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Charleston Harbor MR

[NOTICE]

Last Update: 8:32 pm EDT Oct 14, 2026
Forecast Valid: 12am EDT Oct 15, 2026-6pm EDT Oct 21, 2026

Overnight

Variable winds 5 kt or less. Mostly clear. Seas 1 ft or less.

Thursday

Variable winds less than 5 kt becoming S around 6 kt in the afternoon. Sunny. Seas 1 ft or less.

Thursday Night

Variable winds 5 kt or less. Partly cloudy. Seas 1 ft or less.

Friday

Variable winds less than 5 kt becoming SW 5 to 10 kt in the afternoon. Mostly cloudy through mid morning, then gradual clearing. Seas 1 ft or less.

Friday Night

SSW wind 9 to 11 kt becoming W after midnight. Partly cloudy. Seas 1 ft or less.

Saturday

NNW wind 15 to 19 kt. Mostly sunny. Seas 1 ft or less.

Saturday Night

NNE wind around 18 kt, with gusts as high as 26 kt. A slight chance of showers before 2am. Seas 1 ft or less.

Sunday

NNE wind 18 to 21 kt, with gusts as high as 27 kt. Sunny. Seas 1 ft or less.

Sunday Night

NE wind 15 to 18 kt, with gusts as high as 26 kt. Partly cloudy. Seas 1 ft or less.

Unless otherwise noted, waves 1 foot or less. Charleston Harbor water temperature 77 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.