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Charleston, SC Local Forecast Office

Charleston Harbor MR

Marine Point Forecast

[NOTICE]

Tonight
SSW 6kt
< 1ft
Saturday
SW 9kt
< 1ft
Saturday Night
SW 6kt⇓
< 1ft
Sunday
N 6kt
< 1ft
Sunday Night
Light Wind
< 1ft
Monday
⇑SE 9kt
< 1ft
Monday Night
SSE 7kt⇓
< 1ft
Tuesday
⇑SSW 13kt
< 1ft
Tuesday Night
SSW 14kt
< 1ft

Associated Zone Forecast which includes this point

Last Update: 8:32 pm EDT Jul 24, 2026
Forecast Valid: 9pm EDT Jul 24, 2026-6pm EDT Jul 31, 2026

View Nearby Observations

Detailed Forecast

Tonight

SSW wind around 6 kt. A slight chance of showers and thunderstorms before 10pm, then a slight chance of showers and thunderstorms after 11pm. Seas 1 ft or less.

Saturday

SW wind 6 to 9 kt. A chance of showers and thunderstorms before 2pm, then showers and possibly a thunderstorm between 2pm and 5pm, then showers and thunderstorms likely after 5pm. Seas 1 ft or less.

Saturday Night

SW wind around 6 kt becoming variable and less than 5 kt after midnight. Showers and thunderstorms, mainly before 2am. Seas 1 ft or less.

Sunday

N wind around 6 kt becoming E in the afternoon. A chance of showers and thunderstorms, mainly after 8am. Seas 1 ft or less.

Sunday Night

Variable winds 5 kt or less. A chance of showers and thunderstorms, mainly before 8pm. Seas 1 ft or less.

Monday

Variable winds less than 5 kt becoming SE 5 to 9 kt in the afternoon. Sunny. Seas 1 ft or less.

Monday Night

SSE wind 5 to 7 kt becoming variable and less than 5 kt after midnight. Mostly clear. Seas 1 ft or less.

Tuesday

Variable winds less than 5 kt becoming SSW 8 to 13 kt in the morning. Mostly sunny. Seas 1 ft or less.

Tuesday Night

SSW wind 12 to 14 kt, with gusts as high as 20 kt. Partly cloudy. 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 87 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.