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Charleston, SC Local Forecast Office

Charleston Harbor MR

Marine Point Forecast

[NOTICE]

    • Today

      Today:SSW wind 6 to 9 kt increasing to 10 to 13 kt in the afternoon. Winds could gust as high as 20 kt. Sunny. Seas 1 ft or less.

      ⇑SSW 13kt
      < 1ft

    • Tonight

      Tonight:S wind 11 to 14 kt, with gusts as high as 21 kt. Increasing clouds. Seas 1 ft or less.

      S 14kt
      < 1ft

    • Thursday

      Thursday:SW wind 10 to 14 kt, with gusts as high as 22 kt. A chance of showers and thunderstorms before 2pm, then showers likely and possibly a thunderstorm between 2pm and 5pm, then a chance of showers and thunderstorms after 5pm. Seas 1 ft or less.

      SW 14kt
      < 1ft

    • Thursday Night

      Thursday Night:WSW wind 6 to 9 kt becoming NW after midnight. A chance of showers and thunderstorms, mainly before 7pm. Seas 1 ft or less.

      WSW 9kt
      < 1ft

    • Friday

      Friday:NNE wind around 10 kt becoming E in the afternoon. Mostly cloudy. Seas 1 ft or less.

      NNE 10kt
      < 1ft

    • Friday Night

      Friday Night:ESE wind around 6 kt becoming variable and less than 5 kt in the evening. A slight chance of showers, then a chance of showers and thunderstorms after 2am. Seas 1 ft or less.

      ESE 6kt⇓
      < 1ft

    • Saturday

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

      ⇑SW 8kt
      < 1ft

    • Saturday Night

      Saturday Night:Variable winds 5 kt or less. A chance of showers before 8pm, then a slight chance of showers and thunderstorms after 2am. Seas 1 ft or less.

      Light Wind
      < 1ft

    • Sunday

      Sunday:Variable winds less than 5 kt becoming S 5 to 10 kt in the afternoon. A chance of showers and thunderstorms, mainly after 8am. Seas 1 ft or less.

      ⇑S 10kt
      < 1ft


Associated Zone Forecast which includes this point

Last Update: 2:37 am EDT May 6, 2026
Forecast Valid: 5am EDT May 6, 2026-6pm EDT May 12, 2026

View Nearby Observations

Detailed Forecast


Today
SSW wind 6 to 9 kt increasing to 10 to 13 kt in the afternoon. Winds could gust as high as 20 kt. Sunny. Seas 1 ft or less.
Tonight
S wind 11 to 14 kt, with gusts as high as 21 kt. Increasing clouds. Seas 1 ft or less.
Thursday
SW wind 10 to 14 kt, with gusts as high as 22 kt. A chance of showers and thunderstorms before 2pm, then showers likely and possibly a thunderstorm between 2pm and 5pm, then a chance of showers and thunderstorms after 5pm. Seas 1 ft or less.
Thursday Night
WSW wind 6 to 9 kt becoming NW after midnight. A chance of showers and thunderstorms, mainly before 7pm. Seas 1 ft or less.
Friday
NNE wind around 10 kt becoming E in the afternoon. Mostly cloudy. Seas 1 ft or less.
Friday Night
ESE wind around 6 kt becoming variable and less than 5 kt in the evening. A slight chance of showers, then a chance of showers and thunderstorms after 2am. Seas 1 ft or less.
Saturday
Variable winds less than 5 kt becoming SW 5 to 8 kt in the morning. A chance of showers and thunderstorms before 8am, then showers likely and possibly a thunderstorm between 8am and 2pm, then a chance of showers and thunderstorms after 2pm. Seas 1 ft or less.
Saturday Night
Variable winds 5 kt or less. A chance of showers before 8pm, then a slight chance of showers and thunderstorms after 2am. Seas 1 ft or less.
Sunday
Variable winds less than 5 kt becoming S 5 to 10 kt in the afternoon. A chance of showers and thunderstorms, mainly after 8am. 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: 2:37 am EDT May 6, 2026
Forecast Valid: 5am EDT May 6, 2026-6pm EDT May 12, 2026
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