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Charleston, SC Local Forecast Office

Charleston Harbor MR

Marine Point Forecast

[NOTICE]

Today
W 9kt
< 1ft
Tonight
WSW 13kt
< 1ft
Wednesday
WSW 13kt
< 1ft
Wednesday Night
SW 10kt
< 1ft
Thursday
⇑SW 16kt
< 1ft
Thursday Night
SW 13kt
< 1ft
Juneteenth
WSW 16kt
< 1ft
Friday Night
SW 13kt
< 1ft
Saturday
W 8kt
< 1ft

Associated Zone Forecast which includes this point

Last Update: 2:40 am EDT Jun 16, 2026
Forecast Valid: 7am EDT Jun 16, 2026-6pm EDT Jun 22, 2026

View Nearby Observations

Detailed Forecast

Today

W wind 5 to 9 kt. A chance of showers and thunderstorms, mainly after noon. Seas 1 ft or less.

Tonight

WSW wind 8 to 13 kt, with gusts as high as 20 kt. A chance of showers and thunderstorms before 2am, then showers likely and possibly a thunderstorm between 2am and 5am, then a chance of showers and thunderstorms after 5am. Seas 1 ft or less.

Wednesday

WSW wind 11 to 13 kt. A chance of showers and thunderstorms, mainly between noon and 2pm. Seas 1 ft or less.

Wednesday Night

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

Thursday

SW wind 10 to 13 kt increasing to 13 to 16 kt in the afternoon. A slight chance of showers and thunderstorms after 2pm. Seas 1 ft or less.

Thursday Night

SW wind 11 to 13 kt, with gusts as high as 20 kt. A chance of showers and thunderstorms, mainly after 8pm. Seas 1 ft or less.

Juneteenth

WSW wind 11 to 16 kt, with gusts as high as 25 kt. A chance of showers and thunderstorms. Seas 1 ft or less.

Friday Night

SW wind 9 to 13 kt, with gusts as high as 20 kt. A chance of showers and thunderstorms. Seas 1 ft or less.

Saturday

W wind 6 to 8 kt. A chance of showers and thunderstorms, mainly 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 83 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.