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Charleston, SC Local Forecast Office

Charleston Harbor MR

Marine Point Forecast

[NOTICE]

Memorial Day
S 12kt
< 1ft
Tonight
S 8kt
< 1ft
Tuesday
S 12kt
< 1ft
Tuesday Night
S 8kt
< 1ft
Wednesday
SSW 12kt
< 1ft
Wednesday Night
SSW 9kt
< 1ft
Thursday
WSW 8kt
< 1ft
Thursday Night
Light Wind
< 1ft
Friday
E 11kt
< 1ft

Associated Zone Forecast which includes this point

Last Update: 8:32 am EDT May 25, 2026
Forecast Valid: 11am EDT May 25, 2026-6pm EDT May 31, 2026

View Nearby Observations

Detailed Forecast

Memorial Day

S wind 10 to 12 kt. A slight chance of showers and thunderstorms before 2pm, then a slight chance of showers and thunderstorms after 3pm. Seas 1 ft or less.

Tonight

S wind around 8 kt. A slight chance of showers and thunderstorms. Seas 1 ft or less.

Tuesday

S wind 8 to 12 kt. A chance of showers and thunderstorms, mainly between 1pm and 2pm. Seas 1 ft or less.

Tuesday Night

S wind around 8 kt. A slight chance of showers after 2am. Seas 1 ft or less.

Wednesday

SSW wind 8 to 12 kt. A chance of showers, with thunderstorms also possible after 11am. Seas 1 ft or less.

Wednesday Night

SSW wind 7 to 9 kt. A chance of showers and thunderstorms, mainly before 8pm. Seas 1 ft or less.

Thursday

WSW wind 6 to 8 kt. A slight chance of showers and thunderstorms between 8am and 2pm, then showers likely and possibly a thunderstorm after 2pm. Seas 1 ft or less.

Thursday Night

Variable winds 5 kt or less. Showers likely and possibly a thunderstorm before 8pm, then a chance of showers and thunderstorms between 8pm and 2am, then a slight chance of showers after 2am. Seas 1 ft or less.

Friday

ENE wind 6 to 11 kt becoming ESE in the afternoon. A slight chance of showers, then a chance of showers and thunderstorms after 2pm. 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.