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Charleston Harbor MR

[NOTICE]

Last Update: 2:20 am EDT Jul 28, 2026
Forecast Valid: 2am EDT Jul 28, 2026-6pm EDT Aug 3, 2026

Tuesday

Variable winds less than 5 kt becoming SSW 8 to 13 kt in the morning. Winds could gust as high as 20 kt. Mostly sunny. Seas 1 ft or less.

Tuesday Night

SSW wind 10 to 14 kt becoming WSW after midnight. Winds could gust as high as 24 kt. Partly cloudy. Seas 1 ft or less.

Wednesday

W wind 7 to 9 kt. A chance of showers and thunderstorms, mainly after 5pm. Seas 1 ft or less.

Wednesday Night

Variable winds 5 kt or less. A chance of showers and thunderstorms before 8pm. Seas 1 ft or less.

Thursday

N wind 5 to 7 kt becoming S in the afternoon. Sunny. Seas 1 ft or less.

Thursday Night

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

Friday

Variable winds less than 5 kt becoming SSE 5 to 8 kt in the afternoon. Sunny. Seas 1 ft or less.

Friday Night

SSE wind 5 to 7 kt becoming variable and less than 5 kt after midnight. Partly cloudy. Seas 1 ft or less.

Saturday

Variable winds less than 5 kt becoming S 6 to 11 kt in the morning. A chance of showers and thunderstorms 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.