Saguenay/Lac-Saint-Jean (Saguenay)
September
Weather in Saguenay/Lac-Saint-Jean for September 2025
Your guide to Saguenay/Lac-Saint-Jean weather in September - trends and predictions
In general, the average temperature in Saguenay/Lac-Saint-Jean at the beginning of September is 23.7 °C. As the month progressed, temperatures tended to significantly cool down, reaching an average of 17.9 °C by the end of September.
The climate of Saguenay/Lac-Saint-Jean in September is notably wet, with an average of 13 rainy days, and a total of 108.5 mm of precipitation.
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Temperatures
Rain 🌧️
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17
Dry days
13
Rainy days
0
Snow days
20°/10°
Temperatures
12 km/h
Avg max wind
78 %
Avg humidity
Saguenay/Lac-Saint-Jean in September average weather
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| Mon. | Tue. | Wed. | Thu. | Fri. | Sat. | Sun. |
|---|---|---|---|---|---|---|
| 1  23° | 2  17° | 3 22° | 4  26° | 5 27° | 6 27° | 7 24° |
| 8 17° | 9 13° | 10  14° | 11 18° | 12  21° | 13  21° | 14 20° |
| 15 22° | 16 22° | 17 25° | 18 23° | 19 18° | 20 18° | 21 18° |
| 22 21° | 23  18° | 24 20° | 25 14° | 26 16° | 27 17° | 28 18° |
| 29 19° | 30 21° |
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Temperatures trend during September in Saguenay/Lac-Saint-Jean
See the weather trend as well as the moving average line
September weather day by day
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| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| 1 Sept. | Fog | 23° /6° | 1.8 mm | 5 | |
| 2 Sept. | Patchy rain possible | 17° /7° | 1.2 mm | 4 | |
| 3 Sept. | Mist | 22° /9° | 0 mm | 6 | |
| 4 Sept. | Cloudy | 26° /11° | 0 mm | 6 | |
| 5 Sept. | Fog | 27° /14° | 0 mm | 6 | |
| 6 Sept. | Patchy rain possible | 27° /15° | 0.2 mm | 7 | |
| 7 Sept. | Light rain shower | 24° /15° | 7.5 mm | 6 | |
| 8 Sept. | Light rain shower | 17° /10° | 9.7 mm | 4 | |
| 9 Sept. | Patchy rain possible | 13° /7° | 2.2 mm | 3 | |
| 10 Sept. | Partly cloudy | 14° /7° | 0.8 mm | 4 | |
| 11 Sept. | Patchy rain possible | 18° /7° | 0.3 mm | 5 | |
| 12 Sept. | Overcast | 21° /10° | 0.2 mm | 5 | |
| 13 Sept. | Heavy rain | 21° /13° | 11.8 mm | 5 | |
| 14 Sept. | Mist | 20° /9° | 0 mm | 5 | |
| 15 Sept. | Overcast | 22° /9° | 0 mm | 5 | |
| 16 Sept. | Overcast | 22° /11° | 4.4 mm | 6 | |
| 17 Sept. | Light rain shower | 25° /14° | 0.2 mm | 6 | |
| 18 Sept. | Light rain shower | 23° /11° | 2 mm | 5 | |
| 19 Sept. | Light rain shower | 18° /14° | 4.9 mm | 4 | |
| 20 Sept. | Fog | 18° /12° | 0.3 mm | 4 | |
| 21 Sept. | Cloudy | 18° /8° | 0 mm | 5 | |
| 22 Sept. | Overcast | 21° /8° | 0 mm | 6 | |
| 23 Sept. | Light rain | 18° /8° | 3 mm | 5 | |
| 24 Sept. | Patchy rain possible | 20° /8° | 0 mm | 5 | |
| 25 Sept. | Partly cloudy | 14° /6° | 9.2 mm | 4 | |
| 26 Sept. | Partly cloudy | 16° /7° | 47.1 mm | 4 | |
| 27 Sept. | Partly cloudy | 17° /7° | 1.7 mm | 5 | |
| 28 Sept. | Mist | 18° /7° | 0 mm | 5 | |
| 29 Sept. | Mist | 19° /8° | 0 mm | 5 | |
| 30 Sept. | Mist | 21° /7° | 0 mm | 5 | |
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Important Notice
Our weather forecast for Saguenay/Lac-Saint-Jean 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 Saguenay/Lac-Saint-Jean forecast closer to your planned date for the most up-to-date weather information.
Saguenay/Lac-Saint-Jean in September - FAQ
What are the expected maximum and minimum temperatures in Saguenay/Lac-Saint-Jean during September?
Enjoy moderate daytime temperatures of up to 20° and cooler nights around 10°. Ideal for a range of outdoor activities, from hiking to city tours.
How much rainfall should be expected in Saguenay/Lac-Saint-Jean during September?
Significant rainfall exceeding 108.5 mm is expected in Saguenay/Lac-Saint-Jean during September, occurring over more than 13 days. Preparing for wet conditions is recommended in your planning.
What are the typical wind conditions in Saguenay/Lac-Saint-Jean during September?
The average wind speed in Saguenay/Lac-Saint-Jean during September is 12 km/h, suggesting breezy to windy conditions, depending on your activities.
September rainfall patterns in Saguenay/Lac-Saint-Jean
Explore the daily rainfall trends and prepare for Saguenay/Lac-Saint-Jeans September weather 💧
UV exposure in Saguenay/Lac-Saint-Jean during September
Stay informed about UV levels for safe outdoor activities throughout the month of September ☀️
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