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Charleston, SC Local Forecast Office

Charleston Harbor MR

Marine Point Forecast

[NOTICE]

    • Today

      Today:Variable winds less than 5 kt becoming E 5 to 8 kt in the afternoon. A slight chance of showers and thunderstorms before 8am, then a slight chance of showers between 8am and 10am. Seas 1 ft or less.

      ⇑E 8kt
      < 1ft

    • Tonight

      Tonight:Variable winds 5 kt or less. A chance of showers and thunderstorms, mainly after 2am. Seas 1 ft or less.

      Light Wind
      < 1ft

    • Tuesday

      Tuesday:Variable winds less than 5 kt becoming E 5 to 8 kt in the morning. A chance of showers and thunderstorms before 2pm, then showers likely and possibly a thunderstorm between 2pm and 4pm, then a chance of showers and thunderstorms after 4pm. Seas 1 ft or less.

      ⇑E 8kt
      < 1ft

    • Tuesday Night

      Tuesday Night:Variable winds 5 kt or less. A chance of showers and thunderstorms before 8pm, then showers likely and possibly a thunderstorm between 8pm and 2am, then a chance of showers and thunderstorms after 2am. Seas 1 ft or less.

      Light Wind
      < 1ft

    • Wednesday

      Wednesday:NE wind 9 to 11 kt. A chance of showers and thunderstorms before 8am, then a chance of showers between 8am and 2pm, then showers likely and possibly a thunderstorm after 2pm. Seas 1 ft or less.

      NE 11kt
      < 1ft

    • Wednesday Night

      Wednesday Night:N wind around 12 kt. Showers and thunderstorms likely before 11pm, then a slight chance of showers between 11pm and 2am, then a slight chance of showers and thunderstorms after 2am. Seas 1 ft or less.

      N 12kt
      < 1ft

    • Thursday

      Thursday:N wind 14 to 16 kt. A slight chance of thunderstorms before 8am. Seas 1 ft or less.

      N 16kt
      < 1ft

    • Thursday Night

      Thursday Night:N wind 12 to 14 kt, with gusts as high as 21 kt. Partly cloudy. Seas 1 ft or less.

      N 14kt
      < 1ft

    • Friday

      Friday:N wind 11 to 14 kt, with gusts as high as 20 kt. Sunny. Seas 1 ft or less.

      N 14kt
      < 1ft


Associated Zone Forecast which includes this point

Last Update: 2:35 am EDT Sep 21, 2026
Forecast Valid: 6am EDT Sep 21, 2026-6pm EDT Sep 27, 2026

View Nearby Observations

Detailed Forecast


Today
Variable winds less than 5 kt becoming E 5 to 8 kt in the afternoon. A slight chance of showers and thunderstorms before 8am, then a slight chance of showers between 8am and 10am. Seas 1 ft or less.
Tonight
Variable winds 5 kt or less. A chance of showers and thunderstorms, mainly after 2am. Seas 1 ft or less.
Tuesday
Variable winds less than 5 kt becoming E 5 to 8 kt in the morning. A chance of showers and thunderstorms before 2pm, then showers likely and possibly a thunderstorm between 2pm and 4pm, then a chance of showers and thunderstorms after 4pm. Seas 1 ft or less.
Tuesday Night
Variable winds 5 kt or less. A chance of showers and thunderstorms before 8pm, then showers likely and possibly a thunderstorm between 8pm and 2am, then a chance of showers and thunderstorms after 2am. Seas 1 ft or less.
Wednesday
NE wind 9 to 11 kt. A chance of showers and thunderstorms before 8am, then a chance of showers between 8am and 2pm, then showers likely and possibly a thunderstorm after 2pm. Seas 1 ft or less.
Wednesday Night
N wind around 12 kt. Showers and thunderstorms likely before 11pm, then a slight chance of showers between 11pm and 2am, then a slight chance of showers and thunderstorms after 2am. Seas 1 ft or less.
Thursday
N wind 14 to 16 kt. A slight chance of thunderstorms before 8am. Seas 1 ft or less.
Thursday Night
N wind 12 to 14 kt, with gusts as high as 21 kt. Partly cloudy. Seas 1 ft or less.
Friday
N wind 11 to 14 kt, with gusts as high as 20 kt. Sunny. Seas 1 ft or less.

Winds and waves higher in and near tstms. Unless otherwise noted, waves 1 foot or less. Charleston Harbor water temperature 84 degrees.

*Notices:

  1. This forecast is for a single location. For safety concerns, mariners should be aware of the weather over a larger area. Forecast information for a larger area can be found within the zone forecast and the NDFD graphics.
  2. The forecast conditions at a particular point may not exceed the criteria of a Small Craft Advisory, Gale, Storm etc. These watches/warnings/advisories are issued for the entire zone in which the point resides and mariners should act accordingly.
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ABOUT THIS FORECAST

Point Forecast: 32.76°N 79.9°W
Last Update: 2:35 am EDT Sep 21, 2026
Forecast Valid: 6am EDT Sep 21, 2026-6pm EDT Sep 27, 2026
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