For More Weather Information:

Charleston, SC Local Forecast Office

Charleston Harbor MR

Marine Point Forecast

[NOTICE]

Today
SW 16kt
< 1ft

Small Craft Advisory
Tonight
SW 6kt
< 1ft
Saturday
SW 9kt
< 1ft
Saturday Night
⇑W 6kt
< 1ft
Sunday
NW 14kt
< 1ft
Sunday Night
WNW 17kt
< 1ft
Monday
NW 14kt
< 1ft
Monday Night
NNW 11kt
< 1ft
Tuesday
NNW 9kt
< 1ft

Associated Zone Forecast which includes this point

Last Update: 1:35 am EST Feb 20, 2026
Forecast Valid: 7am EST Feb 20, 2026-6pm EST Feb 26, 2026

View Nearby Observations

Detailed Forecast

...SMALL CRAFT ADVISORY IN EFFECT THROUGH THIS EVENING...

Today

SW wind 12 to 16 kt, with gusts as high as 25 kt. A chance of showers, mainly after 2pm. Patchy fog after 10am. Seas 1 ft or less.

Tonight

SW wind around 6 kt. A chance of showers, with thunderstorms also possible after 2am. Patchy fog between 11pm and 2am. Seas 1 ft or less.

Saturday

SW wind 5 to 9 kt. A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 1pm. Patchy fog before 7am. Seas 1 ft or less.

Saturday Night

Variable winds less than 5 kt becoming W around 6 kt after midnight. Showers and possibly a thunderstorm. Seas 1 ft or less.

Sunday

NW wind 9 to 14 kt, with gusts as high as 21 kt. A chance of showers, mainly before 1pm. Seas 1 ft or less.

Sunday Night

WNW wind 13 to 17 kt. Mostly clear. Seas 1 ft or less.

Monday

NW wind around 14 kt, with gusts as high as 21 kt. Sunny. Seas 1 ft or less.

Monday Night

NNW wind around 11 kt. Mostly clear. Seas 1 ft or less.

Tuesday

NNW wind 5 to 9 kt becoming WNW in the afternoon. 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 53 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.