Québec
September
Weather in Québec for September 2025
Your guide to Québec weather in September - trends and predictions
Until now, September 2025 in Québec is slightly cooler than the historical average by -0.6 °C.
Expect cooler weather in the next days in Québec with the forecast suggesting a temperature of 18.3 °C, lower than the historical average.
In general, the average temperature in Québec at the beginning of September is 21.9 °C. As the month progressed, temperatures tended to significantly cool down, reaching an average of 14.3 °C by the end of September.
Québec in September brings notable rainfall, with an average of 19 rainy days and a total precipitation of 111.1 mm.
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Temperatures
Rain 🌧️
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11
Dry days
19
Rainy days
0
Snow days
19°/10°
Temperatures
15 km/h
Avg max wind
79 %
Avg humidity
Québec Weather September
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What’s the Weather Like in Québec This September?
Discover the average temperatures and weather trends across Québec’s cities this September.
Temperatures trend during September in Québec
See the weather trend as well as the moving average line
September weather in Québec day by day
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| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| 1 Sept. |  Overcast | 21° /10° | 1.9 mm | 5 | |
| 2 Sept. |  Mist | 21° /9° | 0 mm | 5 | |
| 3 Sept. | Mist | 23° /11° | 0 mm | 6 | |
| 4 Sept. |  Partly cloudy | 23° /11° | 0.3 mm | 6 | |
| 5 Sept. | Overcast | 21° /12° | 4.1 mm | 5 | |
| 6 Sept. |  Moderate or heavy rain shower | 22° /12° | 11.6 mm | 5 | |
| 7 Sept. |  Patchy rain possible | 22° /11° | 3 mm | 5 | |
| 8 Sept. | Light rain shower | 21° /10° | 5.5 mm | 5 | |
| 9 Sept. | Mist | 20° /10° | 0.2 mm | 5 | |
| 10 Sept. |  Heavy rain at times | 21° /10° | 1.2 mm | 5 | |
| 11 Sept. | Partly cloudy | 21° /11° | 1.3 mm | 5 | |
| 12 Sept. | Mist | 21° /10° | 1.9 mm | 5 | |
| 13 Sept. | Partly cloudy | 21° /12° | 10.7 mm | 5 | |
| 14 Sept. | Partly cloudy | 22° /8° | 0 mm | 0.9 | |
| 15 Sept. | Partly cloudy | 22° /12° | 0 mm | 1.2 | |
| 16 Sept. | Partly cloudy | 22° /8° | 0 mm | 1.2 | |
| 17 Sept. | Mist | 24° /10° | 0 mm | 1.2 | |
| 18 Sept. | Patchy rain possible | 25° /12° | 0.3 mm | 0 | |
| 19 Sept. |  Sunny | 15° /6° | 0 mm | 4 | |
| 20 Sept. | Sunny | 17° /3° | 0 mm | 3 | |
| 21 Sept. | Sunny | 19° /5° | 0 mm | 4 | |
| 22 Sept. | Patchy rain possible | 20° /9° | 0.1 mm | 3 | |
| 23 Sept. | Partly cloudy | 20° /10° | 0 mm | 4 | |
| 24 Sept. | Patchy rain possible | 12° /11° | 0.9 mm | 3 | |
| 25 Sept. | Overcast | 15° /7° | 0.1 mm | 3 | |
| 26 Sept. | Partly cloudy | 10° /2° | 0 mm | 3 | |
| 27 Sept. | Partly cloudy | 13° /4° | 0 mm | 3 | |
| 28 Sept. |  Cloudy | 17° /7° | 0.2 mm | 4 | |
| 29 Sept. | Patchy rain possible | 16° /6° | 0.3 mm | 4 | |
| 30 Sept. | Moderate rain at times | 17° /6° | 0.5 mm | 4 | |
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Important Notice
Our weather forecast for Québec in September is based on the analysis of historical data rather than real-time forecast models. While this provides a general overview, weather conditions can change. We recommend that you check the Québec forecast closer to your planned date for the most up-to-date weather information.
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Québec in September - FAQ
What are the expected maximum and minimum temperatures in Québec during September?
Enjoy moderate daytime temperatures of up to 19° and cooler nights around 10°. Ideal for a range of outdoor activities, from hiking to city tours.
How much rainfall should be expected in Québec during September?
Significant rainfall exceeding 111.1 mm is expected in Québec during September, occurring over more than 19 days. Preparing for wet conditions is recommended in your planning.
What are the typical wind conditions in Québec during September?
The average wind speed in Québec during September is 15 km/h, suggesting breezy to windy conditions, depending on your activities.
September rainfall patterns in Québec
Explore the daily rainfall trends and prepare for Québecs September weather 💧
UV exposure in Québec during September
Stay informed about UV levels for safe outdoor activities throughout the month of September ☀️
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