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Charleston, SC Local Forecast Office

5NM N Rattlesnake Shoal MR

Marine Point Forecast

[NOTICE]

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

Associated Zone Forecast which includes this point

Last Update: 2:35 pm EDT May 21, 2026
Forecast Valid: 5pm EDT May 21, 2026-6pm EDT May 28, 2026

View Nearby Observations

Detailed Forecast

Tonight

SSE wind 5 to 8 kt becoming variable and less than 5 kt after midnight. Mostly cloudy. Seas 1 ft or less.

Friday

Variable winds less than 5 kt becoming SSE 5 to 10 kt in the morning. A slight chance of showers before 11am, then a slight chance of showers and thunderstorms between 11am and noon. Seas 1 ft or less.

Friday Night

SSE wind around 6 kt. Mostly cloudy. Seas 1 ft or less.

Saturday

S wind 5 to 9 kt. A slight chance of showers, with thunderstorms also possible after 2pm. Seas 1 ft or less.

Saturday Night

Variable winds 5 kt or less. A slight chance of thunderstorms before 8pm, then a chance of showers after 2am. Seas 1 ft or less.

Sunday

Variable winds less than 5 kt becoming S 5 to 9 kt in the morning. A chance of showers and thunderstorms, mainly before 2pm. Seas 1 ft or less.

Sunday Night

S wind around 7 kt. A slight chance of showers and thunderstorms before 8pm, then a slight chance of showers after 2am. Seas 1 ft or less.

Memorial Day

S wind 5 to 8 kt increasing to 8 to 11 kt in the afternoon. A slight chance of showers and thunderstorms before 2pm. Seas 1 ft or less.

Monday Night

S wind around 8 kt. Partly cloudy. 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.