Calgary weather in August 2025

Expect daytime maximum temperatures of 22°C in Calgary, Alberta in August based on long-term weather averages. There are 9 hours of sunshine per day on average with typically 48 mm of rainfall in the month.

  • 22°C maximum daytime temperature in August in Calgary22
    22°C max day temperature
  • 9 hours of sunshine per day
  • 9 days with some rainfall in August in Calgary9
    9 days with some rainfall
  • 8°C minimum night-time temperature in August in Calgary8
    8°C min night temperature
  • 14 hours of daylight per day in August in Calgary14
    14 hours of daylight per day
  • No heat & humidity in August in Calgary0
    No heat & humidity
  • 48 mm monthly rainfall in August in Calgary48
    48 mm of monthly rainfall
  • UV (maximum) index 6 (High) in August in Calgary6
    6 (High) UV index

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The August weather guide for Alberta (Calgary) 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 Calgary in August?

Daytime temperatures usually reach 22°C in Calgary in August, falling to 8°C at night.

How sunny is it in Calgary in August?

There are normally 9 hours of bright sunshine each day in Calgary in August - that's 62% of daylight hours.

Does it rain in Calgary in August?

There are usually 9 days with some rain in Calgary in August and the average monthly rainfall is 48mm.

Calgary August sunrise & sunset times

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

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Friday, 1st August 2025 05:02 20:22
Saturday, 16th August 2025 05:25 19:54
Sunday, 31st August 2025 05:49 19:23

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