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Charleston Harbor MR

[NOTICE]

Last Update: 1:36 pm EST Mar 6, 2026
Forecast Valid: 3pm EST Mar 6, 2026-6pm EDT Mar 13, 2026

This Afternoon

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

Tonight

Variable winds 5 kt or less. Patchy dense fog between 10pm and 11pm, then Widespread dense fog, mainly after 3am. Seas 1 ft or less.

Saturday

Variable winds less than 5 kt becoming S 5 to 7 kt in the afternoon. Widespread dense fog, mainly before 8am. Seas 1 ft or less.

Saturday Night

Variable winds less than 5 kt becoming SSW 5 to 7 kt in the evening. Partly cloudy. Seas 1 ft or less.

Sunday

SW wind 7 to 11 kt. A chance of showers after 1pm. Seas 1 ft or less.

Sunday Night

SSW wind 5 to 7 kt. A chance of showers and thunderstorms. Seas 1 ft or less.

Monday

Variable winds less than 5 kt becoming SSW 5 to 9 kt in the morning. A slight chance of showers. Seas 1 ft or less.

Monday Night

SSW wind around 6 kt. A slight chance of showers. Seas 1 ft or less.

Tuesday

Variable winds less than 5 kt becoming SSW 5 to 9 kt in the morning. Mostly 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 57 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.