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Charleston, SC Local Forecast Office

Charleston Harbor MR

Marine Point Forecast

[NOTICE]

Overnight
S 7kt⇓
< 1ft
Sunday
⇑S 12kt
< 1ft
Sunday Night
SSW 11kt
< 1ft
Monday
⇑SSW 14kt
< 1ft
Monday Night
SSW 12kt
< 1ft
Tuesday
⇑SSW 14kt
< 1ft
Tuesday Night
SSW 12kt
< 1ft
Wednesday
SW 12kt
< 1ft
Wednesday Night
SSW 10kt
< 1ft

Associated Zone Forecast which includes this point

Last Update: 8:33 pm EDT Jul 4, 2026
Forecast Valid: 11pm EDT Jul 4, 2026-6pm EDT Jul 11, 2026

View Nearby Observations

Detailed Forecast

Overnight

S wind 5 to 7 kt becoming variable and less than 5 kt after midnight. Mostly clear. Seas 1 ft or less.

Sunday

Variable winds less than 5 kt becoming S 7 to 12 kt in the morning. A slight chance of showers and thunderstorms between 2pm and 3pm. Seas 1 ft or less.

Sunday Night

SSW wind 9 to 11 kt. A slight chance of showers and thunderstorms, mainly between 2am and 3am. Seas 1 ft or less.

Monday

WSW wind 7 to 10 kt becoming SSW 11 to 14 kt in the afternoon. A slight chance of showers and thunderstorms. Seas 1 ft or less.

Monday Night

SSW wind 10 to 12 kt. A chance of showers and thunderstorms. Seas 1 ft or less.

Tuesday

SSW wind 8 to 11 kt increasing to 11 to 14 kt in the afternoon. A slight chance of thunderstorms before 8am, then a slight chance of showers and thunderstorms after 2pm. Seas 1 ft or less.

Tuesday Night

SSW wind 8 to 12 kt. A chance of showers and thunderstorms, mainly after 8pm. Seas 1 ft or less.

Wednesday

W wind 7 to 12 kt becoming SW in the afternoon. A slight chance of thunderstorms before 8am, then a chance of showers and thunderstorms after 2pm. Seas 1 ft or less.

Wednesday Night

SSW wind 7 to 10 kt. A chance of showers and thunderstorms, mainly before 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.