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Charleston Harbor MR

[NOTICE]

Last Update: 2:35 am EDT Apr 18, 2026
Forecast Valid: 6am EDT Apr 18, 2026-6pm EDT Apr 24, 2026

Today

Variable winds less than 5 kt becoming S 5 to 10 kt in the morning. Mostly sunny. Seas 1 ft or less.

Tonight

S wind around 9 kt. Partly cloudy. Seas 1 ft or less.

Sunday

SW wind 7 to 10 kt becoming NW 10 to 13 kt in the afternoon. A slight chance of showers after 2pm. Seas 1 ft or less.

Sunday Night

NNE wind 9 to 13 kt. A slight chance of showers before 8pm. Seas 1 ft or less.

Monday

NNE wind 7 to 10 kt becoming ENE in the afternoon. Sunny. Seas 1 ft or less.

Monday Night

Variable winds less than 5 kt becoming NNW around 6 kt after midnight. Mostly clear. Seas 1 ft or less.

Tuesday

NNE wind 9 to 11 kt becoming E in the afternoon. Sunny. Seas 1 ft or less.

Tuesday Night

Variable winds 5 kt or less. Mostly clear. Seas 1 ft or less.

Wednesday

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

*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.