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Charleston, SC Local Forecast Office

Charleston Harbor MR

Marine Point Forecast

[NOTICE]

Today
⇑E 7kt
< 1ft
Tonight
Light Wind
< 1ft
Friday
⇑SSE 6kt
< 1ft
Friday Night
Light Wind
< 1ft
Saturday
⇑SE 7kt
< 1ft
Saturday Night
SE 6kt⇓
< 1ft
Sunday
⇑S 7kt
< 1ft
Sunday Night
SW 6kt
< 1ft
Monday
N 10kt
< 1ft

Associated Zone Forecast which includes this point

Last Update: 2:30 am EDT Oct 1, 2026
Forecast Valid: 7am EDT Oct 1, 2026-6pm EDT Oct 7, 2026

View Nearby Observations

Detailed Forecast

Today

Variable winds less than 5 kt becoming E 5 to 7 kt in the afternoon. Patchy fog before 9am. Seas 1 ft or less.

Tonight

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

Friday

Variable winds less than 5 kt becoming SSE around 6 kt in the afternoon. Mostly sunny. Seas 1 ft or less.

Friday Night

Variable winds 5 kt or less. A chance of showers and thunderstorms after 2am. Seas 1 ft or less.

Saturday

Variable winds less than 5 kt becoming SE 5 to 7 kt in the afternoon. A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 8am. Seas 1 ft or less.

Saturday Night

SE wind around 6 kt becoming variable and less than 5 kt after midnight. Showers likely and possibly a thunderstorm. Seas 1 ft or less.

Sunday

Variable winds less than 5 kt becoming S 5 to 7 kt in the morning. Showers and possibly a thunderstorm. Seas 1 ft or less.

Sunday Night

SW wind around 6 kt becoming NW after midnight. Showers and possibly a thunderstorm. Seas 1 ft or less.

Monday

N wind 7 to 10 kt. Showers likely and possibly a thunderstorm before 8am, then showers likely between 8am and 2pm, then a chance of showers and thunderstorms after 2pm. 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 78 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.