Weather in Quebec in August 2025
Average weather
Average temperature in Quebec in August
Going from a maximum of +27°C during the day to a minimum of +9°C during the night, the temperature in August averages around +23°C.
The average maximum temperature goes up 0% by the end of the month, compared with the beginning of the month, from +21°C to +21°C.
Is Quebec warm or cold in August?
Quebec is typically warm in August.
Maximum temperatures go down compared to the previous month from +25°C to +24°C. The minimum temperature also goes up from +15°C to +15°C.
It’s generally warm, but pack a long-sleeve shirt for evenings.
August is one of the warmest months in Quebec, here is the comparison with other months:
Climate in Quebec in August
| July | August | September | ||||
|---|---|---|---|---|---|---|
| Avg. temperature | ||||||
| +25°C | +24°C | +19°C | ||||
| Min. temperature | ||||||
| +5°C | +3°C | -4°C | ||||
| Max. temperature | ||||||
| +35°C | +34°C | +33°C | ||||
| Rainfall | ||||||
| 328 mm | 560 mm | 490 mm | ||||
| Wind | ||||||
| 2 m/s | 2 m/s | 2 m/s | ||||
| Humidity | ||||||
| 76% | 78% | 79% | ||||
| Air pressure | ||||||
| 1011 HPa | 1013 HPa | 1015 HPa | ||||
| Sunny days | ||||||
| 2 | 3 | 4 | ||||
| Cloudy days | ||||||
| 9 | 10 | 10 | ||||
| Rainy days | ||||||
| 19 | 18 | 16 | ||||
| Snowy days | ||||||
| 0 | 0 | 0 | ||||
August weather is still as ok as in July. It’s getting colder in August. From +25°C in the day, the average maximum temperature lowers to +24°C. Prepare for more rain. Average rainfall goes from 328 mm to 560 mm. Humidity rises from 76% to 78%. The average wind speed doesn’t change much during August, staying around 2 m/s. The good news is there are likely to be more sunny days in August, from 2 to 3.
September brings much the same weather, it remains ok.
Wind
The average wind speed is 2 m/s getting up to 7 m/s which is a medium breeze. You can feel it, especially getting out of the water.
The average wind speed in Quebec is gradually increasing during August, going from 2 m/s to 2 m/s over the course of the month.
Rain
How was the weather last August in Quebec?
Climate Change over Years
The climate in Quebec in August has not changed much over the last 43 years.
The average temperature was the lowest in 1980 (+9°C) and the highest in 2010 (+12°C). The driest year was 2001 with only 618 mm of rainfall, and the wettest year was 2023 with 44340 mm.
FAQ
Is August a good time to visit Quebec?
Can you sunbathe in Quebec in August?
Is Quebec rainy in August?
Is it sunny in Quebec in August?
Other cities in Canada
Monthly weather in Quebec
Source of the data
For this page, we’ve looked at the typical weather in Quebec, based on historical hourly weather data from January 1, 1979, to December 31, 2023.
For past dates, we show actual recorded data at the location at that time. Forecasts are based on recorded weather during that day of the year, averaged over the total years for which we have records (unless stated otherwise). The daily temperature is the highest recorded temperature in the shadow during that day.