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Charleston Harbor MR

[NOTICE]

Last Update: 8:30 pm EDT Mar 18, 2026
Forecast Valid: 9pm EDT Mar 18, 2026-6pm EDT Mar 25, 2026

Tonight

NNE wind 6 to 8 kt. Mostly cloudy, then gradually becoming mostly clear. Seas 1 ft or less.

Thursday

NNE wind 6 to 9 kt becoming E 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 ESE around 6 kt in the afternoon. Sunny. Seas 1 ft or less.

Friday Night

Variable winds less than 5 kt becoming SW around 6 kt after midnight. Mostly clear. Seas 1 ft or less.

Saturday

WSW wind 7 to 9 kt. Sunny. Seas 1 ft or less.

Saturday Night

SW wind around 7 kt. Partly cloudy. Seas 1 ft or less.

Sunday

WSW wind 6 to 9 kt. Sunny. Seas 1 ft or less.

Sunday Night

SSW wind around 9 kt. Mostly clear. Seas 1 ft or less.

Unless otherwise noted, waves 1 foot or less. Charleston Harbor water temperature 60 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.