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Charleston, SC Local Forecast Office

Charleston Harbor MR

Marine Point Forecast

[NOTICE]

This Afternoon
ENE 9kt
< 1ft
Tonight
ENE 6kt⇓
< 1ft
Wednesday
⇑ESE 6kt
< 1ft
Wednesday Night
Light Wind
< 1ft
Thursday
⇑S 9kt
< 1ft
Thursday Night
WSW 8kt
< 1ft
Friday
⇑S 10kt
< 1ft
Friday Night
SW 9kt
< 1ft
Saturday
⇑SSW 14kt
< 1ft

Associated Zone Forecast which includes this point

Last Update: 8:32 am EDT Jul 14, 2026
Forecast Valid: 12pm EDT Jul 14, 2026-6pm EDT Jul 20, 2026

View Nearby Observations

Detailed Forecast

This Afternoon

ENE wind 6 to 9 kt. Showers likely and possibly a thunderstorm before 2pm, then showers and thunderstorms likely between 2pm and 5pm, then showers likely and possibly a thunderstorm after 5pm. Seas 1 ft or less.

Tonight

ENE wind around 6 kt becoming variable and less than 5 kt in the evening. A chance of showers and thunderstorms, mainly before midnight. Seas 1 ft or less.

Wednesday

Variable winds less than 5 kt becoming ESE around 6 kt in the afternoon. A chance of showers and thunderstorms, mainly between 2pm and 4pm. Seas 1 ft or less.

Wednesday Night

Variable winds 5 kt or less. A slight chance of showers and thunderstorms before 7pm. Seas 1 ft or less.

Thursday

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

Thursday Night

WSW wind 5 to 8 kt. Mostly clear. Seas 1 ft or less.

Friday

Variable winds less than 5 kt becoming S 5 to 10 kt in the afternoon. Sunny. Seas 1 ft or less.

Friday Night

SW wind 5 to 9 kt. Mostly clear. Seas 1 ft or less.

Saturday

Variable winds less than 5 kt becoming SSW 9 to 14 kt in the morning. A slight chance of showers and thunderstorms after 2pm. 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 86 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.