easeweather.com
Units
°C
°F
Montréal
Forecast Today Tomorrow
more
Quebec CanadaUnited States

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 25.4 °C. As the month progressed, temperatures tended to significantly cool down, reaching an average of 22.3 °C by the end of August.

  • Expect significant rainfall in Montréal during August, with an average of 20 rainy days.

  • New! Chat with our AI weatherman - it’s amazing and free.
Average dry days
11
Dry days
Average rainy days
20
Rainy days
Average snowy days
0
Snow days
Average temperatures
24°/14°
Temperatures
Average wind speed
16 km/h
Avg max wind
Average humidity
79 %
Avg humidity

Montréal in August average weather

Move between months or click on a day
Select a date

You can click on date

Access Montréal weather forecasts with a simple click. Select any date for comprehensive insights on temperature, rainfall, and wind conditions.
Got it

Temperatures trend during August in Montréal

See the weather trend as well as the moving average line

August weather day by day

Click on a date for more information
Date Weather Temperatures Rain UV More
1 Aug. Patchy rain possible
Patchy rain possible
26° /16° 0.5 mm 6
2 Aug. Overcast
Overcast
27° /15° 0 mm 7
3 Aug. Moderate or heavy rain shower
Moderate or heavy rain shower
27° /18° 12.1 mm 6
4 Aug. Moderate or heavy rain shower
Moderate or heavy rain shower
27° /17° 14.5 mm 6
5 Aug. Patchy rain possible
Patchy rain possible
23° /14° 6 mm 6
6 Aug. Overcast
Overcast
25° /14° 0 mm 6
7 Aug. Heavy rain at times
Heavy rain at times
23° /14° 13.4 mm 6
8 Aug. Moderate or heavy rain shower
Moderate or heavy rain shower
24° /15° 26.9 mm 6
9 Aug. Patchy rain possible
Patchy rain possible
23° /16° 40.2 mm 5
10 Aug. Moderate or heavy rain shower
Moderate or heavy rain shower
24° /16° 18.1 mm 6
11 Aug. Patchy rain possible
Patchy rain possible
23° /14° 2.5 mm 5
12 Aug. Moderate or heavy rain shower
Moderate or heavy rain shower
22° /13° 4.7 mm 5
13 Aug. Patchy rain possible
Patchy rain possible
26° /16° 1.5 mm 6
14 Aug. Patchy rain possible
Patchy rain possible
26° /15° 0.6 mm 6
15 Aug. Patchy rain possible
Patchy rain possible
25° /16° 0.9 mm 6
16 Aug. Moderate or heavy rain shower
Moderate or heavy rain shower
27° /17° 6.6 mm 6
17 Aug. Moderate rain at times
Moderate rain at times
25° /17° 2.2 mm 6
18 Aug. Moderate or heavy rain shower
Moderate or heavy rain shower
25° /18° 15.7 mm 6
19 Aug. Moderate or heavy rain shower
Moderate or heavy rain shower
19° /13° 13.8 mm 5
20 Aug. Patchy rain possible
Patchy rain possible
22° /12° 4.3 mm 5
21 Aug. Overcast
Overcast
19° /14° 3.2 mm 4
22 Aug. Patchy rain possible
Patchy rain possible
20° /12° 4.1 mm 5
23 Aug. Overcast
Overcast
24° /12° 0 mm 5
24 Aug. Overcast
Overcast
25° /14° 0.8 mm 6
25 Aug. Light drizzle
Light drizzle
20° /15° 1.8 mm 5
26 Aug. Light rain shower
Light rain shower
22° /15° 2.6 mm 5
27 Aug. Cloudy
Cloudy
24° /14° 0 mm 6
28 Aug. Mist
Mist
22° /12° 5 mm 5
29 Aug. Light rain shower
Light rain shower
25° /12° 3 mm 6
30 Aug. Light rain shower
Light rain shower
22° /11° 2 mm 5
31 Aug. Partly cloudy
Partly cloudy
21° /13° 2.7 mm 5
Next
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?
Enjoy moderate daytime temperatures of up to 24° and cooler nights around 14°. Ideal for a range of outdoor activities, from hiking to city tours.
How much rainfall should be expected in Montréal during August?
Significant rainfall exceeding 241 mm is expected in Montréal during August, occurring over more than 20 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 16 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 ☀️
Top locations in Montréal
Select a location for an accurate weather forecast
More Locations

Quick links

Location coordinates Where is Montréal?

Get accurate weather forecasts for Montréal, located at latitude 45.509 and longitude -73.588. Stay updated with localized weather information tailored for Montréal.

Related locations
Select a location for accurate weather forecast
More Locations
Found a mistake?
We appreciate your attention to details. Tell us here.