For More Weather Information:

Charleston, SC Local Forecast Office

4NM N Charleston Harbor MR

Marine Point Forecast

[NOTICE]

Tonight
SSW 10kt⇓
< 1ft
Monday
⇑SSW 11kt
< 1ft
Monday Night
SSW 9kt
< 1ft
Tuesday
⇑SW 12kt
< 1ft
Tuesday Night
SSW 9kt
< 1ft
Wednesday
SW 11kt
< 1ft
Wednesday Night
SW 9kt
< 1ft
Juneteenth
SW 12kt
< 1ft
Thursday Night
SSW 9kt
< 1ft

Associated Zone Forecast which includes this point

Last Update: 8:25 pm EDT Jun 15, 2025
Forecast Valid: 8pm EDT Jun 15, 2025-6pm EDT Jun 22, 2025

View Nearby Observations

Detailed Forecast

Tonight

SSW wind 5 to 10 kt becoming variable and less than 5 kt after midnight. A chance of showers and thunderstorms, mainly before 11pm. Seas 1 ft or less.

Monday

Variable winds less than 5 kt becoming SSW 6 to 11 kt in the morning. A chance of showers and thunderstorms. Seas 1 ft or less.

Monday Night

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

Tuesday

SW wind 6 to 9 kt increasing to 9 to 12 kt in the afternoon. A chance of showers and thunderstorms. Seas 1 ft or less.

Tuesday Night

SSW wind around 9 kt. A slight chance of showers and thunderstorms before 2am. Seas 1 ft or less.

Wednesday

SW wind 6 to 11 kt. A slight chance of showers and thunderstorms after 8am. Seas 1 ft or less.

Wednesday Night

SW wind around 9 kt. Partly cloudy. Seas 1 ft or less.

Juneteenth

SW wind 7 to 12 kt. A slight chance of showers and thunderstorms after 2pm. Seas 1 ft or less.

Thursday Night

SSW wind 7 to 9 kt. A chance of showers and thunderstorms, mainly between 8pm and 2am. 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.