Banff weather in September 2025

Expect daytime maximum temperatures of 13°C in Banff, Alberta in September based on long-term weather averages. There are 5 hours of sunshine per day on average with 10 days with some rainfall and typically 55 mm of rainfall in the month.

  • 13°C maximum daytime temperature in September in Banff13
    13°C max day temperature
  • 5 hours of sunshine per day
  • 10 days with some rainfall in September in Banff10
    10 days with some rainfall
  • 0°C minimum night-time temperature in September in Banff0
    0°C min night temperature
  • 13 hours of daylight per day in September in Banff13
    13 hours of daylight per day
  • No heat & humidity in September in Banff0
    No heat & humidity
  • 55 mm monthly rainfall in September in Banff55
    55 mm of monthly rainfall
  • UV (maximum) index 5 (Moderate) in September in Banff5
    5 (Moderate) UV index

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The September weather guide for Alberta (Banff) 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 warm is it in Banff in September?

Daytime temperatures usually reach 13°C in Banff in September, falling to -0°C at night.

How sunny is it in Banff in September?

There are normally 5 hours of bright sunshine each day in Banff in September - that's 41% of daylight hours.

Does it rain in Banff in September?

There are usually 10 days with some rain in Banff in September and the average monthly rainfall is 55mm.

Banff September sunrise & sunset times

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

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Monday, 1st September 2025 05:56 19:27
Monday, 15th September 2025 06:18 18:55
Tuesday, 30th September 2025 06:42 18:21

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