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Charleston, SC Local Forecast Office

Charleston Harbor MR

Marine Point Forecast

[NOTICE]

    • Overnight

      Overnight:Variable winds 5 kt or less. Mostly clear. Seas 1 ft or less.

      Light Wind
      < 1ft

    • Saturday

      Saturday:Variable winds less than 5 kt becoming S 5 to 10 kt in the afternoon. Sunny. Seas 1 ft or less.

      ⇑S 10kt
      < 1ft

    • Saturday Night

      Saturday Night:SSW wind 6 to 9 kt. A chance of showers and thunderstorms, mainly between 1am and 2am. Seas 1 ft or less.

      SSW 9kt
      < 1ft

    • Sunday

      Sunday:Variable winds less than 5 kt becoming SSW 5 to 7 kt in the afternoon. Showers likely and possibly a thunderstorm between 2pm and 5pm, then showers and thunderstorms likely after 5pm. Some of the storms could produce heavy rainfall. Seas 1 ft or less.

      ⇑SSW 7kt
      < 1ft

    • Sunday Night

      Sunday Night:S wind around 8 kt becoming NNE in the evening. Showers and thunderstorms likely before 8pm, then showers and possibly a thunderstorm between 8pm and 2am, then a chance of showers and thunderstorms after 2am. Some of the storms could produce heavy rainfall. Seas 1 ft or less.

      NE 8kt
      < 1ft

    • Labor Day

      Labor Day:ENE wind 11 to 14 kt increasing to 15 to 18 kt in the afternoon. A chance of showers and thunderstorms before 8am, then showers likely and possibly a thunderstorm between 8am and 2pm, then showers and thunderstorms likely after 2pm. Seas 1 ft or less.

      ⇑ENE 18kt
      < 1ft

    • Monday Night

      Monday Night:ENE wind 12 to 14 kt, with gusts as high as 21 kt. Showers and thunderstorms likely, mainly before 8pm. Seas 1 ft or less.

      ENE 14kt
      < 1ft

    • Tuesday

      Tuesday:E wind 13 to 17 kt, with gusts as high as 23 kt. A chance of showers and thunderstorms. Seas 1 ft or less.

      E 17kt
      < 1ft

    • Tuesday Night

      Tuesday Night:E wind 8 to 12 kt. A chance of showers and thunderstorms before 2am, then a slight chance of showers. Seas 1 ft or less.

      E 12kt
      < 1ft


Associated Zone Forecast which includes this point

Last Update: 8:32 pm EDT Sep 4, 2026
Forecast Valid: 12am EDT Sep 5, 2026-6pm EDT Sep 11, 2026

View Nearby Observations

Detailed Forecast


Overnight
Variable winds 5 kt or less. Mostly clear. Seas 1 ft or less.
Saturday
Variable winds less than 5 kt becoming S 5 to 10 kt in the afternoon. Sunny. Seas 1 ft or less.
Saturday Night
SSW wind 6 to 9 kt. A chance of showers and thunderstorms, mainly between 1am and 2am. Seas 1 ft or less.
Sunday
Variable winds less than 5 kt becoming SSW 5 to 7 kt in the afternoon. Showers likely and possibly a thunderstorm between 2pm and 5pm, then showers and thunderstorms likely after 5pm. Some of the storms could produce heavy rainfall. Seas 1 ft or less.
Sunday Night
S wind around 8 kt becoming NNE in the evening. Showers and thunderstorms likely before 8pm, then showers and possibly a thunderstorm between 8pm and 2am, then a chance of showers and thunderstorms after 2am. Some of the storms could produce heavy rainfall. Seas 1 ft or less.
Labor Day
ENE wind 11 to 14 kt increasing to 15 to 18 kt in the afternoon. A chance of showers and thunderstorms before 8am, then showers likely and possibly a thunderstorm between 8am and 2pm, then showers and thunderstorms likely after 2pm. Seas 1 ft or less.
Monday Night
ENE wind 12 to 14 kt, with gusts as high as 21 kt. Showers and thunderstorms likely, mainly before 8pm. Seas 1 ft or less.
Tuesday
E wind 13 to 17 kt, with gusts as high as 23 kt. A chance of showers and thunderstorms. Seas 1 ft or less.
Tuesday Night
E wind 8 to 12 kt. A chance of showers and thunderstorms before 2am, then a slight chance of showers. 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 86 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: 8:32 pm EDT Sep 4, 2026
Forecast Valid: 12am EDT Sep 5, 2026-6pm EDT Sep 11, 2026
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