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Charleston Harbor MR

[NOTICE]

Last Update: 8:30 am EDT Jul 20, 2026
Forecast Valid: 12pm EDT Jul 20, 2026-6pm EDT Jul 26, 2026

This Afternoon

S wind 10 to 13 kt. Mostly sunny. Seas 1 ft or less.

Tonight

S wind around 12 kt. Partly cloudy. Seas 1 ft or less.

Tuesday

SSW wind 10 to 13 kt increasing to 14 to 17 kt in the afternoon. Winds could gust as high as 24 kt. Sunny. Seas 1 ft or less.

Tuesday Night

S wind around 16 kt, with gusts as high as 24 kt. Partly cloudy. Seas 1 ft or less.

Wednesday

SW wind 13 to 17 kt, with gusts as high as 23 kt. Mostly sunny. Seas 1 ft or less.

Wednesday Night

S wind 12 to 14 kt, with gusts as high as 20 kt. A chance of showers and thunderstorms. Seas 1 ft or less.

Thursday

SW wind 8 to 13 kt. A chance of showers and thunderstorms. Seas 1 ft or less.

Thursday Night

SSW wind 7 to 10 kt. A chance of showers and thunderstorms. Seas 1 ft or less.

Friday

WSW wind 5 to 10 kt becoming SSE in the afternoon. A chance of showers and thunderstorms. 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 87 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.