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Charleston, SC Local Forecast Office

Charleston Harbor MR

Marine Point Forecast

[NOTICE]

Tonight
Light Wind
< 1ft
Sunday
⇑S 7kt
< 1ft
Sunday Night
Light Wind
< 1ft
Monday
⇑ESE 7kt
< 1ft
Monday Night
SSE 6kt⇓
< 1ft
Tuesday
⇑SSW 13kt
< 1ft
Tuesday Night
SSW 14kt
< 1ft
Wednesday
SW 12kt
< 1ft
Wednesday Night
SW 8kt
< 1ft

Associated Zone Forecast which includes this point

Last Update: 8:32 pm EDT Jul 25, 2026
Forecast Valid: 9pm EDT Jul 25, 2026-6pm EDT Aug 1, 2026

View Nearby Observations

Detailed Forecast

Tonight

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

Sunday

Variable winds less than 5 kt becoming S 5 to 7 kt in the afternoon. Showers and thunderstorms, mainly before 5pm, then showers likely and possibly a thunderstorm after 5pm. Seas 1 ft or less.

Sunday Night

Variable winds 5 kt or less. Showers and thunderstorms likely, mainly before 1am. Seas 1 ft or less.

Monday

Variable winds less than 5 kt becoming ESE 5 to 7 kt in the afternoon. A slight chance of showers and thunderstorms after 2pm. Seas 1 ft or less.

Monday Night

SSE wind around 6 kt becoming variable and less than 5 kt in the evening. A slight chance of showers and thunderstorms before 8pm. Seas 1 ft or less.

Tuesday

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

Tuesday Night

SSW wind around 14 kt, with gusts as high as 21 kt. Partly cloudy. Seas 1 ft or less.

Wednesday

SW wind 10 to 12 kt. A chance of showers and thunderstorms after 2pm. Seas 1 ft or less.

Wednesday Night

SW wind 5 to 8 kt becoming W after midnight. A chance of showers and thunderstorms 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 87 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.