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Charleston, SC Local Forecast Office

5NM N Rattlesnake Shoal MR

Marine Point Forecast

[NOTICE]

Tonight
SSE 9kt
< 1ft
Saturday
⇑SE 9kt
< 1ft
Saturday Night
SSE 6kt⇓
< 1ft
Sunday
⇑S 10kt
< 1ft
Sunday Night
S 7kt
< 1ft
Memorial Day
S 10kt
< 1ft
Monday Night
S 8kt
< 1ft
Tuesday
S 11kt
< 1ft
Tuesday Night
S 8kt
< 1ft

Associated Zone Forecast which includes this point

Last Update: 2:30 pm EDT May 22, 2026
Forecast Valid: 4pm EDT May 22, 2026-6pm EDT May 29, 2026

View Nearby Observations

Detailed Forecast

Tonight

SSE wind 5 to 9 kt. Mostly cloudy. Seas 1 ft or less.

Saturday

Variable winds less than 5 kt becoming SE 5 to 9 kt in the morning. A slight chance of showers and thunderstorms before 2pm, then a slight chance of showers and thunderstorms after 5pm. Seas 1 ft or less.

Saturday Night

SSE wind around 6 kt becoming variable and less than 5 kt after midnight. A slight chance of showers and thunderstorms before 2am, then a slight chance of showers and thunderstorms after 3am. Seas 1 ft or less.

Sunday

Variable winds less than 5 kt becoming S 5 to 10 kt in the morning. Showers likely and possibly a thunderstorm before 2pm, then a slight chance of showers and thunderstorms after 2pm. Seas 1 ft or less.

Sunday Night

S wind around 7 kt. A slight chance of showers and thunderstorms before 2am, then a chance of showers between 2am and 5am, then a chance of showers and thunderstorms after 5am. Seas 1 ft or less.

Memorial Day

S wind 6 to 10 kt. A chance of showers and thunderstorms, mainly between 11am and 2pm. Seas 1 ft or less.

Monday Night

S wind around 8 kt. A slight chance of showers and thunderstorms between 8pm and 2am, then a slight chance of showers after 2am. Seas 1 ft or less.

Tuesday

S wind 7 to 11 kt. A chance of showers, with thunderstorms also possible after 2pm. Seas 1 ft or less.

Tuesday Night

S wind 6 to 8 kt. A slight chance of showers and thunderstorms before 8pm, then a slight chance of showers after 2am. Seas 1 ft or less.

Winds and seas 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.