Bluffton Weather in September

What's the weather like in Bluffton (Indiana) in September 2025?

The climate in Bluffton during September can be summarized as warm and reasonably dry.

September is in the fall / autumn in Bluffton and is typically the 4th warmest month of the year. Daytime maximum temperatures average around 25°C (76°F), whilst at night 12°C (53°F) is normal.

Bluffton weather averages (imperial / metric)
Daytime temperature 24.6°C 76.3°F
Nightly temperature 11.6°C 52.9°F
Average temperature 18.1°C 64.6°F
Daily sunshine 9 hrs
Avg rainfall 74 mm 2.9 ins
Rainy days 9 days
Sea temperature 21.1°C 70°F
Humidity 73%
Windspeed 13.7kph 9 mph

On average September is the 5th driest month of the year in Bluffton with around 74mm 2.9 inches of rain making it a reasonably dry time to visit. This rainfall is typically spread over 9 days, although this may vary considerably.

On the flip side this corresponds to an average of 9 hours of sunshine per day.

September temperatures in Bluffton

Bluffton average temperature in September

September rainfall

Bluffton average rain in September

September hourly sunshine

Bluffton 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 Bluffton 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

Bluffton weather stats

Bluffton weather statistics
Hottest month: July 29.1°C 84.4°F
Driest month: February 52mm 2ins
Sunniest month: July 11.5hrs
Coldest month: January -0.6°C 30.9°F
Wettest month: June 102mm 4ins
Map showing location of Bluffton (40.73866, -85.17164) Bluffton map pin © Google

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