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Charleston, SC Local Forecast Office

Charleston Harbor MR

Marine Point Forecast

[NOTICE]

Tonight
ENE 19kt
< 1ft

Small Craft Advisory
Saturday
E 15kt
< 1ft

Small Craft Advisory
Saturday Night
ESE 11kt
< 1ft

Small Craft Advisory
Sunday
SSW 16kt
< 1ft
Sunday Night
SW 11kt
< 1ft
Columbus Day
WNW 9kt
< 1ft
Monday Night
Light Wind
< 1ft
Tuesday
Light Wind
< 1ft
Tuesday Night
Light Wind
< 1ft

Associated Zone Forecast which includes this point

Last Update: 8:32 pm EDT Oct 9, 2026
Forecast Valid: 8pm EDT Oct 9, 2026-6pm EDT Oct 16, 2026

View Nearby Observations

Detailed Forecast

...SMALL CRAFT ADVISORY IN EFFECT FROM 11 PM EDT THIS EVENING

Tonight

ENE wind 15 to 19 kt, with gusts as high as 26 kt. Showers and thunderstorms before 1am, then showers and possibly a thunderstorm, mainly after 1am. Seas 1 ft or less.

Saturday

E wind around 15 kt, with gusts as high as 25 kt. Showers and possibly a thunderstorm. Seas 1 ft or less.

Saturday Night

ESE wind around 11 kt becoming S after midnight. Winds could gust as high as 21 kt. Showers and possibly a thunderstorm. Seas 1 ft or less.

Sunday

SSW wind 12 to 16 kt, with gusts as high as 23 kt. A chance of showers and thunderstorms before 7am, then showers likely and possibly a thunderstorm between 7am and 2pm, then a slight chance of showers after 2pm. Seas 1 ft or less.

Sunday Night

SW wind 8 to 11 kt becoming W after midnight. A slight chance of showers before 8pm. Seas 1 ft or less.

Columbus Day

WNW wind around 9 kt. Sunny. Seas 1 ft or less.

Monday Night

Variable winds 5 kt or less. Mostly clear. Seas 1 ft or less.

Tuesday

Variable winds 5 kt or less. Sunny. Seas 1 ft or less.

Tuesday Night

Variable winds 5 kt or less. Clear. Seas 1 ft or less.

*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.