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Charleston, SC Local Forecast Office

Charleston Harbor MR

Marine Point Forecast

[NOTICE]

Tonight
SSW 14kt
< 1ft
Thursday
SW 11kt
< 1ft
Thursday Night
SW 8kt⇓
< 1ft
Friday
⇑E 16kt
< 1ft
Friday Night
E 10kt
< 1ft
Saturday
⇑S 8kt
< 1ft
Saturday Night
Light Wind
< 1ft
Sunday
⇑E 13kt
< 1ft
Sunday Night
ESE 9kt
< 1ft

Associated Zone Forecast which includes this point

Last Update: 2:40 pm EDT May 27, 2026
Forecast Valid: 6pm EDT May 27, 2026-6pm EDT Jun 3, 2026

View Nearby Observations

Detailed Forecast

Tonight

SSW wind 10 to 14 kt, with gusts as high as 20 kt. A slight chance of showers and thunderstorms between 11pm and 2am. Seas 1 ft or less.

Thursday

SW wind 8 to 11 kt. A chance of showers and thunderstorms, mainly after 3pm. Seas 1 ft or less.

Thursday Night

SW wind 5 to 8 kt becoming variable and less than 5 kt after midnight. A chance of showers and thunderstorms before 1am, then a chance of showers and thunderstorms after 2am. Seas 1 ft or less.

Friday

E wind 10 to 13 kt increasing to 13 to 16 kt in the afternoon. Winds could gust as high as 22 kt. A chance of showers and thunderstorms. Seas 1 ft or less.

Friday Night

E wind 5 to 10 kt becoming SE after midnight. A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 2am. Seas 1 ft or less.

Saturday

Variable winds less than 5 kt becoming S 5 to 8 kt in the morning. Showers likely and possibly a thunderstorm before 2pm, then a chance of showers and thunderstorms after 2pm. Seas 1 ft or less.

Saturday Night

Variable winds 5 kt or less. A chance of showers and thunderstorms. Seas 1 ft or less.

Sunday

E wind 7 to 10 kt increasing to 10 to 13 kt in the afternoon. A chance of showers and thunderstorms. Seas 1 ft or less.

Sunday Night

ESE wind 7 to 9 kt. A chance of showers and thunderstorms, then showers likely after 2am. 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.