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Charleston, SC Local Forecast Office

Charleston Harbor MR

Marine Point Forecast

[NOTICE]

Tonight
NE 14kt
< 1ft
Tuesday
ENE 15kt
< 1ft
Tuesday Night
E 11kt
< 1ft
Wednesday
SE 10kt
< 1ft
Wednesday Night
S 7kt
< 1ft
Thursday
WNW 9kt
< 1ft
Thursday Night
⇑N 7kt
< 1ft
Friday
NNE 8kt
< 1ft
Friday Night
S 6kt⇓
< 1ft

Associated Zone Forecast which includes this point

Last Update: 8:32 pm EDT May 11, 2026
Forecast Valid: 10pm EDT May 11, 2026-6pm EDT May 18, 2026

View Nearby Observations

Detailed Forecast

Tonight

NE wind 9 to 14 kt, with gusts as high as 20 kt. Cloudy. Seas 1 ft or less.

Tuesday

ENE wind around 15 kt, with gusts as high as 22 kt. Mostly cloudy. Seas 1 ft or less.

Tuesday Night

E wind 6 to 11 kt. Mostly cloudy. Seas 1 ft or less.

Wednesday

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

Wednesday Night

S wind around 7 kt becoming WSW after midnight. A slight chance of thunderstorms before 8pm, then a slight chance of showers and thunderstorms between 8pm and 11pm, then a slight chance of showers after 11pm. Seas 1 ft or less.

Thursday

WNW wind 7 to 9 kt. Sunny. Seas 1 ft or less.

Thursday Night

Variable winds less than 5 kt becoming N 5 to 7 kt after midnight. Mostly clear. Seas 1 ft or less.

Friday

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

Friday Night

S wind around 6 kt becoming variable and less than 5 kt after midnight. Mostly clear. 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.