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Charleston, SC Local Forecast Office

Charleston Harbor MR

Marine Point Forecast

[NOTICE]

    • This Afternoon

      This Afternoon:S wind around 11 kt. Sunny. Seas 1 ft or less.

      S 11kt
      < 1ft

    • Tonight

      Tonight:S wind 8 to 10 kt becoming WSW in the evening. A chance of showers and thunderstorms before 1am, then showers likely and possibly a thunderstorm between 1am and 3am, then a chance of showers and thunderstorms after 3am. Seas 1 ft or less.

      S 10kt
      < 1ft

    • Saturday

      Saturday:SSW wind 6 to 11 kt. A chance of showers and thunderstorms, mainly after 1pm. Seas 1 ft or less.

      SSW 11kt
      < 1ft

    • Saturday Night

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

      SSW 9kt
      < 1ft

    • Sunday

      Sunday:W wind 5 to 9 kt becoming SW in the afternoon. A slight chance of showers and thunderstorms after 2pm. Seas 1 ft or less.

      SW 9kt
      < 1ft

    • Sunday Night

      Sunday Night:SW wind 5 to 8 kt. A slight chance of showers and thunderstorms before 8pm. Seas 1 ft or less.

      SW 8kt
      < 1ft

    • Monday

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

      ⇑SSW 9kt
      < 1ft

    • Monday Night

      Monday Night:SW wind 5 to 7 kt. A chance of showers and thunderstorms before 2am. Seas 1 ft or less.

      SW 7kt
      < 1ft

    • Tuesday

      Tuesday:Variable winds less than 5 kt becoming S 5 to 9 kt in the afternoon. A chance of showers and thunderstorms, mainly after 2pm. Seas 1 ft or less.

      ⇑S 9kt
      < 1ft


Associated Zone Forecast which includes this point

Last Update: 2:35 pm EDT Aug 21, 2026
Forecast Valid: 3pm EDT Aug 21, 2026-6pm EDT Aug 28, 2026

View Nearby Observations

Detailed Forecast


This Afternoon
S wind around 11 kt. Sunny. Seas 1 ft or less.
Tonight
S wind 8 to 10 kt becoming WSW in the evening. A chance of showers and thunderstorms before 1am, then showers likely and possibly a thunderstorm between 1am and 3am, then a chance of showers and thunderstorms after 3am. Seas 1 ft or less.
Saturday
SSW wind 6 to 11 kt. A chance of showers and thunderstorms, mainly after 1pm. Seas 1 ft or less.
Saturday Night
SSW wind 6 to 9 kt becoming W after midnight. A chance of showers and thunderstorms, mainly before 1am. Seas 1 ft or less.
Sunday
W wind 5 to 9 kt becoming SW in the afternoon. A slight chance of showers and thunderstorms after 2pm. Seas 1 ft or less.
Sunday Night
SW wind 5 to 8 kt. A slight chance of showers and thunderstorms before 8pm. Seas 1 ft or less.
Monday
Variable winds less than 5 kt becoming SSW 5 to 9 kt in the afternoon. Sunny. Seas 1 ft or less.
Monday Night
SW wind 5 to 7 kt. A chance of showers and thunderstorms before 2am. Seas 1 ft or less.
Tuesday
Variable winds less than 5 kt becoming S 5 to 9 kt in the afternoon. A chance of showers and thunderstorms, mainly 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 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: 2:35 pm EDT Aug 21, 2026
Forecast Valid: 3pm EDT Aug 21, 2026-6pm EDT Aug 28, 2026
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