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Charleston, SC Local Forecast Office

Charleston Harbor MR

Marine Point Forecast

[NOTICE]

Tonight
SW 10kt
< 1ft
Saturday
⇑SSW 10kt
< 1ft
Saturday Night
SSW 9kt
< 1ft
Sunday
⇑SW 14kt
< 1ft
Sunday Night
SW 13kt
< 1ft
Monday
WSW 13kt
< 1ft
Monday Night
WSW 11kt
< 1ft
Tuesday
W 11kt
< 1ft
Tuesday Night
WSW 9kt
< 1ft

Associated Zone Forecast which includes this point

Last Update: 3:06 pm EDT Jun 12, 2026
Forecast Valid: 7pm EDT Jun 12, 2026-6pm EDT Jun 19, 2026

View Nearby Observations

Detailed Forecast

Tonight

SW wind 7 to 10 kt. Partly cloudy. Seas 1 ft or less.

Saturday

Variable winds less than 5 kt becoming SSW 5 to 10 kt in the afternoon. A chance of showers and thunderstorms, mainly between 3pm and 5pm. Seas 1 ft or less.

Saturday Night

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

Sunday

SW wind 6 to 9 kt increasing to 11 to 14 kt in the afternoon. Winds could gust as high as 20 kt. A slight chance of showers and thunderstorms after 2pm. Seas 1 ft or less.

Sunday Night

SW wind 10 to 13 kt, with gusts as high as 20 kt. A slight chance of showers and thunderstorms before 8pm. Seas 1 ft or less.

Monday

WSW wind 8 to 13 kt. Showers likely and possibly a thunderstorm after 2pm. Seas 1 ft or less.

Monday Night

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

Tuesday

W wind 9 to 11 kt. A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 8am. Seas 1 ft or less.

Tuesday Night

WSW wind around 9 kt. A chance of showers and thunderstorms. 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.