For More Weather Information:

Charleston, SC Local Forecast Office

Charleston Harbor MR

Marine Point Forecast

[NOTICE]

Today
⇑S 8kt
< 1ft
Tonight
SSW 8kt
< 1ft
Thursday
SSW 8kt
< 1ft
Thursday Night
SSW 9kt
< 1ft
Friday
SSW 10kt
< 1ft
Friday Night
SSW 8kt
< 1ft
Saturday
SW 10kt
< 1ft
Saturday Night
SSW 8kt
< 1ft
Sunday
ENE 9kt
< 1ft

Associated Zone Forecast which includes this point

Last Update: 2:30 am EDT Apr 22, 2026
Forecast Valid: 7am EDT Apr 22, 2026-6pm EDT Apr 28, 2026

View Nearby Observations

Detailed Forecast

Today

Variable winds less than 5 kt becoming S 5 to 8 kt in the afternoon. Partly sunny. Seas 1 ft or less.

Tonight

SSW wind 6 to 8 kt. Mostly clear. Seas 1 ft or less.

Thursday

W wind 5 to 8 kt becoming SSW in the afternoon. Sunny. Seas 1 ft or less.

Thursday Night

SSW wind 6 to 9 kt. Mostly clear. Seas 1 ft or less.

Friday

WSW wind 5 to 10 kt becoming SSW in the afternoon. Sunny. Seas 1 ft or less.

Friday Night

SSW wind around 8 kt. Mostly clear. Seas 1 ft or less.

Saturday

SW wind 6 to 10 kt. A slight chance of showers after 2pm. Seas 1 ft or less.

Saturday Night

SSW wind 6 to 8 kt becoming WSW after midnight. A slight chance of showers and thunderstorms before 8pm, then showers likely and possibly a thunderstorm between 8pm and 2am, then a chance of showers after 2am. Seas 1 ft or less.

Sunday

NNW wind 5 to 9 kt becoming ENE in the afternoon. A chance of showers, with thunderstorms also possible after 2pm. Seas 1 ft or less.

Winds and waves higher in and near tstms.

*Notices:

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.
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.