For More Weather Information:

Charleston, SC Local Forecast Office

Charleston Harbor MR

Marine Point Forecast

[NOTICE]

This Afternoon
E 14kt
< 1ft
Tonight
E 9kt⇓
< 1ft
Thursday
⇑SSE 8kt
< 1ft
Thursday Night
SSW 7kt
< 1ft
Friday
⇑SSW 9kt
< 1ft
Friday Night
SW 8kt
< 1ft
Saturday
⇑S 9kt
< 1ft
Saturday Night
S 7kt⇓
< 1ft
Sunday
⇑S 7kt
< 1ft

Associated Zone Forecast which includes this point

Last Update: 2:30 pm EDT Sep 9, 2026
Forecast Valid: 3pm EDT Sep 9, 2026-6pm EDT Sep 16, 2026

View Nearby Observations

Detailed Forecast

This Afternoon

E wind around 14 kt. A chance of showers and thunderstorms. Seas 1 ft or less.

Tonight

E wind 5 to 9 kt becoming variable and less than 5 kt after midnight. A chance of showers and thunderstorms, mainly between midnight and 2am. Seas 1 ft or less.

Thursday

Variable winds less than 5 kt becoming SSE 5 to 8 kt in the afternoon. A slight chance of showers, then a chance of showers and thunderstorms after 11am. Seas 1 ft or less.

Thursday Night

SSW wind 5 to 7 kt. A slight chance of showers and thunderstorms between 3am and 4am. Seas 1 ft or less.

Friday

Variable winds less than 5 kt becoming SSW 5 to 9 kt in the afternoon. A chance of showers and thunderstorms, mainly after 8am. Seas 1 ft or less.

Friday Night

SW wind 5 to 8 kt. A chance of showers and thunderstorms after 2am. Seas 1 ft or less.

Saturday

Variable winds less than 5 kt becoming S 5 to 9 kt in the afternoon. A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 8am. Seas 1 ft or less.

Saturday Night

S wind 5 to 7 kt becoming variable and less than 5 kt after midnight. A chance of showers and thunderstorms, mainly after 2am. Seas 1 ft or less.

Sunday

Variable winds less than 5 kt becoming S 5 to 7 kt in the afternoon. 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 85 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.