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Charleston, SC Local Forecast Office

Charleston Harbor MR

Marine Point Forecast

[NOTICE]

Thursday
⇑SE 9kt
< 1ft
Thursday Night
SSE 7kt⇓
< 1ft
Friday
⇑S 12kt
< 1ft
Friday Night
SSW 11kt
< 1ft
Saturday
⇑WSW 13kt
< 1ft
Saturday Night
SW 12kt
< 1ft
Sunday
W 11kt
< 1ft
Sunday Night
SW 7kt⇓
< 1ft
Monday
⇑E 11kt
< 1ft

Associated Zone Forecast which includes this point

Last Update: 2:30 am EDT Jun 25, 2026
Forecast Valid: 3am EDT Jun 25, 2026-6pm EDT Jul 1, 2026

View Nearby Observations

Detailed Forecast

Thursday

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

Thursday Night

SSE wind 5 to 7 kt becoming variable and less than 5 kt in the evening. Partly cloudy. Seas 1 ft or less.

Friday

Variable winds less than 5 kt becoming S 7 to 12 kt in the morning. A chance of showers and thunderstorms before 4pm, then a slight chance of showers and thunderstorms after 5pm. Seas 1 ft or less.

Friday Night

SSW wind 9 to 11 kt. A chance of showers and thunderstorms, mainly between 7pm and 2am. Seas 1 ft or less.

Saturday

WSW wind 7 to 10 kt increasing to 10 to 13 kt in the afternoon. A slight chance of showers before 8am, then a slight chance of showers and thunderstorms after 2pm. Seas 1 ft or less.

Saturday Night

SW wind 8 to 12 kt. A slight chance of showers and thunderstorms before 8pm. Seas 1 ft or less.

Sunday

W wind 6 to 11 kt. A chance of showers and thunderstorms after 2pm. Seas 1 ft or less.

Sunday Night

SW wind 5 to 7 kt becoming variable and less than 5 kt after midnight. A chance of showers and thunderstorms before 2am. Seas 1 ft or less.

Monday

Variable winds less than 5 kt becoming E 6 to 11 kt in the afternoon. 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 83 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.