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Charleston, SC Local Forecast Office

Charleston Harbor MR

Marine Point Forecast

[NOTICE]

Today
⇑SSW 13kt
< 1ft
Tonight
WSW 12kt
< 1ft
Monday
W 11kt
< 1ft
Monday Night
WSW 10kt
< 1ft
Tuesday
WSW 12kt
< 1ft
Tuesday Night
WSW 11kt
< 1ft
Wednesday
WSW 12kt
< 1ft
Wednesday Night
SW 11kt
< 1ft
Thursday
WSW 16kt
< 1ft

Associated Zone Forecast which includes this point

Last Update: 2:36 am EDT Jun 14, 2026
Forecast Valid: 6am EDT Jun 14, 2026-6pm EDT Jun 20, 2026

View Nearby Observations

Detailed Forecast

Today

SSW wind 5 to 8 kt increasing to 10 to 13 kt in the afternoon. A chance of showers and thunderstorms, mainly after 3pm. Seas 1 ft or less.

Tonight

WSW wind 10 to 12 kt. A chance of showers and thunderstorms, mainly before 9pm. Seas 1 ft or less.

Monday

W wind 9 to 11 kt. A chance of showers and thunderstorms after 4pm. Seas 1 ft or less.

Monday Night

WSW wind around 10 kt. A chance of showers and thunderstorms, mainly between 8pm and 2am. Seas 1 ft or less.

Tuesday

WSW wind 8 to 12 kt. A chance of showers before 11am, then a chance of showers and thunderstorms between 11am and 2pm, then showers likely and possibly a thunderstorm after 2pm. Seas 1 ft or less.

Tuesday Night

WSW wind around 11 kt. Showers likely and possibly a thunderstorm before 8pm, then a chance of showers and thunderstorms between 8pm and 2am, then showers likely and possibly a thunderstorm after 2am. Seas 1 ft or less.

Wednesday

WSW wind around 12 kt. Showers likely and possibly a thunderstorm before 8am, then a chance of showers and thunderstorms, mainly between 8am and 2pm. Seas 1 ft or less.

Wednesday Night

SW wind around 11 kt. A slight chance of showers and thunderstorms before 8pm. Seas 1 ft or less.

Thursday

WSW wind 12 to 16 kt, with gusts as high as 23 kt. 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 82 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.