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Charleston Harbor MR

[NOTICE]

Last Update: 8:32 am EDT Sep 22, 2026
Forecast Valid: 12pm EDT Sep 22, 2026-6pm EDT Sep 28, 2026

This Afternoon

E wind around 9 kt. A chance of showers and thunderstorms, mainly after 1pm. Seas 1 ft or less.

Tonight

ENE wind around 7 kt becoming NNE after midnight. A chance of showers and thunderstorms, mainly between 1am and 2am. Seas 1 ft or less.

Wednesday

NE wind 10 to 12 kt. A chance of showers, with thunderstorms also possible after 2pm. Seas 1 ft or less.

Wednesday Night

NNE wind around 12 kt, with gusts as high as 20 kt. A chance of showers and thunderstorms, mainly before 7pm. Seas 1 ft or less.

Thursday

NNE wind around 15 kt, with gusts as high as 22 kt. Partly sunny. Seas 1 ft or less.

Thursday Night

N wind 11 to 13 kt, with gusts as high as 21 kt. Partly cloudy. Seas 1 ft or less.

Friday

N wind 8 to 12 kt. Sunny. Seas 1 ft or less.

Friday Night

N wind around 6 kt. Mostly clear. Seas 1 ft or less.

Saturday

N wind 6 to 8 kt. 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 84 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.