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Charleston Harbor MR

[NOTICE]

Last Update: 2:45 am EDT Sep 16, 2026
Forecast Valid: 8am EDT Sep 16, 2026-6pm EDT Sep 22, 2026

Today

NNE wind 11 to 15 kt becoming ENE in the afternoon. Mostly sunny. Seas 1 ft or less.

Tonight

ENE wind 6 to 11 kt. Mostly clear. Seas 1 ft or less.

Thursday

NNE wind 7 to 10 kt becoming E in the afternoon. Sunny. Seas 1 ft or less.

Thursday Night

E wind around 6 kt becoming variable and less than 5 kt in the evening. Partly cloudy. Seas 1 ft or less.

Friday

Variable winds less than 5 kt becoming SSE 5 to 7 kt in the afternoon. Sunny. Seas 1 ft or less.

Friday Night

S wind around 6 kt becoming variable and less than 5 kt in the evening. Mostly clear. Seas 1 ft or less.

Saturday

Variable winds less than 5 kt becoming E 5 to 10 kt in the afternoon. A slight chance of showers and thunderstorms after 2pm. Seas 1 ft or less.

Saturday Night

E wind 5 to 7 kt becoming variable and less than 5 kt after midnight. A slight chance of showers and thunderstorms. Seas 1 ft or less.

Sunday

Variable winds less than 5 kt becoming E 5 to 8 kt in the morning. A chance of showers and thunderstorms, mainly before 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.