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Charleston, SC Local Forecast Office

Charleston Harbor MR

Marine Point Forecast

[NOTICE]

    • Overnight

      Overnight:W wind around 6 kt. Mostly clear. Seas 1 ft or less.

      W 6kt
      < 1ft

    • Wednesday

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

      ⇑S 9kt
      < 1ft

    • Wednesday Night

      Wednesday Night:S wind around 6 kt becoming variable and less than 5 kt in the evening. Mostly clear. Seas 1 ft or less.

      S 6kt⇓
      < 1ft

    • Thursday

      Thursday:Variable winds less than 5 kt becoming S 5 to 10 kt in the afternoon. Sunny. Seas 1 ft or less.

      ⇑S 10kt
      < 1ft

    • Thursday Night

      Thursday Night:SSW wind 6 to 8 kt. Mostly clear. Seas 1 ft or less.

      SSW 8kt
      < 1ft

    • Friday

      Friday:Variable winds less than 5 kt becoming S 6 to 11 kt in the morning. A slight chance of showers and thunderstorms after 2pm. Seas 1 ft or less.

      ⇑S 11kt
      < 1ft

    • Friday Night

      Friday Night:S wind 7 to 9 kt. A chance of showers and thunderstorms, mainly after 8pm. Seas 1 ft or less.

      S 9kt
      < 1ft

    • Saturday

      Saturday:SW wind 5 to 8 kt increasing to 10 to 13 kt in the afternoon. A slight chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 2pm. Seas 1 ft or less.

      ⇑SW 13kt
      < 1ft

    • Saturday Night

      Saturday Night:SSW wind 7 to 10 kt. Showers likely and possibly a thunderstorm before 8pm, then a chance of showers and thunderstorms, mainly between 8pm and 2am. Seas 1 ft or less.

      SSW 10kt
      < 1ft


Associated Zone Forecast which includes this point

Last Update: 8:32 pm EDT Aug 18, 2026
Forecast Valid: 12am EDT Aug 19, 2026-6pm EDT Aug 25, 2026

View Nearby Observations

Detailed Forecast


Overnight
W wind around 6 kt. Mostly clear. Seas 1 ft or less.
Wednesday
Variable winds less than 5 kt becoming S 5 to 9 kt in the afternoon. Sunny. Seas 1 ft or less.
Wednesday Night
S wind around 6 kt becoming variable and less than 5 kt in the evening. Mostly clear. Seas 1 ft or less.
Thursday
Variable winds less than 5 kt becoming S 5 to 10 kt in the afternoon. Sunny. Seas 1 ft or less.
Thursday Night
SSW wind 6 to 8 kt. Mostly clear. Seas 1 ft or less.
Friday
Variable winds less than 5 kt becoming S 6 to 11 kt in the morning. A slight chance of showers and thunderstorms after 2pm. Seas 1 ft or less.
Friday Night
S wind 7 to 9 kt. A chance of showers and thunderstorms, mainly after 8pm. Seas 1 ft or less.
Saturday
SW wind 5 to 8 kt increasing to 10 to 13 kt in the afternoon. A slight chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 2pm. Seas 1 ft or less.
Saturday Night
SSW wind 7 to 10 kt. Showers likely and possibly a thunderstorm before 8pm, then a chance of showers and thunderstorms, mainly between 8pm and 2am. 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 88 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 Aug 18, 2026
Forecast Valid: 12am EDT Aug 19, 2026-6pm EDT Aug 25, 2026
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