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Hourly Forecast
Daylight Hours
07:14
Sunrise
19:26
Sunset
Moon
Waxing Crescent
12:59
Moonrise
21:39
Moonset
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Weather in Charleston today, September 16, 2026
Charleston is set for a fine, sunny day on September 16, 2026, with only limited interruptions to the clear sky. The early hours look particularly favourable for being outside.
Temperatures climb from an overnight low near 20°C toward a daytime high of about 34°C. The air stays humid, with relative humidity between 40% and 69% and the peak around 23:00. Airflow remains manageable, reaching about 2.6 km/h around 18:00.
Expect a more open afternoon, with limited cloud around 5% by 15:00. Residual damp risk should be lower than earlier. Visibility stays near 16.1 km. Expect sunrise at 07:14, sunset at 19:26, and 12 hours 11 minutes of sunlight today overall.
Taken together, settled sunshine in Charleston on September 16, 2026 makes outdoor timing easier, with highs near 34°C.
Frequently asked questions about weather in Charleston
How warm does it get in Charleston?
The warmest month in Charleston is July, with average high temperatures of 30°C. The average temperature during this period is around 25°C.
How cold does it get in Charleston?
The coldest month in Charleston is January, with average low temperatures of -1°C. The average temperature during this period is around 2°C.
What is the wettest time of year in Charleston?
The wettest month in Charleston is May, with an average of 155mm of precipitation.
What is the driest time of year in Charleston?
The driest month in Charleston is November, with an average of 80mm of precipitation.
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