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Charleston Harbor MR

[NOTICE]

Last Update: 8:32 am EDT Sep 4, 2026
Forecast Valid: 8am EDT Sep 4, 2026-6pm EDT Sep 10, 2026

Today

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

Tonight

S wind 5 to 7 kt becoming SW after midnight. Mostly clear. Seas 1 ft or less.

Saturday

Variable winds less than 5 kt becoming SSW 5 to 10 kt in the afternoon. Sunny. Seas 1 ft or less.

Saturday Night

SW wind 6 to 9 kt. A chance of showers and thunderstorms, mainly after 2am. Seas 1 ft or less.

Sunday

W wind 5 to 7 kt becoming E in the afternoon. Showers and thunderstorms likely, mainly after 2pm. Seas 1 ft or less.

Sunday Night

ESE wind 6 to 8 kt becoming ENE after midnight. Showers and thunderstorms likely, mainly before 2am. Seas 1 ft or less.

Labor Day

ENE wind 11 to 14 kt increasing to 16 to 19 kt in the afternoon. A chance of showers and thunderstorms. Seas 1 ft or less.

Monday Night

ENE wind 11 to 13 kt, with gusts as high as 20 kt. A slight chance of showers and thunderstorms. Seas 1 ft or less.

Tuesday

ENE wind 11 to 15 kt, with gusts as high as 21 kt. A slight chance of showers, with thunderstorms also possible 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 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.