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Charleston Harbor MR

[NOTICE]

Last Update: 8:30 pm EDT Sep 14, 2026
Forecast Valid: 11pm EDT Sep 14, 2026-6pm EDT Sep 21, 2026

Overnight

Variable winds less than 5 kt becoming ENE around 6 kt after midnight. Partly cloudy. Seas 1 ft or less.

Tuesday

ENE wind 13 to 16 kt increasing to 16 to 19 kt in the afternoon. Mostly sunny. Seas 1 ft or less.

Tuesday Night

ENE wind 9 to 12 kt. Mostly clear. Seas 1 ft or less.

Wednesday

ENE wind 10 to 15 kt. Sunny. Seas 1 ft or less.

Wednesday Night

NE wind 8 to 11 kt. Mostly clear. Seas 1 ft or less.

Thursday

ENE wind 10 to 13 kt increasing to 13 to 16 kt in the afternoon. Sunny. Seas 1 ft or less.

Thursday Night

ENE wind 5 to 10 kt. A chance of showers and thunderstorms after 2am. Seas 1 ft or less.

Friday

NNE wind 6 to 8 kt becoming E in the afternoon. A chance of showers and thunderstorms, mainly before 8am. Seas 1 ft or less.

Friday Night

Variable winds 5 kt or less. Partly cloudy. 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 85 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.