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Charleston Harbor MR

[NOTICE]

Last Update: 2:35 am EDT Apr 21, 2026
Forecast Valid: 6am EDT Apr 21, 2026-6pm EDT Apr 27, 2026

Today

N wind 6 to 11 kt becoming E in the afternoon. Sunny. Seas 1 ft or less.

Tonight

ESE wind around 6 kt becoming variable and less than 5 kt in the evening. Mostly clear. Seas 1 ft or less.

Wednesday

Variable winds less than 5 kt becoming SSW 5 to 9 kt in the afternoon. Mostly sunny. Seas 1 ft or less.

Wednesday Night

SSW wind 6 to 8 kt. Mostly clear. Seas 1 ft or less.

Thursday

W wind 5 to 8 kt becoming SSW in the afternoon. Sunny. Seas 1 ft or less.

Thursday Night

SSW wind 6 to 8 kt. Mostly clear. Seas 1 ft or less.

Friday

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

Friday Night

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

Saturday

SW wind 5 to 10 kt. A slight chance of showers. Seas 1 ft or less.

Winds and waves higher in and near tstms.

*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.