For More Weather Information:

Charleston Harbor MR

[NOTICE]

Last Update: 2:35 am EDT Apr 4, 2026
Forecast Valid: 5am EDT Apr 4, 2026-6pm EDT Apr 10, 2026

Today

Variable winds less than 5 kt becoming S 5 to 9 kt in the afternoon. Patchy fog before 9am. Seas 1 ft or less.

Tonight

S wind around 6 kt. Partly cloudy. Seas 1 ft or less.

Sunday

SSW wind 7 to 10 kt increasing to 10 to 13 kt in the afternoon. Showers likely and possibly a thunderstorm after 2pm. Seas 1 ft or less.

Sunday Night

SW wind 5 to 8 kt becoming WNW after midnight. Showers and possibly a thunderstorm. Seas 1 ft or less.

Monday

NNE wind 10 to 14 kt, with gusts as high as 20 kt. A chance of showers before 8am. Seas 1 ft or less.

Monday Night

Variable winds 5 kt or less. Cloudy. Seas 1 ft or less.

Tuesday

NE wind 8 to 12 kt. Mostly cloudy. Seas 1 ft or less.

Tuesday Night

NE wind 9 to 13 kt. Mostly cloudy. Seas 1 ft or less.

Wednesday

NE wind around 19 kt, with gusts as high as 28 kt. Partly sunny. 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 66 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.