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Charleston, SC Local Forecast Office

Charleston Harbor MR

Marine Point Forecast

[NOTICE]

Today
S 11kt
< 1ft
Tonight
S 8kt
< 1ft
Thursday
⇑SSE 10kt
< 1ft
Thursday Night
SSE 7kt
< 1ft
Friday
⇑SE 10kt
< 1ft
Friday Night
SE 7kt⇓
< 1ft
Saturday
⇑SSE 9kt
< 1ft
Saturday Night
S 7kt
< 1ft
Sunday
⇑S 10kt
< 1ft

Associated Zone Forecast which includes this point

Last Update: 8:33 am EDT Aug 5, 2026
Forecast Valid: 10am EDT Aug 5, 2026-6pm EDT Aug 11, 2026

View Nearby Observations

Detailed Forecast

Today

S wind 7 to 11 kt. Showers and thunderstorms, mainly before 2pm. Seas 1 ft or less.

Tonight

S wind 6 to 8 kt. A chance of showers and thunderstorms, mainly after 2am. Seas 1 ft or less.

Thursday

Variable winds less than 5 kt becoming SSE 5 to 10 kt in the morning. Showers and thunderstorms likely before 1pm, then a slight chance of showers and thunderstorms after 2pm. Seas 1 ft or less.

Thursday Night

SSE wind 5 to 7 kt. A slight chance of showers and thunderstorms before 2am. Seas 1 ft or less.

Friday

Variable winds less than 5 kt becoming SE 5 to 10 kt in the morning. A slight chance of showers and thunderstorms between 8am and 2pm. Seas 1 ft or less.

Friday Night

SE wind 5 to 7 kt becoming variable and less than 5 kt after midnight. A chance of showers and thunderstorms after 2am. Seas 1 ft or less.

Saturday

Variable winds less than 5 kt becoming SSE 5 to 9 kt in the afternoon. A chance of showers and thunderstorms before 8am, then showers likely and possibly a thunderstorm between 8am and 2pm, then a chance of showers and thunderstorms after 2pm. Seas 1 ft or less.

Saturday Night

S wind around 7 kt. A chance of showers before 8pm, then a chance of showers and thunderstorms after 2am. Seas 1 ft or less.

Sunday

Variable winds less than 5 kt becoming S 5 to 10 kt in the afternoon. A chance of showers and thunderstorms. 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.