Saint-Jean-sur-Richelieu
August
Weather in Saint-Jean-sur-Richelieu for August 2026
Your guide to Saint-Jean-sur-Richelieu weather in August - trends and predictions
The forecast for the first days of August 2026 in Saint-Jean-sur-Richelieu predicts temperatures to be around 25 °C, close to the historical average.
In general, the average temperature in Saint-Jean-sur-Richelieu at the beginning of August is 24.6 °C. As the month progressed, temperatures tended to noticeably cool down, reaching an average of 21.6 °C by the end of August.
Saint-Jean-sur-Richelieu experiences heavy rainfall in August, with over 20 rainy days and an average total precipitation 171.4 mm.
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Temperatures
Rain 🌧️
More
5
Dry days
26
Rainy days
0
Snow days
23°/14°
Temperatures
18 km/h
Avg max wind
80 %
Avg humidity
Saint-Jean-sur-Richelieu Weather August
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Temperatures trend during August in Saint-Jean-sur-Richelieu
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August weather in Saint-Jean-sur-Richelieu day by day
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| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| 1 Aug. |  Sunny | 26° /19° | 3.9 mm | 7 | |
| 2 Aug. | Sunny | 25° /16° | 0 mm | 7 | |
| 3 Aug. |  Partly cloudy | 24° /16° | 2.3 mm | 6 | |
| 4 Aug. |  Moderate or heavy rain shower | 26° /17° | 13.2 mm | 6 | |
| 5 Aug. |  Patchy rain possible | 23° /14° | 4.6 mm | 5 | |
| 6 Aug. |  Overcast | 24° /12° | 0.1 mm | 5 | |
| 7 Aug. | Moderate or heavy rain shower | 24° /13° | 5.6 mm | 5 | |
| 8 Aug. | Moderate or heavy rain shower | 25° /14° | 20.1 mm | 6 | |
| 9 Aug. | Patchy rain possible | 26° /16° | 18 mm | 6 | |
| 10 Aug. | Moderate or heavy rain shower | 27° /17° | 11.3 mm | 6 | |
| 11 Aug. | Patchy rain possible | 26° /15° | 2.1 mm | 6 | |
| 12 Aug. | Patchy rain possible | 26° /14° | 2.3 mm | 6 | |
| 13 Aug. | Moderate rain at times | 26° /16° | 15.5 mm | 6 | |
| 14 Aug. | Patchy rain possible | 25° /14° | 1.8 mm | 6 | |
| 15 Aug. | Patchy rain possible | 25° /13° | 2.9 mm | 6 | |
| 16 Aug. | Moderate or heavy rain shower | 28° /14° | 8.5 mm | 6 | |
| 17 Aug. | Patchy rain possible | 23° /14° | 2.3 mm | 5 | |
| 18 Aug. | Moderate or heavy rain shower | 23° /13° | 11.7 mm | 5 | |
| 19 Aug. |  Heavy rain at times | 20° /11° | 6.9 mm | 5 | |
| 20 Aug. | Patchy rain possible | 20° /12° | 1.8 mm | 5 | |
| 21 Aug. | Patchy rain possible | 20° /13° | 3 mm | 4 | |
| 22 Aug. | Patchy rain possible | 23° /11° | 2.4 mm | 5 | |
| 23 Aug. | Overcast | 25° /12° | 0 mm | 5 | |
| 24 Aug. | Overcast | 25° /15° | 6.2 mm | 6 | |
| 25 Aug. |  Light rain | 22° /15° | 4.9 mm | 5 | |
| 26 Aug. | Light rain shower | 22° /14° | 3.2 mm | 5 | |
| 27 Aug. | Overcast | 23° /11° | 0 mm | 6 | |
| 28 Aug. |  Mist | 21° /9° | 1.9 mm | 5 | |
| 29 Aug. | Light rain shower | 22° /12° | 7.9 mm | 5 | |
| 30 Aug. | Light rain shower | 20° /10° | 3.9 mm | 5 | |
| 31 Aug. | Overcast | 21° /9° | 1.2 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.
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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 14°. 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 171.4 mm is expected in Saint-Jean-sur-Richelieu during August, occurring over more than 26 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.
August rainfall patterns in Saint-Jean-sur-Richelieu
Explore the daily rainfall trends and prepare for Saint-Jean-sur-Richelieus August weather 💧
Typically, Saint-Jean-sur-Richelieu has 26 rainy days in August with a total of 171.4 mm of rainfall.
UV exposure in Saint-Jean-sur-Richelieu during August
Stay informed about UV levels for safe outdoor activities throughout the month of August ☀️
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