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Charleston, SC Local Forecast Office

4NM WNW Rattlesnake Shoal MR

Marine Point Forecast

[NOTICE]

    • Tonight

      Tonight:Variable winds 5 kt or less. Partly cloudy. Seas 1 ft or less.

      Light Wind
      < 1ft

    • Saturday

      Saturday:Variable winds less than 5 kt becoming ESE around 6 kt in the afternoon. A chance of showers and thunderstorms, mainly after 3pm. Seas 1 ft or less.

      ⇑ESE 6kt
      < 1ft

    • Saturday Night

      Saturday Night:Variable winds 5 kt or less. A chance of showers and thunderstorms, mainly before 3am. Seas 1 ft or less.

      Light Wind
      < 1ft

    • Sunday

      Sunday:Variable winds less than 5 kt becoming NE around 6 kt in the afternoon. A slight chance of showers, then a chance of showers and thunderstorms after 8am. Seas 1 ft or less.

      ⇑NE 6kt
      < 1ft

    • Sunday Night

      Sunday Night:Variable winds 5 kt or less. A chance of showers and thunderstorms before 8pm. Seas 1 ft or less.

      Light Wind
      < 1ft

    • Monday

      Monday:Variable winds less than 5 kt becoming E 5 to 7 kt in the afternoon. A slight chance of showers, then a chance of showers and thunderstorms after 11am. Seas 1 ft or less.

      ⇑E 7kt
      < 1ft

    • Monday Night

      Monday Night:Variable winds 5 kt or less. A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 2am. Seas 1 ft or less.

      Light Wind
      < 1ft

    • Tuesday

      Tuesday:Variable winds less than 5 kt becoming ENE 5 to 9 kt in the morning. Showers likely and possibly a thunderstorm before 8am, then a chance of showers and thunderstorms between 8am and 2pm, then showers likely and possibly a thunderstorm after 2pm. Seas 1 ft or less.

      ⇑ENE 9kt
      < 1ft

    • Tuesday Night

      Tuesday Night:ENE wind 5 to 7 kt. Showers likely and possibly a thunderstorm before 8pm, then a chance of showers and thunderstorms after 8pm. Seas 1 ft or less.

      ENE 7kt
      < 1ft


Associated Zone Forecast which includes this point

Last Update: 4:47 pm EDT Sep 18, 2026
Forecast Valid: 8pm EDT Sep 18, 2026-6pm EDT Sep 25, 2026

View Nearby Observations

Detailed Forecast


Tonight
Variable winds 5 kt or less. Partly cloudy. Seas 1 ft or less.
Saturday
Variable winds less than 5 kt becoming ESE around 6 kt in the afternoon. A chance of showers and thunderstorms, mainly after 3pm. Seas 1 ft or less.
Saturday Night
Variable winds 5 kt or less. A chance of showers and thunderstorms, mainly before 3am. Seas 1 ft or less.
Sunday
Variable winds less than 5 kt becoming NE around 6 kt in the afternoon. A slight chance of showers, then a chance of showers and thunderstorms after 8am. Seas 1 ft or less.
Sunday Night
Variable winds 5 kt or less. A chance of showers and thunderstorms before 8pm. Seas 1 ft or less.
Monday
Variable winds less than 5 kt becoming E 5 to 7 kt in the afternoon. A slight chance of showers, then a chance of showers and thunderstorms after 11am. Seas 1 ft or less.
Monday Night
Variable winds 5 kt or less. A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 2am. Seas 1 ft or less.
Tuesday
Variable winds less than 5 kt becoming ENE 5 to 9 kt in the morning. Showers likely and possibly a thunderstorm before 8am, then a chance of showers and thunderstorms between 8am and 2pm, then showers likely and possibly a thunderstorm after 2pm. Seas 1 ft or less.
Tuesday Night
ENE wind 5 to 7 kt. Showers likely and possibly a thunderstorm before 8pm, then a chance of showers and thunderstorms after 8pm. Seas 1 ft or less.

Winds and seas higher in and near tstms.

*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: 32.78°N 79.82°W
Last Update: 4:47 pm EDT Sep 18, 2026
Forecast Valid: 8pm EDT Sep 18, 2026-6pm EDT Sep 25, 2026
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