Chester Weather in September

What's the weather like in Chester (South Carolina) in September 2025?

The climate in Chester during September can be summarized as warm, humid and damp.

September is in the fall / autumn in Chester and is typically the 4th warmest month of the year. Daytime maximum temperatures average around a muggy 28°C (83°F), whilst at night 17°C (62°F) is normal.

Chester weather averages (imperial / metric)
Daytime temperature 28.2°C 82.8°F
Nightly temperature 16.6°C 61.9°F
Average temperature 22.4°C 72.3°F
Daily sunshine 8.5 hrs
Avg rainfall 101 mm 4 ins
Rainy days 7 days
Sea temperature 25.9°C 78.6°F
Humidity 75%
Windspeed 10.4kph 7 mph

On average September is the 6th driest month of the year in Chester with around 101mm 4 inches of rain making it a damp time to visit. This rainfall is typically spread over 7 days, although this may vary considerably.

On the flip side this corresponds to an average of 8.5 hours of sunshine per day.

September temperatures in Chester

Chester average temperature in September

September rainfall

Chester average rain in September

September hourly sunshine

Chester 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 Chester in September 2025.

Other monthly averages

Best places to visit in September

UV index Best time to go?

Beta

Current (hourly) weather 15 day forecast

Chester weather stats

Chester weather statistics
Hottest month: July 31.8°C 89.2°F
Driest month: April 80mm 3.1ins
Sunniest month: April 9.5hrs
Coldest month: January 10.6°C 51.1°F
Wettest month: March 128mm 5ins
Map showing location of Chester (34.70486, -81.21426) Chester map pin © Google

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