Montréal
August
Weather in Montréal for August 2025
Your guide to Montréal weather in August - trends and predictions
In general, the average temperature in Montréal at the beginning of August is 26.4 °C. As the month progressed, temperatures tended to noticeably cool down, reaching an average of 24.1 °C by the end of August.
Montréal experiences heavy rainfall in August, with over 20 rainy days and an average total precipitation 149 mm.
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Temperatures
Rain 🌧️
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6
Dry days
25
Rainy days
0
Snow days
25°/16°
Temperatures
15 km/h
Avg max wind
73 %
Avg humidity
Montréal in August average weather
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| Mon. | Tue. | Wed. | Thu. | Fri. | Sat. | Sun. |
|---|---|---|---|---|---|---|
| 1  25° | 2  25° | 3  27° | ||||
| 4  28° | 5 26° | 6 28° | 7  26° | 8 24° | 9 24° | 10  26° |
| 11 26° | 12 24° | 13 27° | 14 26° | 15 26° | 16 27° | 17 26° |
| 18 25° | 19 23° | 20 27° | 21 25° | 22 24° | 23 25° | 24 28° |
| 25 24° | 26 24° | 27 24° | 28 23° | 29 25° | 30 26° | 31 23° |
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Temperatures trend during August in Montréal
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. | Moderate or heavy rain shower | 25° /16° | 3 mm | 6 | |
| 2 Aug. | Partly cloudy | 25° /15° | 0.8 mm | 6 | |
| 3 Aug. | Patchy rain possible | 27° /16° | 6.1 mm | 6 | |
| 4 Aug. | Sunny | 28° /17° | 8.1 mm | 6 | |
| 5 Aug. | Patchy rain possible | 26° /16° | 3.3 mm | 6 | |
| 6 Aug. | Sunny | 28° /15° | 0 mm | 7 | |
| 7 Aug. | Heavy rain at times | 26° /17° | 11.2 mm | 6 | |
| 8 Aug. | Moderate or heavy rain shower | 24° /15° | 16.5 mm | 6 | |
| 9 Aug. | Patchy rain possible | 24° /15° | 21.5 mm | 5 | |
| 10 Aug. | Cloudy | 26° /17° | 9.1 mm | 6 | |
| 11 Aug. | Moderate rain at times | 26° /16° | 2.8 mm | 6 | |
| 12 Aug. | Heavy rain at times | 24° /15° | 2.9 mm | 6 | |
| 13 Aug. | Patchy rain possible | 27° /16° | 0.8 mm | 6 | |
| 14 Aug. | Patchy rain possible | 26° /15° | 1 mm | 6 | |
| 15 Aug. | Patchy rain possible | 26° /15° | 0.5 mm | 6 | |
| 16 Aug. | Patchy rain possible | 27° /16° | 3.4 mm | 6 | |
| 17 Aug. | Patchy rain possible | 26° /17° | 1.5 mm | 6 | |
| 18 Aug. | Patchy rain possible | 25° /17° | 9 mm | 6 | |
| 19 Aug. | Moderate rain at times | 23° /15° | 7.2 mm | 5 | |
| 20 Aug. | Cloudy | 27° /15° | 2.2 mm | 6 | |
| 21 Aug. | Cloudy | 25° /16° | 4.4 mm | 6 | |
| 22 Aug. | Cloudy | 24° /15° | 3.5 mm | 5 | |
| 23 Aug. | Patchy rain possible | 25° /16° | 4.3 mm | 5 | |
| 24 Aug. | Patchy rain possible | 28° /16° | 0.6 mm | 6 | |
| 25 Aug. | Partly cloudy | 24° /17° | 0.9 mm | 6 | |
| 26 Aug. | Partly cloudy | 24° /17° | 3.7 mm | 6 | |
| 27 Aug. | Partly cloudy | 24° /14° | 0 mm | 6 | |
| 28 Aug. | Patchy rain possible | 23° /13° | 3.2 mm | 5 | |
| 29 Aug. | Moderate or heavy rain shower | 25° /14° | 5.8 mm | 6 | |
| 30 Aug. | Moderate or heavy rain shower | 26° /15° | 8.9 mm | 6 | |
| 31 Aug. | Partly cloudy | 23° /14° | 2.8 mm | 6 | |
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Important Notice
Our weather forecast for Montréal 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 Montréal forecast closer to your planned date for the most up-to-date weather information.
Montréal in August - FAQ
What are the expected maximum and minimum temperatures in Montréal during August?
During August, expect a variety of temperatures with highs around 25° and lows near 16°, suitable for diverse activities and preferences.
How much rainfall should be expected in Montréal during August?
Significant rainfall exceeding 149 mm is expected in Montréal during August, occurring over more than 25 days. Preparing for wet conditions is recommended in your planning.
What are the typical wind conditions in Montréal during August?
The average wind speed in Montréal during August is 15 km/h, suggesting breezy to windy conditions, depending on your activities.
August rainfall patterns in Montréal
Explore the daily rainfall trends and prepare for Montréals August weather 💧
UV exposure in Montréal during August
Stay informed about UV levels for safe outdoor activities throughout the month of August ☀️
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