National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

For More Weather Information:

Charleston, SC Local Forecast Office

Charleston Harbor MR

Marine Point Forecast

[NOTICE]

    • Wednesday

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

      W 9kt
      < 1ft

    • Wednesday Night

      Wednesday Night:Variable winds 5 kt or less. A slight chance of showers and thunderstorms between 11pm and 1am. Seas 1 ft or less.

      Light Wind
      < 1ft

    • Thursday

      Thursday:N wind 5 to 8 kt becoming SSE in the afternoon. Sunny. Seas 1 ft or less.

      N 8kt
      < 1ft

    • Thursday Night

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

      Light Wind
      < 1ft

    • Friday

      Friday:Variable winds less than 5 kt becoming SE 5 to 8 kt in the afternoon. Sunny. Seas 1 ft or less.

      ⇑SE 8kt
      < 1ft

    • Friday Night

      Friday Night:SE wind 5 to 7 kt becoming variable and less than 5 kt after midnight. Mostly clear. Seas 1 ft or less.

      SE 7kt⇓
      < 1ft

    • Saturday

      Saturday:Variable winds less than 5 kt becoming SSE 7 to 12 kt in the morning. A slight chance of showers and thunderstorms after 2pm. Seas 1 ft or less.

      ⇑SSE 12kt
      < 1ft

    • Saturday Night

      Saturday Night:S wind 7 to 9 kt. A chance of showers and thunderstorms, mainly after 2am. Seas 1 ft or less.

      S 9kt
      < 1ft

    • Sunday

      Sunday:SSW wind 8 to 11 kt increasing to 14 to 17 kt in the afternoon. Winds could gust as high as 23 kt. A chance of showers and thunderstorms before 8am, then showers likely and possibly a thunderstorm between 8am and 2pm, then showers and thunderstorms likely after 2pm. Seas 1 ft or less.

      ⇑SSW 17kt
      < 1ft


Associated Zone Forecast which includes this point

Last Update: 8:32 pm EDT Jul 28, 2026
Forecast Valid: 1am EDT Jul 29, 2026-6pm EDT Aug 4, 2026

View Nearby Observations

Detailed Forecast


Wednesday
W wind 5 to 9 kt becoming SW in the afternoon. A slight chance of showers and thunderstorms between 2pm and 5pm. Seas 1 ft or less.
Wednesday Night
Variable winds 5 kt or less. A slight chance of showers and thunderstorms between 11pm and 1am. Seas 1 ft or less.
Thursday
N wind 5 to 8 kt becoming SSE in the afternoon. Sunny. Seas 1 ft or less.
Thursday Night
Variable winds 5 kt or less. Mostly clear. Seas 1 ft or less.
Friday
Variable winds less than 5 kt becoming SE 5 to 8 kt in the afternoon. Sunny. Seas 1 ft or less.
Friday Night
SE wind 5 to 7 kt becoming variable and less than 5 kt after midnight. Mostly clear. Seas 1 ft or less.
Saturday
Variable winds less than 5 kt becoming SSE 7 to 12 kt in the morning. A slight chance of showers and thunderstorms after 2pm. Seas 1 ft or less.
Saturday Night
S wind 7 to 9 kt. A chance of showers and thunderstorms, mainly after 2am. Seas 1 ft or less.
Sunday
SSW wind 8 to 11 kt increasing to 14 to 17 kt in the afternoon. Winds could gust as high as 23 kt. A chance of showers and thunderstorms before 8am, then showers likely and possibly a thunderstorm between 8am and 2pm, then showers and thunderstorms likely 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 87 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.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

Point Forecast: 32.76°N 79.9°W
Last Update: 8:32 pm EDT Jul 28, 2026
Forecast Valid: 1am EDT Jul 29, 2026-6pm EDT Aug 4, 2026
  Forecast Discussion
  Get as KML Get as XML

RADAR & SATELLITE IMAGES

 Link to Satellite Data