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Charleston, SC Local Forecast Office

Charleston Harbor MR

Marine Point Forecast

[NOTICE]

Today
⇑SE 7kt
< 1ft
Tonight
Light Wind
< 1ft
Tuesday
⇑S 13kt
< 1ft
Tuesday Night
SSW 14kt
< 1ft
Wednesday
WSW 10kt
< 1ft
Wednesday Night
SSW 8kt
< 1ft
Thursday
N 7kt
< 1ft
Thursday Night
Light Wind
< 1ft
Friday
⇑SSE 9kt
< 1ft

Associated Zone Forecast which includes this point

Last Update: 2:35 am EDT Jul 27, 2026
Forecast Valid: 6am EDT Jul 27, 2026-6pm EDT Aug 2, 2026

View Nearby Observations

Detailed Forecast

Today

Variable winds less than 5 kt becoming SE 5 to 7 kt in the afternoon. A slight chance of showers and thunderstorms after 5pm. Seas 1 ft or less.

Tonight

Variable winds 5 kt or less. A slight chance of showers and thunderstorms, mainly between midnight and 2am. Seas 1 ft or less.

Tuesday

Variable winds less than 5 kt becoming S 8 to 13 kt in the afternoon. Sunny. Seas 1 ft or less.

Tuesday Night

SSW wind 10 to 14 kt becoming WSW after midnight. Winds could gust as high as 21 kt. A slight chance of showers and thunderstorms after 2am. Seas 1 ft or less.

Wednesday

W wind 8 to 10 kt becoming WSW in the afternoon. A slight chance of showers and thunderstorms before 8am, then a chance of showers and thunderstorms after 2pm. Seas 1 ft or less.

Wednesday Night

SSW wind 5 to 8 kt becoming W after midnight. A chance of showers and thunderstorms before 2am. Seas 1 ft or less.

Thursday

N wind 5 to 7 kt becoming E in the afternoon. Sunny. Seas 1 ft or less.

Thursday Night

Variable winds 5 kt or less. Mostly clear. Seas 1 ft or less.

Friday

Variable winds less than 5 kt becoming SSE 5 to 9 kt in the afternoon. Sunny. 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 86 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.