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Charleston Harbor MR

[NOTICE]

Last Update: 8:31 am EDT Jul 4, 2026
Forecast Valid: 8am EDT Jul 4, 2026-6pm EDT Jul 10, 2026

Independence Day

Variable winds less than 5 kt becoming SSE 5 to 10 kt in the afternoon. Sunny. Seas 1 ft or less.

Tonight

S wind 5 to 9 kt becoming SSW after midnight. Partly cloudy. Seas 1 ft or less.

Sunday

Variable winds less than 5 kt becoming S 7 to 12 kt in the morning. Mostly sunny. Seas 1 ft or less.

Sunday Night

SSW wind around 10 kt. Partly cloudy. Seas 1 ft or less.

Monday

SSW wind 7 to 10 kt increasing to 10 to 13 kt in the afternoon. A slight chance of showers and thunderstorms after 2pm. Seas 1 ft or less.

Monday Night

SSW wind 10 to 12 kt. A slight chance of showers and thunderstorms before 2am. Seas 1 ft or less.

Tuesday

WSW wind 6 to 9 kt increasing to 10 to 13 kt in the afternoon. A slight chance of showers and thunderstorms after 2pm. Seas 1 ft or less.

Tuesday Night

SSW wind 9 to 12 kt. A chance of showers and thunderstorms, mainly between 8pm and 2am. Seas 1 ft or less.

Wednesday

W wind 6 to 9 kt becoming SSW 9 to 12 kt in the afternoon. 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.