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Charleston, SC Local Forecast Office

Charleston Harbor MR

Marine Point Forecast

[NOTICE]

This Afternoon
SSW 20kt
< 1ft

Small Craft Advisory
Tonight
SSW 19kt
< 1ft

Small Craft Advisory
Monday
SW 15kt
< 1ft
Monday Night
SSW 11kt
< 1ft
Tuesday
⇑S 12kt
< 1ft
Tuesday Night
S 10kt
< 1ft
Wednesday
⇑S 11kt
< 1ft
Wednesday Night
S 8kt
< 1ft
Thursday
⇑SSE 9kt
< 1ft

Associated Zone Forecast which includes this point

Last Update: 8:33 am EDT Aug 2, 2026
Forecast Valid: 1pm EDT Aug 2, 2026-6pm EDT Aug 8, 2026

View Nearby Observations

Detailed Forecast

...SMALL CRAFT ADVISORY IN EFFECT FROM NOON EDT TODAY THROUGH

This Afternoon

SSW wind 15 to 20 kt. Showers and possibly a thunderstorm, mainly before 3pm, then showers and thunderstorms likely after 3pm. Seas 1 ft or less.

Tonight

SSW wind 14 to 19 kt, with gusts as high as 25 kt. Showers and thunderstorms, mainly before 2am, then showers likely and possibly a thunderstorm after 3am. Seas 1 ft or less.

Monday

SW wind 11 to 15 kt, with gusts as high as 21 kt. Showers and thunderstorms, mainly before 1pm. Seas 1 ft or less.

Monday Night

SSW wind 8 to 11 kt. Showers and thunderstorms likely, then showers and possibly a thunderstorm after 8pm. Seas 1 ft or less.

Tuesday

S wind 5 to 8 kt increasing to 9 to 12 kt in the afternoon. Showers and possibly a thunderstorm before 8am, then a chance of showers and thunderstorms after 8am. Seas 1 ft or less.

Tuesday Night

S wind 7 to 10 kt. A chance of showers and thunderstorms. Seas 1 ft or less.

Wednesday

Variable winds less than 5 kt becoming S 6 to 11 kt in the morning. A chance of showers and thunderstorms, mainly before 2pm. Seas 1 ft or less.

Wednesday Night

S wind 5 to 8 kt. A chance of showers and thunderstorms, mainly after 2am. Seas 1 ft or less.

Thursday

Variable winds less than 5 kt becoming SSE 5 to 9 kt in the afternoon. A chance of showers and thunderstorms. 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.