Coastal Waters Forecast for Charleston Harbor (AMZ340) (Text-Only)
NWS Forecast for: Charleston Harbor (AMZ340)
Issued by: National Weather Service Charleston, SC
Last Update: 539 PM EDT Wed Jul 22 2026
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Tonight: S winds 10 to 15 kt with gusts to 20 kt.

Thu: SW winds 10 to 15 kt.

Thu Night: S winds 10 to 15 kt.

Fri: S winds 5 to 10 kt. A chance of showers and tstms in the afternoon.

Fri Night: S winds 5 to 10 kt. A chance of showers. A chance of tstms, mainly in the evening.

Sat: SW winds 5 to 10 kt. Showers likely with a chance of tstms in the morning, then showers with tstms likely in the afternoon.

Sat Night: W winds 5 kt. Showers with tstms likely in the evening, then showers likely with a chance of tstms after midnight.

Sun: W winds 5 to 10 kt. Showers and tstms likely.

Sun Night: SW winds 5 kt. A slight chance of showers and tstms.

Mon: SW winds 5 to 10 kt.

Mon Night: S 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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