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Charleston, SC Local Forecast Office

Charleston Harbor MR

Marine Point Forecast

[NOTICE]

Tonight
WSW 15kt
< 1ft
Friday
⇑SSW 15kt
< 1ft
Friday Night
SSW 14kt
< 1ft
Saturday
⇑WSW 17kt
< 1ft
Saturday Night
SW 14kt⇓
< 1ft
Sunday
SW 8kt
< 1ft
Sunday Night
SW 6kt⇓
< 1ft
Monday
ENE 9kt
< 1ft
Monday Night
E 8kt
< 1ft

Associated Zone Forecast which includes this point

Last Update: 2:45 pm EDT Jul 9, 2026
Forecast Valid: 5pm EDT Jul 9, 2026-6pm EDT Jul 16, 2026

View Nearby Observations

Detailed Forecast

Tonight

WSW wind 10 to 15 kt, with gusts as high as 21 kt. Mostly clear. Seas 1 ft or less.

Friday

W wind 8 to 11 kt becoming SSW 12 to 15 kt in the afternoon. A slight chance of showers and thunderstorms after 5pm. Seas 1 ft or less.

Friday Night

SSW wind 10 to 14 kt, with gusts as high as 21 kt. A slight chance of showers and thunderstorms before 8pm. Seas 1 ft or less.

Saturday

WSW wind 9 to 12 kt increasing to 14 to 17 kt in the afternoon. Winds could gust as high as 23 kt. A chance of showers and thunderstorms after 2pm. Seas 1 ft or less.

Saturday Night

SW wind 11 to 14 kt decreasing to 7 to 10 kt after midnight. Winds could gust as high as 21 kt. A chance of showers and thunderstorms before 2am. Seas 1 ft or less.

Sunday

W wind 6 to 8 kt becoming SW in the afternoon. Showers and possibly a thunderstorm after 2pm. Seas 1 ft or less.

Sunday Night

SW wind around 6 kt becoming variable and less than 5 kt in the evening. Showers and possibly a thunderstorm. Seas 1 ft or less.

Monday

N wind 6 to 9 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 NE after midnight. Showers and possibly a thunderstorm, mainly before 2am, then a chance of showers and thunderstorms after 2am. 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 88 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.