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Charleston, SC Local Forecast Office

Charleston Harbor MR

Marine Point Forecast

[NOTICE]

Today
⇑SSE 8kt
< 1ft
Tonight
Light Wind
< 1ft
Tuesday
⇑E 8kt
< 1ft
Tuesday Night
Light Wind
< 1ft
Wednesday
⇑ESE 7kt
< 1ft
Wednesday Night
Light Wind
< 1ft
Thursday
⇑SSW 9kt
< 1ft
Thursday Night
SSW 9kt
< 1ft
Friday
⇑S 10kt
< 1ft

Associated Zone Forecast which includes this point

Last Update: 2:35 am EDT Jul 13, 2026
Forecast Valid: 6am EDT Jul 13, 2026-6pm EDT Jul 19, 2026

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Detailed Forecast

Today

Variable winds less than 5 kt becoming SSE 5 to 8 kt in the afternoon. A chance of showers and thunderstorms, mainly after 2pm. Seas 1 ft or less.

Tonight

Variable winds 5 kt or less. Showers and thunderstorms before 1am, then showers likely and possibly a thunderstorm between 1am and 5am, then a chance of showers and thunderstorms after 5am. Seas 1 ft or less.

Tuesday

Variable winds less than 5 kt becoming E 5 to 8 kt in the afternoon. Showers and thunderstorms, mainly before 5pm, then showers likely and possibly a thunderstorm after 5pm. Seas 1 ft or less.

Tuesday Night

Variable winds 5 kt or less. A chance of showers and thunderstorms, mainly before 2am. Seas 1 ft or less.

Wednesday

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

Wednesday Night

Variable winds 5 kt or less. A chance of showers and thunderstorms before 8pm. Seas 1 ft or less.

Thursday

Variable winds less than 5 kt becoming SSW 5 to 9 kt in the afternoon. Sunny. Seas 1 ft or less.

Thursday Night

SSW wind 5 to 9 kt becoming WSW after midnight. Mostly clear. Seas 1 ft or less.

Friday

Variable winds less than 5 kt becoming S 5 to 10 kt in the afternoon. Sunny. 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.