| NWS Forecast for: 21NM NNE Altamaha Sound FL Atlantic Ocean Issued by: National Weather Service Charleston, SC Last Update: 8:32 pm EDT Aug 18, 2026 |  |
| Tonight: SW wind around 9 kt becoming W after midnight. Mostly clear. Seas around 2 ft. Wednesday: WNW wind around 6 kt becoming variable and less than 5 kt. Sunny. Seas around 2 ft. Wednesday Night: S wind 5 to 9 kt becoming variable and less than 5 kt after midnight. A slight chance of showers and thunderstorms before 10pm. Seas around 2 ft. Thursday: Variable winds less than 5 kt becoming SSE 5 to 9 kt in the afternoon. Sunny. Seas around 2 ft. Thursday Night: SSW wind 6 to 10 kt. Mostly clear. Seas around 2 ft. Friday: Variable winds less than 5 kt becoming SSE 7 to 12 kt in the afternoon. Sunny. Seas 1 to 2 ft. Friday Night: SSW wind 7 to 12 kt. A chance of showers and thunderstorms before 2am. Seas around 2 ft. Saturday: SW wind 7 to 10 kt becoming S in the afternoon. A chance of showers and thunderstorms, mainly after 2pm. Seas around 2 ft. Saturday Night: SW wind 8 to 10 kt. A chance of showers and thunderstorms before 2am. Seas around 2 ft. | |
| Marine Point Forecast: 31.62°N 81.12°W Associated Zone Forecast which includes this point | |
Visit your local NWS office at: https://www.weather.gov/chs |
