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Charleston, SC Local Forecast Office

Charleston Harbor MR

Marine Point Forecast

[NOTICE]

Overnight
WSW 11kt
< 1ft
Monday
W 12kt
< 1ft
Monday Night
SW 10kt
< 1ft
Tuesday
WSW 12kt
< 1ft
Tuesday Night
WSW 11kt
< 1ft
Wednesday
WSW 12kt
< 1ft
Wednesday Night
SW 12kt
< 1ft
Thursday
SSW 16kt
< 1ft
Thursday Night
SSW 15kt
< 1ft

Associated Zone Forecast which includes this point

Last Update: 8:31 pm EDT Jun 14, 2026
Forecast Valid: 11pm EDT Jun 14, 2026-6pm EDT Jun 21, 2026

View Nearby Observations

Detailed Forecast

Overnight

WSW wind around 11 kt. Mostly cloudy. Seas 1 ft or less.

Monday

W wind 9 to 12 kt. Mostly sunny. Seas 1 ft or less.

Monday Night

SW wind 8 to 10 kt becoming W after midnight. A chance of showers and thunderstorms, mainly between midnight and 3am. Seas 1 ft or less.

Tuesday

WSW wind 10 to 12 kt. A chance of showers, with thunderstorms also possible after 11am. Seas 1 ft or less.

Tuesday Night

WSW wind around 11 kt. A chance of showers and thunderstorms before 2am, then showers likely and possibly a thunderstorm between 2am and 5am, then showers likely after 5am. Seas 1 ft or less.

Wednesday

WSW wind around 12 kt. Showers likely, with thunderstorms also possible after 8am. Seas 1 ft or less.

Wednesday Night

SW wind 10 to 12 kt. A slight chance of showers before 8pm. Seas 1 ft or less.

Thursday

SSW wind 11 to 16 kt. Mostly sunny. Seas 1 ft or less.

Thursday Night

SSW wind 12 to 15 kt, with gusts as high as 21 kt. Partly cloudy. 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 84 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.