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Charleston, SC Local Forecast Office

Charleston Harbor MR

Marine Point Forecast

[NOTICE]

Overnight
SW 10kt
< 1ft

Gale Warning
Saturday
NNE 25kt⇓
< 1ft

Gale Warning
Saturday Night
ENE 14kt
< 1ft
Sunday
E 14kt
< 1ft
Sunday Night
E 6kt⇓
< 1ft
Monday
⇑SE 7kt
< 1ft
Monday Night
Light Wind
< 1ft
Tuesday
⇑S 8kt
< 1ft
Tuesday Night
S 6kt
< 1ft

Associated Zone Forecast which includes this point

Last Update: 8:30 pm EDT Mar 27, 2026
Forecast Valid: 12am EDT Mar 28, 2026-6pm EDT Apr 3, 2026

View Nearby Observations

Detailed Forecast

...GALE WARNING IN EFFECT FROM 3 AM EDT SATURDAY THROUGH SATURDAY

Overnight

SW wind 8 to 10 kt becoming NW. Partly cloudy. Seas 1 ft or less.

Saturday

NNE wind 22 to 25 kt decreasing to 16 to 19 kt in the afternoon. Winds could gust as high as 34 kt. Mostly cloudy through mid morning, then gradual clearing. Seas 1 ft or less.

Saturday Night

ENE wind around 14 kt, with gusts as high as 20 kt. Mostly clear. Seas 1 ft or less.

Sunday

E wind 11 to 14 kt. Mostly sunny. Seas 1 ft or less.

Sunday Night

E wind around 6 kt becoming variable and less than 5 kt after midnight. Partly cloudy. Seas 1 ft or less.

Monday

Variable winds less than 5 kt becoming SE 5 to 7 kt in the afternoon. Mostly sunny. Seas 1 ft or less.

Monday Night

Variable winds 5 kt or less. Partly cloudy. Seas 1 ft or less.

Tuesday

Variable winds less than 5 kt becoming S 5 to 8 kt in the afternoon. Mostly sunny. Seas 1 ft or less.

Tuesday Night

S wind around 6 kt. Mostly cloudy. 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.