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Charleston, SC Local Forecast Office

21NM NNE Altamaha Sound FL

Marine Point Forecast

[NOTICE]
    • Sunday

      Sunday:W wind around 6 kt becoming variable and less than 5 kt. A chance of showers and thunderstorms, mainly after 4pm.   Seas 1 to 2 ft.

      W 6kt⇓
      1-2ft

    • Sunday Night

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

      Light Wind
      1ft

    • Monday

      Monday:Variable winds less than 5 kt becoming E around 6 kt in the afternoon. A chance of showers and thunderstorms after 2pm.   Seas around 1 ft.

      ⇑E 6kt
      1ft

    • Monday Night

      Monday Night:ESE wind around 6 kt becoming variable and less than 5 kt after midnight. A chance of showers and thunderstorms, mainly before 8pm.   Seas around 1 ft.

      ESE 6kt⇓
      1ft

    • Tuesday

      Tuesday:Variable winds less than 5 kt becoming ESE 5 to 10 kt in the morning. A chance of showers and thunderstorms after 8am.   Seas around 1 ft.

      ⇑ESE 10kt
      1ft

    • Tuesday Night

      Tuesday Night:SSE wind around 9 kt. A slight chance of showers and thunderstorms.   Seas around 2 ft.

      SSE 9kt
      2ft

    • Wednesday

      Wednesday:S wind 7 to 12 kt. Showers likely and possibly a thunderstorm before 2pm, then a chance of showers and thunderstorms after 2pm.   Seas around 2 ft.

      S 12kt
      2ft

    • Wednesday Night

      Wednesday Night:S wind 10 to 12 kt. A chance of showers and thunderstorms, mainly before 8pm.   Seas 2 to 3 ft.

      S 12kt
      2-3ft

    • Thursday

      Thursday:S wind 8 to 11 kt. A chance of showers and thunderstorms.   Seas around 2 ft.

      S 11kt
      2ft


Associated Zone Forecast which includes this point

Last Update: 2:12 am EDT Jul 13, 2025
Forecast Valid: 3am EDT Jul 13, 2025-6pm EDT Jul 19, 2025

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Detailed Forecast


Sunday
W wind around 6 kt becoming variable and less than 5 kt. A chance of showers and thunderstorms, mainly after 4pm. Seas 1 to 2 ft.
Sunday Night
Variable winds 5 kt or less. A chance of showers and thunderstorms, mainly before 8pm. Seas around 1 ft.
Monday
Variable winds less than 5 kt becoming E around 6 kt in the afternoon. A chance of showers and thunderstorms after 2pm. Seas around 1 ft.
Monday Night
ESE wind around 6 kt becoming variable and less than 5 kt after midnight. A chance of showers and thunderstorms, mainly before 8pm. Seas around 1 ft.
Tuesday
Variable winds less than 5 kt becoming ESE 5 to 10 kt in the morning. A chance of showers and thunderstorms after 8am. Seas around 1 ft.
Tuesday Night
SSE wind around 9 kt. A slight chance of showers and thunderstorms. Seas around 2 ft.
Wednesday
S wind 7 to 12 kt. Showers likely and possibly a thunderstorm before 2pm, then a chance of showers and thunderstorms after 2pm. Seas around 2 ft.
Wednesday Night
S wind 10 to 12 kt. A chance of showers and thunderstorms, mainly before 8pm. Seas 2 to 3 ft.
Thursday
S wind 8 to 11 kt. A chance of showers and thunderstorms. Seas around 2 ft.

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: 31.62°N 81.12°W
Last Update: 2:12 am EDT Jul 13, 2025
Forecast Valid: 3am EDT Jul 13, 2025-6pm EDT Jul 19, 2025
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