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Charleston, SC Local Forecast Office

4NM N Charleston Harbor MR

Marine Point Forecast

[NOTICE]

    • Overnight

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

      Light Wind
      < 1ft

    • Tuesday

      Tuesday:Variable winds less than 5 kt becoming SSW around 6 kt in the afternoon. A chance of showers, with thunderstorms also possible after 2pm. Seas 1 ft or less.

      ⇑SSW 6kt
      < 1ft

    • Tuesday Night

      Tuesday Night:Variable winds 5 kt or less. A slight chance of showers and thunderstorms before 7pm. Seas 1 ft or less.

      Light Wind
      < 1ft

    • Wednesday

      Wednesday:Variable winds less than 5 kt becoming SSW 5 to 10 kt in the morning. Mostly sunny. Seas 1 ft or less.

      ⇑SSW 10kt
      < 1ft

    • Wednesday Night

      Wednesday Night:SSW wind around 8 kt. Mostly cloudy. Seas 1 ft or less.

      SSW 8kt
      < 1ft

    • Thursday

      Thursday:SSW wind 8 to 11 kt becoming W in the afternoon. Showers, mainly after 2pm. Seas 1 ft or less.

      WSW 11kt
      < 1ft

    • Thursday Night

      Thursday Night:NNE wind around 9 kt. Showers, mainly before 8pm. Seas 1 ft or less.

      NNE 9kt
      < 1ft

    • Friday

      Friday:NE wind around 7 kt becoming E in the afternoon. A slight chance of showers. Seas 1 ft or less.

      NE 7kt
      < 1ft

    • Friday Night

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

      Light Wind
      < 1ft


Associated Zone Forecast which includes this point

Last Update: 8:30 pm EDT Mar 9, 2026
Forecast Valid: 12am EDT Mar 10, 2026-6pm EDT Mar 16, 2026

View Nearby Observations

Detailed Forecast


Overnight
Variable winds 5 kt or less. Mostly cloudy. Seas 1 ft or less.
Tuesday
Variable winds less than 5 kt becoming SSW around 6 kt in the afternoon. A chance of showers, with thunderstorms also possible after 2pm. Seas 1 ft or less.
Tuesday Night
Variable winds 5 kt or less. A slight chance of showers and thunderstorms before 7pm. Seas 1 ft or less.
Wednesday
Variable winds less than 5 kt becoming SSW 5 to 10 kt in the morning. Mostly sunny. Seas 1 ft or less.
Wednesday Night
SSW wind around 8 kt. Mostly cloudy. Seas 1 ft or less.
Thursday
SSW wind 8 to 11 kt becoming W in the afternoon. Showers, mainly after 2pm. Seas 1 ft or less.
Thursday Night
NNE wind around 9 kt. Showers, mainly before 8pm. Seas 1 ft or less.
Friday
NE wind around 7 kt becoming E in the afternoon. A slight chance of showers. Seas 1 ft or less.
Friday Night
Variable winds 5 kt or less. 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 63 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: 32.83°N 79.89°W
Last Update: 8:30 pm EDT Mar 9, 2026
Forecast Valid: 12am EDT Mar 10, 2026-6pm EDT Mar 16, 2026
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