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Charleston, SC Local Forecast Office

Charleston Harbor MR

Marine Point Forecast

[NOTICE]

    • Tonight

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

      S 9kt⇓
      < 1ft

    • Friday

      Friday:Variable winds less than 5 kt becoming S 6 to 11 kt in the afternoon. Sunny. Seas 1 ft or less.

      ⇑S 11kt
      < 1ft

    • Friday Night

      Friday Night:SSW wind 5 to 8 kt. Mostly clear. Seas 1 ft or less.

      SSW 8kt
      < 1ft

    • Saturday

      Saturday:S wind 5 to 8 kt increasing to 11 to 14 kt in the afternoon. Sunny. Seas 1 ft or less.

      ⇑S 14kt
      < 1ft

    • Saturday Night

      Saturday Night:SSW wind 11 to 13 kt, with gusts as high as 20 kt. A slight chance of showers and thunderstorms. Seas 1 ft or less.

      SSW 13kt
      < 1ft

    • Sunday

      Sunday:SSW wind 9 to 12 kt increasing to 13 to 16 kt in the afternoon. Winds could gust as high as 22 kt. A chance of showers, with thunderstorms also possible after 8am. Seas 1 ft or less.

      ⇑SSW 16kt
      < 1ft

    • Sunday Night

      Sunday Night:SSW wind 8 to 12 kt. Showers likely and possibly a thunderstorm before 2am, then a chance of showers and thunderstorms after 2am. Seas 1 ft or less.

      SSW 12kt
      < 1ft

    • Monday

      Monday:SSW wind 6 to 9 kt increasing to 9 to 12 kt in the afternoon. A chance of showers and thunderstorms. Seas 1 ft or less.

      ⇑SSW 12kt
      < 1ft

    • Monday Night

      Monday Night:SSW wind 7 to 10 kt. A chance of showers and thunderstorms. Seas 1 ft or less.

      SSW 10kt
      < 1ft


Associated Zone Forecast which includes this point

Last Update: 2:30 pm EDT Jul 16, 2026
Forecast Valid: 6pm EDT Jul 16, 2026-6pm EDT Jul 23, 2026

View Nearby Observations

Detailed Forecast


Tonight
S wind 5 to 9 kt becoming variable and less than 5 kt after midnight. Mostly clear. Seas 1 ft or less.
Friday
Variable winds less than 5 kt becoming S 6 to 11 kt in the afternoon. Sunny. Seas 1 ft or less.
Friday Night
SSW wind 5 to 8 kt. Mostly clear. Seas 1 ft or less.
Saturday
S wind 5 to 8 kt increasing to 11 to 14 kt in the afternoon. Sunny. Seas 1 ft or less.
Saturday Night
SSW wind 11 to 13 kt, with gusts as high as 20 kt. A slight chance of showers and thunderstorms. Seas 1 ft or less.
Sunday
SSW wind 9 to 12 kt increasing to 13 to 16 kt in the afternoon. Winds could gust as high as 22 kt. A chance of showers, with thunderstorms also possible after 8am. Seas 1 ft or less.
Sunday Night
SSW wind 8 to 12 kt. Showers likely and possibly a thunderstorm before 2am, then a chance of showers and thunderstorms after 2am. Seas 1 ft or less.
Monday
SSW wind 6 to 9 kt increasing to 9 to 12 kt in the afternoon. A chance of showers and thunderstorms. Seas 1 ft or less.
Monday Night
SSW wind 7 to 10 kt. A chance of showers and thunderstorms. 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 87 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: 2:30 pm EDT Jul 16, 2026
Forecast Valid: 6pm EDT Jul 16, 2026-6pm EDT Jul 23, 2026
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