For More Weather Information:

Charleston Harbor MR

[NOTICE]

Last Update: 8:30 pm EDT Aug 11, 2026
Forecast Valid: 11pm EDT Aug 11, 2026-6pm EDT Aug 18, 2026

Overnight

W wind around 8 kt. Mostly clear. Seas 1 ft or less.

Wednesday

W wind around 8 kt. Sunny. Seas 1 ft or less.

Wednesday Night

SW wind 5 to 9 kt. Mostly clear. Seas 1 ft or less.

Thursday

W wind 5 to 9 kt becoming SW in the afternoon. Sunny. Seas 1 ft or less.

Thursday Night

SW wind 7 to 10 kt. Partly cloudy. Seas 1 ft or less.

Friday

SSW wind 5 to 8 kt increasing to 8 to 11 kt in the afternoon. Mostly sunny. Seas 1 ft or less.

Friday Night

SSW wind 8 to 11 kt. Partly cloudy. Seas 1 ft or less.

Saturday

W wind 5 to 10 kt becoming SSE in the afternoon. A chance of showers and thunderstorms after 2pm. Seas 1 ft or less.

Saturday Night

SE wind 5 to 8 kt becoming variable and less than 5 kt after midnight. A chance of showers and thunderstorms before 2am. 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.