Lake Louise weather in September 2025

Expect 52°F daytime maximum temperatures in the shade with on average 5 hours of sunshine per day in Lake Louise in September. Check more long-term weather averages for Lake Louise in September before you book your next holiday to Alberta in 2025/2026.

  • 52°F maximum daytime temperature in September in Lake Louise52
    52°F max day temperature
  • 5 hours of sunshine per day
  • 13 days with some rainfall in September in Lake Louise13
    13 days with some rainfall
  • 30°F minimum night-time temperature in September in Lake Louise30
    30°F min night temperature
  • 13 hours of daylight per day in September in Lake Louise13
    13 hours of daylight per day
  • No heat & humidity in September in Lake Louise0
    No heat & humidity
  • 2.7 inches monthly rainfall in September in Lake Louise2.7
    2.7 inches of monthly rainfall
  • UV (maximum) index 5 (Moderate) in September in Lake Louise5
    5 (Moderate) UV index

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The September weather guide for Alberta (Lake Louise) 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)  |  Imperial (°F)

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How warm is it in Lake Louise in September?

Daytime temperatures usually reach 52°F in Lake Louise in September, falling to 30°F at night.

How sunny is it in Lake Louise in September?

There are normally 5 hours of bright sunshine each day in Lake Louise in September - that's 39% of daylight hours.

Does it rain in Lake Louise in September?

There are usually 13 days with some rain in Lake Louise in September and the average monthly rainfall is 2.7 inches.

Lake Louise September sunrise & sunset times

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

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Monday, 1st September 2025 07:58 21:30
Monday, 15th September 2025 08:21 20:58
Tuesday, 30th September 2025 08:45 20:24

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