Mon Night: E winds 15 to 20 kt, becoming NE 10 to 15 kt after midnight. Waves 1 to 2 ft. Showers likely. A chance of tstms, mainly in the evening.

Tue: E winds 15 to 20 kt with gusts to 25 kt. Waves 1 to 2 ft. Showers likely. A slight chance of tstms in the morning, then a chance of tstms in the afternoon.

Tue Night: E winds 10 to 15 kt. A slight chance of tstms. Showers likely, mainly in the evening.

Wed: E winds 5 to 10 kt. A chance of showers with a slight chance of tstms.

Wed Night: SE winds 5 to 10 kt.

Thu: SW winds 5 to 10 kt. A chance of showers and tstms.

Thu Night: SW winds 5 to 10 kt. A slight 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 86 degrees.







Zone Forecast: Charleston Harbor (AMZ340)

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