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Charleston Harbor MR

[NOTICE]

Last Update: 2:37 am EDT Sep 13, 2026
Forecast Valid: 5am EDT Sep 13, 2026-6pm EDT Sep 19, 2026

Today

WSW wind 5 to 8 kt becoming SSW in the afternoon. A slight chance of showers and thunderstorms between 2pm and 3pm. Seas 1 ft or less.

Tonight

SSW wind 5 to 10 kt becoming WSW after midnight. Mostly clear. Seas 1 ft or less.

Monday

Variable winds 5 kt or less. Sunny. Seas 1 ft or less.

Monday Night

Variable winds less than 5 kt becoming ENE 5 to 8 kt after midnight. Partly cloudy. Seas 1 ft or less.

Tuesday

NE wind 14 to 19 kt, with gusts as high as 26 kt. Mostly sunny. Seas 1 ft or less.

Tuesday Night

NE wind 11 to 14 kt. Mostly clear. Seas 1 ft or less.

Wednesday

ENE wind 11 to 15 kt. Sunny. Seas 1 ft or less.

Wednesday Night

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

Thursday

ENE wind 10 to 15 kt. A slight chance of showers and thunderstorms after 2pm. 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.