Lafayette weather in September 2025

Expect daytime maximum temperatures of 31°C in Lafayette, Louisiana in September and high heat and humidity based on long-term weather averages. There are 8 hours of sunshine per day on average with typically 127 mm of rainfall in the month.

  • 31°C maximum daytime temperature in September in Lafayette31
    31°C max day temperature
  • 8 hours of sunshine per day
  • 9 days with some rainfall in September in Lafayette9
    9 days with some rainfall
  • 20°C minimum night-time temperature in September in Lafayette20
    20°C min night temperature
  • 12 hours of daylight per day in September in Lafayette12
    12 hours of daylight per day
  • High heat & humidity in September in LafayetteH
    High heat & humidity
  • 127 mm monthly rainfall in September in Lafayette127
    127 mm of monthly rainfall
  • UV (maximum) index 9 (Very High) in September in Lafayette9
    9 (Very High) UV index

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The September weather guide for Louisiana (Lafayette) shows long term weather averages processed from data supplied by CRU (University of East Anglia), the Met Office & the Netherlands Meteorological Institute. Find out more about our data sources.

Metric (°C / mm)  |  Imperial (°F / inches)

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How hot is it in Lafayette in September?

Daytime temperatures usually reach 31°C in Lafayette in September with high heat and humidity, falling to 20°C at night.

How sunny is it in Lafayette in September?

There are normally 8 hours of bright sunshine each day in Lafayette in September - that's 63% of daylight hours.

Does it rain in Lafayette in September?

There are usually 9 days with some rain in Lafayette in September and the average monthly rainfall is 127mm.

What is the chance of a hurricane in Lafayette in September?

On average 1.2 days in September in Lafayette are likely to be affected by the passage of one or more tropical storms.

Lafayette September sunrise & sunset times

Browse the sunrise and sunset times for Lafayette in September 2025. Select a month to view Lafayette sunrise and sunset times for the next 12 months.

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Monday, 1st September 2025 05:45 18:30
Monday, 15th September 2025 05:53 18:13
Tuesday, 30th September 2025 06:01 17:54

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