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Charleston Harbor MR

[NOTICE]

Last Update: 1:30 pm EST Feb 17, 2026
Forecast Valid: 4pm EST Feb 17, 2026-6pm EST Feb 24, 2026

Tonight

Variable winds less than 5 kt becoming SSW 5 to 7 kt after midnight. Mostly cloudy. Seas 1 ft or less.

Wednesday

SSW wind 5 to 8 kt increasing to 9 to 12 kt in the afternoon. Partly sunny. Seas 1 ft or less.

Wednesday Night

SW wind 5 to 8 kt. Mostly cloudy. Seas 1 ft or less.

Thursday

SW wind 5 to 8 kt increasing to 8 to 11 kt in the afternoon. A slight chance of showers. Seas 1 ft or less.

Thursday Night

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

Friday

SW wind 9 to 13 kt, with gusts as high as 20 kt. A chance of showers. Seas 1 ft or less.

Friday Night

SW wind 6 to 8 kt. A slight chance of showers. Seas 1 ft or less.

Saturday

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

Saturday Night

SSW wind 7 to 10 kt. A chance of showers, with thunderstorms also possible after 1am. 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 51 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.