Charleston Weather in September

What's the weather like in Charleston (South Carolina) in September 2024?

The climate in Charleston during September can be summarized as hot, humid and wet.

September is in the fall / autumn in Charleston and is typically the 4th warmest month of the year. Daytime maximum temperatures average around a muggy 29°C (83°F), whilst at night 21°C (70°F) is normal.

Charleston weather averages (imperial / metric)
Daytime temperature 28.5°C 83.2°F
Nightly temperature 21.4°C 70.4°F
Average temperature 24.9°C 76.8°F
Daily sunshine 7.8 hrs
Avg rainfall 121 mm 4.8 ins
Rainy days 10 days
Sea temperature 27.7°C 81.9°F
Humidity 78%
Windspeed 13kph 8 mph

On average September is the 4th wettest month of the year in Charleston with around 121mm 4.8 inches of rain making it a wet time to visit. This rainfall is typically spread over 10 days, although this may vary considerably.

On the flip side this corresponds to an average of 7.8 hours of sunshine per day.

September temperatures in Charleston

Charleston average temperature in September

September rainfall

Charleston average rain in September

September hourly sunshine

Charleston average rain in September

The data used in these monthly averages covers a period of over 100 years right up until last year. As such they are a valid prediction of what to expect for the weather in Charleston in September 2024.

Other monthly averages

Best places to visit in September

UV index Best time to go?

Beta

Current (hourly) weather 15 day forecast

Charleston weather stats

Charleston weather statistics
Hottest month: July 31.2°C 88.2°F
Driest month: November 60mm 2.4ins
Sunniest month: April 9.8hrs
Coldest month: January 13.3°C 55.9°F
Wettest month: August 185mm 7.3ins
Map showing location of Charleston (32.77657, -79.93092) Charleston map pin © Google

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