Saint-Jean-sur-Richelieu
August
Weather in Saint-Jean-sur-Richelieu for August 2025
Your guide to Saint-Jean-sur-Richelieu weather in August - trends and predictions
In general, the average temperature in Saint-Jean-sur-Richelieu at the beginning of August is 24 °C. As the month progressed, temperatures tended to noticeably cool down, reaching an average of 21.9 °C by the end of August.
Saint-Jean-sur-Richelieu experiences an exceptionally high level of rainfall in August, with more than 20 rainy days on average.
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10
Dry days
21
Rainy days
0
Snow days
23°/13°
Temperatures
18 km/h
Avg max wind
85 %
Avg humidity
Saint-Jean-sur-Richelieu in August average weather
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| Mon. | Tue. | Wed. | Thu. | Fri. | Sat. | Sun. |
|---|---|---|---|---|---|---|
| 1  24° | 2  26° | 3  25° | ||||
| 4 26° | 5 22° | 6 23° | 7 22° | 8 24° | 9 23° | 10 23° |
| 11 21° | 12 22° | 13 24° | 14 24° | 15 24° | 16 26° | 17 25° |
| 18 24° | 19  19° | 20 20° | 21 18° | 22 20° | 23 23° | 24 25° |
| 25  20° | 26 22° | 27 24° | 28  22° | 29 23° | 30 22° | 31 20° |
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Temperatures trend during August in Saint-Jean-sur-Richelieu
See the weather trend as well as the moving average line
August weather day by day
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| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| 1 Aug. | Overcast | 24° /15° | 0.8 mm | 6 | |
| 2 Aug. | Patchy rain possible | 26° /14° | 0.1 mm | 6 | |
| 3 Aug. | Moderate or heavy rain shower | 25° /17° | 11.7 mm | 6 | |
| 4 Aug. | Moderate or heavy rain shower | 26° /17° | 19.8 mm | 6 | |
| 5 Aug. | Patchy rain possible | 22° /14° | 6.8 mm | 5 | |
| 6 Aug. | Overcast | 23° /13° | 0.1 mm | 5 | |
| 7 Aug. | Moderate or heavy rain shower | 22° /12° | 8.4 mm | 5 | |
| 8 Aug. | Moderate or heavy rain shower | 24° /14° | 30.2 mm | 5 | |
| 9 Aug. | Patchy rain possible | 23° /16° | 26.9 mm | 5 | |
| 10 Aug. | Moderate or heavy rain shower | 23° /16° | 17 mm | 5 | |
| 11 Aug. | Patchy rain possible | 21° /13° | 3.1 mm | 5 | |
| 12 Aug. | Patchy rain possible | 22° /12° | 3.4 mm | 5 | |
| 13 Aug. | Moderate rain at times | 24° /14° | 3.8 mm | 6 | |
| 14 Aug. | Patchy rain possible | 24° /14° | 2.6 mm | 6 | |
| 15 Aug. | Patchy rain possible | 24° /15° | 4.3 mm | 6 | |
| 16 Aug. | Moderate or heavy rain shower | 26° /16° | 12.7 mm | 6 | |
| 17 Aug. | Patchy rain possible | 25° /17° | 3.4 mm | 6 | |
| 18 Aug. | Moderate or heavy rain shower | 24° /17° | 17.6 mm | 5 | |
| 19 Aug. | Heavy rain at times | 19° /12° | 10.3 mm | 5 | |
| 20 Aug. | Patchy rain possible | 20° /12° | 2.7 mm | 5 | |
| 21 Aug. | Patchy rain possible | 18° /13° | 4.5 mm | 4 | |
| 22 Aug. | Patchy rain possible | 20° /10° | 3.5 mm | 5 | |
| 23 Aug. | Overcast | 23° /11° | 0 mm | 5 | |
| 24 Aug. | Overcast | 25° /13° | 0.9 mm | 6 | |
| 25 Aug. | Light rain | 20° /14° | 2.4 mm | 5 | |
| 26 Aug. | Light rain shower | 22° /15° | 4.8 mm | 5 | |
| 27 Aug. | Overcast | 24° /13° | 0 mm | 6 | |
| 28 Aug. | Mist | 22° /10° | 2.9 mm | 5 | |
| 29 Aug. | Light rain shower | 23° /11° | 4.5 mm | 6 | |
| 30 Aug. | Light rain shower | 22° /11° | 4.5 mm | 6 | |
| 31 Aug. | Overcast | 20° /12° | 1.7 mm | 5 | |
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Important Notice
Our weather forecast for Saint-Jean-sur-Richelieu in August 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 Saint-Jean-sur-Richelieu forecast closer to your planned date for the most up-to-date weather information.
Saint-Jean-sur-Richelieu in August - FAQ
What are the expected maximum and minimum temperatures in Saint-Jean-sur-Richelieu during August?
Enjoy moderate daytime temperatures of up to 23° and cooler nights around 13°. Ideal for a range of outdoor activities, from hiking to city tours.
How much rainfall should be expected in Saint-Jean-sur-Richelieu during August?
Significant rainfall exceeding 267.3 mm is expected in Saint-Jean-sur-Richelieu during August, occurring over more than 21 days. Preparing for wet conditions is recommended in your planning.
What are the typical wind conditions in Saint-Jean-sur-Richelieu during August?
The average wind speed in Saint-Jean-sur-Richelieu during August is 18 km/h, suggesting breezy to windy conditions, depending on your activities.
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