Lafayette Weather in September

What's the weather like in Lafayette (Louisiana) in September 2025?

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

September is in the fall / autumn in Lafayette and is typically the 4th warmest month of the year. Daytime maximum temperatures average around a steamy 31°C (87°F), whilst at night 20°C (68°F) is normal.

Lafayette weather averages (imperial / metric)
Daytime temperature 30.8°C 87.4°F
Nightly temperature 20.2°C 68.4°F
Average temperature 25.5°C 77.9°F
Daily sunshine 8.3 hrs
Avg rainfall 127 mm 5 ins
Rainy days 9 days
Sea temperature 28.4°C 83.2°F
Humidity 78%
Windspeed 11.9kph 7 mph

On average September is the 6th driest month of the year in Lafayette with around 127mm 5 inches of rain making it a wet 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 8.3 hours of sunshine per day.

September temperatures in Lafayette

Lafayette average temperature in September

September rainfall

Lafayette average rain in September

September hourly sunshine

Lafayette 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 Lafayette 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

Lafayette weather stats

Lafayette weather statistics
Hottest month: July 32.6°C 90.7°F
Driest month: October 100mm 3.9ins
Sunniest month: October 8.4hrs
Coldest month: January 15.4°C 59.7°F
Wettest month: July 164mm 6.5ins
Map showing location of Lafayette (30.22409, -92.01984) Lafayette map pin © Google

Locations nearby

Top United States locations