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Charleston, SC Local Forecast Office

Charleston Harbor MR

Marine Point Forecast

[NOTICE]

    • Sunday

      Sunday:Variable winds less than 5 kt becoming S 5 to 7 kt in the afternoon. Showers and thunderstorms likely, mainly before 11am. Seas 1 ft or less.

      ⇑S 7kt
      < 1ft

    • Sunday Night

      Sunday Night:Variable winds 5 kt or less. A slight chance of showers and thunderstorms between 2am and 5am, then a slight chance of showers after 5am. Seas 1 ft or less.

      Light Wind
      < 1ft

    • Monday

      Monday:Variable winds less than 5 kt becoming SW 5 to 8 kt in the morning. A chance of showers before 11am, then a chance of showers and thunderstorms between 11am and 2pm, then showers and possibly a thunderstorm after 2pm. Seas 1 ft or less.

      ⇑SW 8kt
      < 1ft

    • Monday Night

      Monday Night:NNW wind 6 to 9 kt becoming NNE 9 to 12 kt after midnight. Showers and possibly a thunderstorm before 11pm, then showers likely. Seas 1 ft or less.

      ⇑NNE 12kt
      < 1ft

    • Tuesday

      Tuesday:NNE wind 12 to 15 kt, with gusts as high as 21 kt. A slight chance of showers before 8am. Seas 1 ft or less.

      NNE 15kt
      < 1ft

    • Tuesday Night

      Tuesday Night:ENE wind 5 to 9 kt becoming variable and less than 5 kt after midnight. Mostly clear. Seas 1 ft or less.

      ENE 9kt⇓
      < 1ft

    • Wednesday

      Wednesday:Variable winds less than 5 kt becoming SE 5 to 8 kt in the afternoon. Sunny. Seas 1 ft or less.

      ⇑SE 8kt
      < 1ft

    • Wednesday Night

      Wednesday Night:S wind around 7 kt becoming SW after midnight. A slight chance of showers. Seas 1 ft or less.

      S 7kt
      < 1ft

    • Thursday

      Thursday:W wind 6 to 9 kt. A slight chance of showers. Seas 1 ft or less.

      W 9kt
      < 1ft


Associated Zone Forecast which includes this point

Last Update: 8:32 pm EDT May 9, 2026
Forecast Valid: 2am EDT May 10, 2026-6pm EDT May 16, 2026

View Nearby Observations

Detailed Forecast


Sunday
Variable winds less than 5 kt becoming S 5 to 7 kt in the afternoon. Showers and thunderstorms likely, mainly before 11am. Seas 1 ft or less.
Sunday Night
Variable winds 5 kt or less. A slight chance of showers and thunderstorms between 2am and 5am, then a slight chance of showers after 5am. Seas 1 ft or less.
Monday
Variable winds less than 5 kt becoming SW 5 to 8 kt in the morning. A chance of showers before 11am, then a chance of showers and thunderstorms between 11am and 2pm, then showers and possibly a thunderstorm after 2pm. Seas 1 ft or less.
Monday Night
NNW wind 6 to 9 kt becoming NNE 9 to 12 kt after midnight. Showers and possibly a thunderstorm before 11pm, then showers likely. Seas 1 ft or less.
Tuesday
NNE wind 12 to 15 kt, with gusts as high as 21 kt. A slight chance of showers before 8am. Seas 1 ft or less.
Tuesday Night
ENE wind 5 to 9 kt becoming variable and less than 5 kt after midnight. Mostly clear. Seas 1 ft or less.
Wednesday
Variable winds less than 5 kt becoming SE 5 to 8 kt in the afternoon. Sunny. Seas 1 ft or less.
Wednesday Night
S wind around 7 kt becoming SW after midnight. A slight chance of showers. Seas 1 ft or less.
Thursday
W wind 6 to 9 kt. A slight chance of showers. Seas 1 ft or less.

Winds and waves higher in and near tstms.

*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: 8:32 pm EDT May 9, 2026
Forecast Valid: 2am EDT May 10, 2026-6pm EDT May 16, 2026
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