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Charleston, SC Local Forecast Office

Charleston Harbor MR

Marine Point Forecast

[NOTICE]
    • Tonight

      Tonight:ESE wind 5 to 9 kt becoming variable and less than 5 kt after midnight. Partly cloudy. Seas 1 ft or less.

      ESE 9kt⇓
      < 1ft

    • Friday

      Friday:Variable winds less than 5 kt becoming SSE 5 to 9 kt in the afternoon. Sunny. Seas 1 ft or less.

      ⇑SSE 9kt
      < 1ft

    • Friday Night

      Friday Night:S wind 5 to 7 kt becoming SW after midnight. Mostly clear. Seas 1 ft or less.

      S 7kt
      < 1ft

    • Saturday

      Saturday:Variable winds less than 5 kt becoming SSW 5 to 9 kt in the afternoon. Sunny. Seas 1 ft or less.

      ⇑SSW 9kt
      < 1ft

    • Saturday Night

      Saturday Night:SSW wind 6 to 9 kt becoming WSW after midnight. A chance of showers and thunderstorms.   Seas 1 ft or less.

      SSW 9kt
      < 1ft

    • Sunday

      Sunday:Variable winds less than 5 kt becoming E 5 to 7 kt in the afternoon. A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 2pm.   Seas 1 ft or less.

      ⇑E 7kt
      < 1ft

    • Sunday Night

      Sunday Night:ENE wind around 9 kt. Showers and possibly a thunderstorm, mainly before 2am, then a chance of showers and thunderstorms after 2am.   Seas 1 ft or less.

      ENE 9kt
      < 1ft

    • Labor Day

      Labor Day:ENE wind 11 to 14 kt increasing to 14 to 17 kt in the afternoon. A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 8am.   Seas 1 ft or less.

      ⇑ENE 17kt
      < 1ft

    • Monday Night

      Monday Night:ENE wind 11 to 14 kt, with gusts as high as 20 kt. A chance of showers and thunderstorms.   Seas 1 ft or less.

      ENE 14kt
      < 1ft


Associated Zone Forecast which includes this point

Last Update: 2:48 pm EDT Sep 3, 2026
Forecast Valid: 5pm EDT Sep 3, 2026-6pm EDT Sep 10, 2026

View Nearby Observations

Detailed Forecast


Tonight
ESE wind 5 to 9 kt becoming variable and less than 5 kt after midnight. Partly cloudy. Seas 1 ft or less.
Friday
Variable winds less than 5 kt becoming SSE 5 to 9 kt in the afternoon. Sunny. Seas 1 ft or less.
Friday Night
S wind 5 to 7 kt becoming SW after midnight. Mostly clear. Seas 1 ft or less.
Saturday
Variable winds less than 5 kt becoming SSW 5 to 9 kt in the afternoon. Sunny. Seas 1 ft or less.
Saturday Night
SSW wind 6 to 9 kt becoming WSW after midnight. A chance of showers and thunderstorms. Seas 1 ft or less.
Sunday
Variable winds less than 5 kt becoming E 5 to 7 kt in the afternoon. A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 2pm. Seas 1 ft or less.
Sunday Night
ENE wind around 9 kt. Showers and possibly a thunderstorm, mainly before 2am, then a chance of showers and thunderstorms after 2am. Seas 1 ft or less.
Labor Day
ENE wind 11 to 14 kt increasing to 14 to 17 kt in the afternoon. A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 8am. Seas 1 ft or less.
Monday Night
ENE wind 11 to 14 kt, with gusts as high as 20 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 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: 2:48 pm EDT Sep 3, 2026
Forecast Valid: 5pm EDT Sep 3, 2026-6pm EDT Sep 10, 2026
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