Canada weather in August 2025

Expect 25°C daytime maximum temperatures in the shade with on average 8 hours of sunshine per day in Canada in August. Check more long-term weather averages for Canada in August before you book your next holiday to Canada in 2025/2026.

  • 25°C maximum daytime temperature in August in Canada (Ottawa)25
    25°C max day temperature
  • 8 hours of sunshine per day
  • 11 days with some rainfall in August in Canada (Ottawa)11
    11 days with some rainfall
  • 14°C minimum night-time temperature in August in Canada (Ottawa)14
    14°C min night temperature
  • 14 hours of daylight per day in August in Canada (Ottawa)14
    14 hours of daylight per day
  • No heat & humidity in August in Canada (Ottawa)0
    No heat & humidity
  • 86 mm monthly rainfall in August in Canada (Ottawa)86
    86 mm of monthly rainfall
  • UV (maximum) index 7 (High) in August in Canada (Ottawa)7
    7 (High) UV index

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The August weather guide for Canada (Ottawa) 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.

Top Canada destinations

Below are average maximum temperatures at popular countries, regions and places in Canada in August. Select a holiday destination to see more weather parameters.

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

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More about Canada

How hot is it in Canada in August?

Daytime temperatures usually reach 25°C in Ottawa, Canada in August with no heat and humidity, falling to 14°C at night.

How sunny is it in Canada in August?

There are normally 8 hours of bright sunshine each day in Ottawa, Canada in August - that's 55% of daylight hours.

Does it rain in Canada in August?

There are usually 11 days with some rain in Ottawa, Canada in August and the average monthly rainfall is 86mm.

Canada August sunrise & sunset times

Browse the sunrise and sunset times for Canada in August 2025. Select a month to view Canada sunrise and sunset times for the next 12 months. The Canada sunrise and sunset times shown below are for Ottawa.

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Friday, 1st August 2025 04:47 19:30
Saturday, 16th August 2025 05:05 19:08
Sunday, 31st August 2025 05:23 18:42

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