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Charleston, SC Local Forecast Office

Charleston Harbor MR

Marine Point Forecast

[NOTICE]
    • Tonight

      Tonight:SSW wind 7 to 9 kt. Mostly cloudy. Seas 1 ft or less.

      SSW 9kt
      < 1ft

    • Friday

      Friday:SW wind 5 to 8 kt becoming S 8 to 11 kt in the afternoon. A chance of showers and thunderstorms, mainly after 3pm.   Seas 1 ft or less.

      ⇑S 11kt
      < 1ft

    • Friday Night

      Friday Night:SSW wind 5 to 8 kt. A chance of showers and thunderstorms before 10pm, then a slight chance of showers and thunderstorms after 3am.   Seas 1 ft or less.

      SSW 8kt
      < 1ft

    • Saturday

      Saturday:SW wind 5 to 8 kt. A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 2pm.   Seas 1 ft or less.

      SW 8kt
      < 1ft

    • Saturday Night

      Saturday Night:SW wind around 6 kt becoming variable and less than 5 kt. Showers and possibly a thunderstorm, mainly before 2am, then a chance of showers and thunderstorms after 2am.   Seas 1 ft or less.

      SW 6kt⇓
      < 1ft

    • Sunday

      Sunday:WNW wind around 7 kt becoming WSW 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.

      NW 7kt
      < 1ft

    • Sunday Night

      Sunday Night:Variable winds 5 kt or less. Showers and thunderstorms likely, mainly before 8pm.   Seas 1 ft or less.

      Light Wind
      < 1ft

    • Monday

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

      ⇑SE 8kt
      < 1ft

    • Monday Night

      Monday Night:SSE wind 5 to 7 kt becoming SSW after midnight. Mostly clear. Seas 1 ft or less.

      SSE 7kt
      < 1ft


Associated Zone Forecast which includes this point

Last Update: 8:32 pm EDT Jul 23, 2026
Forecast Valid: 10pm EDT Jul 23, 2026-6pm EDT Jul 30, 2026

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Detailed Forecast


Tonight
SSW wind 7 to 9 kt. Mostly cloudy. Seas 1 ft or less.
Friday
SW wind 5 to 8 kt becoming S 8 to 11 kt in the afternoon. A chance of showers and thunderstorms, mainly after 3pm. Seas 1 ft or less.
Friday Night
SSW wind 5 to 8 kt. A chance of showers and thunderstorms before 10pm, then a slight chance of showers and thunderstorms after 3am. Seas 1 ft or less.
Saturday
SW wind 5 to 8 kt. A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 2pm. Seas 1 ft or less.
Saturday Night
SW wind around 6 kt becoming variable and less than 5 kt. Showers and possibly a thunderstorm, mainly before 2am, then a chance of showers and thunderstorms after 2am. Seas 1 ft or less.
Sunday
WNW wind around 7 kt becoming WSW 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.
Sunday Night
Variable winds 5 kt or less. Showers and thunderstorms likely, mainly before 8pm. Seas 1 ft or less.
Monday
Variable winds less than 5 kt becoming SE 5 to 8 kt in the afternoon. Sunny. Seas 1 ft or less.
Monday Night
SSE wind 5 to 7 kt becoming SSW after midnight. Mostly clear. 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: 8:32 pm EDT Jul 23, 2026
Forecast Valid: 10pm EDT Jul 23, 2026-6pm EDT Jul 30, 2026
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