Gatineau
September
Weather in Gatineau for September 2025
Your guide to Gatineau weather in September - trends and predictions
In general, the average temperature in Gatineau at the beginning of September is 25 °C. As the month progressed, temperatures tended to significantly cool down, reaching an average of 20.6 °C by the end of September.
Gatineau experiences moderate rainfall in September, with an average of 6 rainy days and a total precipitation of 76.8 mm.
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Temperatures
Rain 🌧️
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24
Dry days
6
Rainy days
0
Snow days
22°/11°
Temperatures
13 km/h
Avg max wind
74 %
Avg humidity
Gatineau Weather September
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Temperatures trend during September in Gatineau
See the weather trend as well as the moving average line
September weather in Gatineau day by day
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| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| 1 Sept. |  Overcast | 23° /10° | 3.5 mm | 6 | |
| 2 Sept. | Overcast | 22° /10° | 0 mm | 5 | |
| 3 Sept. |  Mist | 25° /10° | 0 mm | 7 | |
| 4 Sept. | Overcast | 27° /13° | 0 mm | 7 | |
| 5 Sept. | Mist | 28° /14° | 0 mm | 7 | |
| 6 Sept. | Mist | 28° /14° | 0.2 mm | 6 | |
| 7 Sept. |  Thundery outbreaks possible | 22° /11° | 7.6 mm | 5 | |
| 8 Sept. |  Light rain | 15° /10° | 1.9 mm | 4 | |
| 9 Sept. |  Cloudy | 21° /7° | 0 mm | 5 | |
| 10 Sept. | Overcast | 21° /8° | 0 mm | 5 | |
| 11 Sept. | Overcast | 24° /9° | 0 mm | 5 | |
| 12 Sept. | Fog | 24° /13° | 0.1 mm | 6 | |
| 13 Sept. | Mist | 21° /11° | 0.1 mm | 6 | |
| 14 Sept. | Mist | 21° /10° | 0 mm | 5 | |
| 15 Sept. |  Partly cloudy | 24° /10° | 0 mm | 6 | |
| 16 Sept. | Partly cloudy | 25° /12° | 0 mm | 7 | |
| 17 Sept. |  Patchy rain possible | 25° /12° | 0.4 mm | 6 | |
| 18 Sept. | Patchy light drizzle | 23° /12° | 0.8 mm | 5 | |
| 19 Sept. | Thundery outbreaks possible | 24° /13° | 0 mm | 6 | |
| 20 Sept. | Overcast | 21° /11° | 0 mm | 5 | |
| 21 Sept. | Mist | 21° /8° | 0 mm | 5 | |
| 22 Sept. | Overcast | 22° /9° | 0 mm | 6 | |
| 23 Sept. | Mist | 20° /10° | 3.8 mm | 5 | |
| 24 Sept. | Mist | 22° /11° | 0 mm | 5 | |
| 25 Sept. |  Sunny | 18° /10° | 56.5 mm | 5 | |
| 26 Sept. | Sunny | 21° /10° | 1.9 mm | 6 | |
| 27 Sept. | Mist | 20° /9° | 0 mm | 5 | |
| 28 Sept. | Partly cloudy | 20° /9° | 0 mm | 5 | |
| 29 Sept. | Mist | 21° /10° | 0 mm | 5 | |
| 30 Sept. | Partly cloudy | 22° /12° | 0 mm | 6 | |
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Important Notice
Our weather forecast for Gatineau 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 Gatineau forecast closer to your planned date for the most up-to-date weather information.
Change Month
Gatineau in September - FAQ
What are the expected maximum and minimum temperatures in Gatineau during September?
Enjoy moderate daytime temperatures of up to 22° and cooler nights around 11°. Ideal for a range of outdoor activities, from hiking to city tours.
How much rainfall should be expected in Gatineau during September?
Moderate rainfall is anticipated in Gatineau during September, with a total of 76.8 mm spread over approximately 6 days. Considering plans for rainy days is advisable.
What are the typical wind conditions in Gatineau during September?
The average wind speed in Gatineau during September is 13 km/h, suggesting breezy to windy conditions, depending on your activities.
September rainfall patterns in Gatineau
Explore the daily rainfall trends and prepare for Gatineaus September weather 💧
UV exposure in Gatineau during September
Stay informed about UV levels for safe outdoor activities throughout the month of September ☀️
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