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Charleston, SC Local Forecast Office

Charleston Harbor MR

Marine Point Forecast

[NOTICE]

    • Today

      Today:SSW wind 5 to 8 kt increasing to 11 to 14 kt in the afternoon. Winds could gust as high as 20 kt. Mostly sunny. Seas 1 ft or less.

      ⇑SSW 14kt
      < 1ft

    • Tonight

      Tonight:SSW wind 12 to 14 kt, with gusts as high as 21 kt. Mostly cloudy. Seas 1 ft or less.

      SSW 14kt
      < 1ft

    • Thursday

      Thursday:SW wind 11 to 15 kt becoming W in the afternoon. Winds could gust as high as 22 kt. Showers likely, then showers and possibly a thunderstorm after 11am. Seas 1 ft or less.

      WSW 15kt
      < 1ft

    • Thursday Night

      Thursday Night:NE wind 12 to 16 kt. Showers, mainly before 8pm. Seas 1 ft or less.

      NE 16kt
      < 1ft

    • Friday

      Friday:E wind 6 to 11 kt. Sunny. Seas 1 ft or less.

      E 11kt
      < 1ft

    • Friday Night

      Friday Night: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 E 5 to 7 kt in the afternoon. Sunny. Seas 1 ft or less.

      ⇑E 7kt
      < 1ft

    • Saturday Night

      Saturday Night:Variable winds 5 kt or less. A slight chance of showers. Seas 1 ft or less.

      Light Wind
      < 1ft

    • Sunday

      Sunday:E wind 6 to 10 kt becoming SSE in the afternoon. A chance of showers, then showers likely and possibly a thunderstorm after 2pm. Seas 1 ft or less.

      SE 10kt
      < 1ft


Associated Zone Forecast which includes this point

Last Update: 8:32 am EDT Mar 11, 2026
Forecast Valid: 9am EDT Mar 11, 2026-6pm EDT Mar 17, 2026

View Nearby Observations

Detailed Forecast


Today
SSW wind 5 to 8 kt increasing to 11 to 14 kt in the afternoon. Winds could gust as high as 20 kt. Mostly sunny. Seas 1 ft or less.
Tonight
SSW wind 12 to 14 kt, with gusts as high as 21 kt. Mostly cloudy. Seas 1 ft or less.
Thursday
SW wind 11 to 15 kt becoming W in the afternoon. Winds could gust as high as 22 kt. Showers likely, then showers and possibly a thunderstorm after 11am. Seas 1 ft or less.
Thursday Night
NE wind 12 to 16 kt. Showers, mainly before 8pm. Seas 1 ft or less.
Friday
E wind 6 to 11 kt. Sunny. Seas 1 ft or less.
Friday Night
Variable winds 5 kt or less. Mostly clear. Seas 1 ft or less.
Saturday
Variable winds less than 5 kt becoming E 5 to 7 kt in the afternoon. Sunny. Seas 1 ft or less.
Saturday Night
Variable winds 5 kt or less. A slight chance of showers. Seas 1 ft or less.
Sunday
E wind 6 to 10 kt becoming SSE in the afternoon. A chance of showers, then showers likely and possibly a thunderstorm after 2pm. 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 62 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 am EDT Mar 11, 2026
Forecast Valid: 9am EDT Mar 11, 2026-6pm EDT Mar 17, 2026
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