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Charleston Harbor MR

[NOTICE]

Last Update: 8:30 pm EDT Jun 30, 2026
Forecast Valid: 11pm EDT Jun 30, 2026-6pm EDT Jul 7, 2026

Overnight

E wind 7 to 9 kt. Mostly clear. Seas 1 ft or less.

Wednesday

NE wind 7 to 10 kt becoming E 10 to 13 kt in the afternoon. Mostly sunny. Seas 1 ft or less.

Wednesday Night

E wind 5 to 9 kt becoming variable and less than 5 kt after midnight. Partly cloudy. Seas 1 ft or less.

Thursday

NNE wind 5 to 8 kt becoming E 9 to 12 kt in the afternoon. A slight chance of showers before 2pm. Seas 1 ft or less.

Thursday Night

E wind 5 to 8 kt becoming variable and less than 5 kt after midnight. Partly cloudy. Seas 1 ft or less.

Friday

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

Friday Night

SSW wind 5 to 8 kt. Mostly clear. Seas 1 ft or less.

Independence Day

Variable winds less than 5 kt becoming S 7 to 12 kt in the afternoon. Sunny. Seas 1 ft or less.

Saturday Night

SSW wind 8 to 10 kt. Mostly clear. 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.