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Charleston, SC Local Forecast Office

Charleston Harbor MR

Marine Point Forecast

[NOTICE]

Overnight
NNE 12kt
< 1ft
Tuesday
⇑NE 20kt
< 1ft

Small Craft Advisory
Tuesday Night
NE 15kt
< 1ft

Small Craft Advisory
Wednesday
NE 13kt
< 1ft
Wednesday Night
NNE 8kt
< 1ft
Thursday
NNE 8kt
< 1ft
Thursday Night
Light Wind
< 1ft
Friday
ENE 12kt
< 1ft
Friday Night
ENE 10kt
< 1ft

Associated Zone Forecast which includes this point

Last Update: 8:32 pm EDT Oct 5, 2026
Forecast Valid: 11pm EDT Oct 5, 2026-6pm EDT Oct 12, 2026

View Nearby Observations

Detailed Forecast

...SMALL CRAFT ADVISORY IN EFFECT FROM 5 AM EDT TUESDAY THROUGH

Overnight

NNE wind 8 to 12 kt, with gusts as high as 20 kt. Mostly cloudy. Seas 1 ft or less.

Tuesday

NE wind 13 to 16 kt increasing to 17 to 20 kt in the afternoon. Winds could gust as high as 27 kt. A slight chance of showers before 9am. Seas 1 ft or less.

Tuesday Night

NE wind 11 to 15 kt, with gusts as high as 24 kt. Mostly cloudy. Seas 1 ft or less.

Wednesday

NE wind around 13 kt, with gusts as high as 20 kt. Partly sunny. Seas 1 ft or less.

Wednesday Night

NNE wind 5 to 8 kt. Mostly cloudy. Seas 1 ft or less.

Thursday

NNE wind around 8 kt. Partly sunny. Seas 1 ft or less.

Thursday Night

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

Friday

ENE wind 7 to 12 kt. A slight chance of showers. Seas 1 ft or less.

Friday Night

ENE wind 8 to 10 kt. A chance of showers. 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.