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Johns Island, SC Marine Weather Forecast

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

December 27, 2025 7:00 am EST
Location: 32.781N 79.924W
Wind Direction: WSW (250°)
Wind Speed: 5.1 knots
Wind Gust: 8.0 knots
Atmospheric Pressure: 29.98 in (1015.2 mb)
Pressure Tendency: +0.03 in (+1.0 mb)
Air Temperature: 57.9°F (14.4°C)
Water Temperature: 55.8°F (13.2°C)


Today - 74°F
Dec 27, 2025
6 mph NW
Sunny
Sunny. High near 74, with temperatures falling to around 68 in the afternoon. Northwest wind around 6 mph.
Tonight - 56°F
Dec 27, 2025
2 mph NE
Partly Cloudy then Patchy Fog
Patchy fog after 4am. Partly cloudy, with a low around 56. Northeast wind around 2 mph.
Sunday - 68°F
Dec 28, 2025
3 to 8 mph E
Partly Sunny
Partly sunny, with a high near 68. East wind 3 to 8 mph.
Sunday Night - 59°F
Dec 28, 2025
3 to 7 mph S
Mostly Cloudy
Mostly cloudy, with a low around 59. South wind 3 to 7 mph.
Monday - 72°F
Dec 29, 2025
8 to 13 mph SW
Partly Sunny then Slight Chance Light Rain
A slight chance of rain after 1pm. Partly sunny, with a high near 72. Southwest wind 8 to 13 mph, with gusts as high as 22 mph. Chance of precipitation is 20%.
Monday Night - 38°F
Dec 29, 2025
12 mph W
Slight Chance Light Rain then Partly Cloudy
A slight chance of rain before 7pm. Partly cloudy, with a low around 38. Chance of precipitation is 20%.
Tuesday - 53°F
Dec 30, 2025
8 mph NW
Mostly Sunny
Mostly sunny, with a high near 53.
Tuesday Night - 33°F
Dec 30, 2025
6 mph NW
Mostly Clear
Mostly clear, with a low around 33.
Wednesday - 53°F
Dec 31, 2025
5 to 8 mph W
Sunny
Sunny, with a high near 53.
Wednesday Night - 38°F
Dec 31, 2025
7 mph W
Mostly Clear
Mostly clear, with a low around 38.
New Year's Day - 57°F
Jan 01, 2026
9 mph W
Sunny
Sunny, with a high near 57.
Thursday Night - 35°F
Jan 01, 2026
7 mph W
Partly Cloudy
Partly cloudy, with a low around 35.
Friday - 51°F
Jan 02, 2026
7 mph NW
Mostly Sunny
Mostly sunny, with a high near 51.
Friday Night - 35°F
Jan 02, 2026
6 mph NW
Partly Cloudy
Partly cloudy, with a low around 35.

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