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Sullivans Island, SC - (Outer Coast) Marine Weather Forecast

Station CHTS1 - 8665530 - Charleston, Cooper River Entrance, SC

December 15, 2025 12:48 am EST
Location: 32.781N 79.924W
Wind Direction: N (10°)
Wind Speed: 20.0 knots
Wind Gust: 26.0 knots
Atmospheric Pressure: 30.42 in (1030.1 mb)
Water Temperature: 54.0°F (12.2°C)


Overnight - 22°F
Dec 15, 2025
15 mph N
Clear
Clear, with a low around 22. Wind chill values as low as 12. North wind around 15 mph, with gusts as high as 28 mph.
Monday - 40°F
Dec 15, 2025
5 to 12 mph N
Sunny
Sunny, with a high near 40. Wind chill values as low as 10. North wind 5 to 12 mph, with gusts as high as 22 mph.
Monday Night - 30°F
Dec 15, 2025
2 mph N
Mostly Clear
Mostly clear, with a low around 30. North wind around 2 mph.
Tuesday - 53°F
Dec 16, 2025
2 to 6 mph W
Sunny
Sunny, with a high near 53. West wind 2 to 6 mph.
Tuesday Night - 40°F
Dec 16, 2025
3 mph W
Mostly Clear
Mostly clear, with a low around 40. West wind around 3 mph.
Wednesday - 62°F
Dec 17, 2025
6 mph W
Partly Sunny
Partly sunny, with a high near 62.
Wednesday Night - 50°F
Dec 17, 2025
2 mph E
Mostly Cloudy
Mostly cloudy, with a low around 50.
Thursday - 67°F
Dec 18, 2025
3 to 7 mph SE
Chance Rain Showers
A chance of rain showers after 7am. Partly sunny, with a high near 67. Chance of precipitation is 30%.
Thursday Night - 55°F
Dec 18, 2025
5 to 8 mph SW
Chance Rain Showers
A chance of rain showers. Mostly cloudy, with a low around 55. Chance of precipitation is 30%.
Friday - 63°F
Dec 19, 2025
9 mph NW
Chance Rain Showers then Mostly Sunny
A chance of rain showers before 7am. Mostly sunny, with a high near 63. Chance of precipitation is 30%.
Friday Night - 42°F
Dec 19, 2025
7 mph N
Mostly Clear
Mostly clear, with a low around 42.
Saturday - 61°F
Dec 20, 2025
5 to 8 mph NE
Sunny
Sunny, with a high near 61.
Saturday Night - 50°F
Dec 20, 2025
3 mph SE
Partly Cloudy
Partly cloudy, with a low around 50.
Sunday - 68°F
Dec 21, 2025
2 to 7 mph SW
Mostly Sunny
Mostly sunny, with a high near 68.

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