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Charleston, SC Local Forecast Office

Charleston Harbor MR

Marine Point Forecast

[NOTICE]

Tonight
SSW 6kt
< 1ft
Saturday
S 10kt
< 1ft
Saturday Night
S 9kt
< 1ft
Sunday
W 12kt
< 1ft
Sunday Night
NNE 14kt
< 1ft
Monday
NNE 12kt
< 1ft
Monday Night
Light Wind
< 1ft
Tuesday
NNE 8kt
< 1ft
Tuesday Night
Light Wind
< 1ft

Associated Zone Forecast which includes this point

Last Update: 8:30 pm EDT Apr 17, 2026
Forecast Valid: 8pm EDT Apr 17, 2026-6pm EDT Apr 24, 2026

View Nearby Observations

Detailed Forecast

Tonight

SSW wind around 6 kt. Mostly clear. Seas 1 ft or less.

Saturday

S wind 5 to 10 kt. Sunny. Seas 1 ft or less.

Saturday Night

S wind around 9 kt. Mostly cloudy. Seas 1 ft or less.

Sunday

SW wind 8 to 12 kt becoming WNW in the afternoon. A slight chance of showers between 2pm and 5pm, then a slight chance of showers and thunderstorms after 5pm. Seas 1 ft or less.

Sunday Night

NNE wind 12 to 14 kt. A slight chance of showers and thunderstorms before 8pm, then a slight chance of showers between 8pm and 2am. Seas 1 ft or less.

Monday

NNE wind 8 to 12 kt becoming ENE in the afternoon. Sunny. Seas 1 ft or less.

Monday Night

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

Tuesday

NNE wind around 8 kt becoming E in the afternoon. Sunny. Seas 1 ft or less.

Tuesday Night

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

Winds and waves higher in and near tstms.

*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.