For More Weather Information:

Charleston, SC Local Forecast Office

Charleston Harbor MR

Marine Point Forecast

[NOTICE]

Today
⇑SSW 14kt
< 1ft
Tonight
SW 14kt
< 1ft
Saturday
SW 14kt
< 1ft
Saturday Night
SW 11kt
< 1ft
Sunday
W 6kt
< 1ft
Sunday Night
Light Wind
< 1ft
Monday
E 10kt
< 1ft
Monday Night
E 8kt
< 1ft
Tuesday
NE 11kt
< 1ft

Associated Zone Forecast which includes this point

Last Update: 8:32 am EDT Jul 10, 2026
Forecast Valid: 9am EDT Jul 10, 2026-6pm EDT Jul 16, 2026

View Nearby Observations

Detailed Forecast

Today

W wind 8 to 11 kt becoming SSW 11 to 14 kt in the afternoon. Winds could gust as high as 20 kt. A slight chance of showers and thunderstorms after 5pm. Seas 1 ft or less.

Tonight

SW wind 10 to 14 kt, with gusts as high as 21 kt. A chance of showers and thunderstorms, mainly before 11pm. Seas 1 ft or less.

Saturday

W wind 9 to 14 kt becoming SW in the afternoon. Winds could gust as high as 20 kt. A chance of showers and thunderstorms, mainly after 5pm. Seas 1 ft or less.

Saturday Night

SW wind 7 to 11 kt. A chance of showers and thunderstorms, mainly before 2am. Seas 1 ft or less.

Sunday

W wind around 6 kt becoming SSW in the afternoon. A slight chance of showers and thunderstorms before 8am, then showers and possibly a thunderstorm after 2pm. Seas 1 ft or less.

Sunday Night

Variable winds 5 kt or less. Showers and possibly a thunderstorm. Seas 1 ft or less.

Monday

N wind 5 to 10 kt becoming E in the afternoon. Showers and possibly a thunderstorm. Seas 1 ft or less.

Monday Night

E wind 6 to 8 kt becoming NNE after midnight. Showers and possibly a thunderstorm before 2am, then a chance of showers and thunderstorms after 2am. Seas 1 ft or less.

Tuesday

NNE wind 8 to 11 kt becoming ENE in the afternoon. Showers and thunderstorms likely, mainly 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:

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.