Are you considering a trip to Montreal in August? Well, the weather is usually on your side with an average maximum temperature of +77°F and about 6 sunny days. Just keep in mind that there may be some rain, with an average of 13 rainy days and 102 mm of precipitation. Expect good weather and pack accordingly to enjoy the outdoors. Search flightsin one click on Avionero.
Average weather
☀️
+77°F
Avg. max. temperature
+43°F
Min.
+95°F
Max.
102 mm
Total precipitation
71%
Avg. humidity
3 m/s
Avg. wind
6 ☀️
Sunny Days
8 ⛅️
Cloudy
13 🌦
Rainy
Our opinion: Montreal has good weather in August.
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Average temperature in Montreal in August
Here are the expected maximum, average and minimum temperatures in Montreal for August based on the historical data.
Last Year
Historical Data
The temperature in August is +75°F on average, with a range between a maximum of +81°F during the day and a minimum of +52°F at night.
The average maximum temperature goes up 0% by the end of the month, compared with the beginning of the month, from +70°F to +70°F.
Is Montreal warm or cold in August?
Montreal is typically warm in August.
Maximum temperatures go down compared to the previous month from +81°F to +77°F. The minimum temperature also goes up from +63°F to +63°F.
It’s generally warm, but pack a long-sleeve shirt for evenings.
August is one of the warmest months in Montreal, here is the comparison with other months:
Climate in Montreal in August
Montreal weather looks like this, on average, in August and the surrounding months.
July
August
September
Avg. temperature
+81°F
+77°F
+70°F
Min. temperature
+45°F
+43°F
+27°F
Max. temperature
+97°F
+95°F
+93°F
Rainfall
98 mm
102 mm
98 mm
Wind
3 m/s
3 m/s
3 m/s
Humidity
68%
71%
73%
Air pressure
1012 HPa
1014 HPa
1016 HPa
Sunny days
6
6
7
Cloudy days
8
8
9
Rainy days
13
13
13
Snowy days
0
0
0
August weather is still as good as in July.It’s getting colder in August. From +81°F in the day, the average maximum temperature lowers to +77°F.Prepare for more rain. Average rainfall goes from 98 mm to 102 mm.Humidity rises from 68% to 71%.The average wind speed doesn’t change much during August, staying around 3 m/s.The amount of sunny days stay about the same, averaging 6 sunny days during the month.
September brings much the same weather, it remains good.
Wind speed in Montreal in August based on historical data.
Last Year
Historical Data
The average wind speed is 3 m/s getting up to 6 m/s which is a medium breeze. You can feel it, especially getting out of the water.
The average wind speed in Montreal is gradually increasing during August, going from 3 m/s to 4 m/s over the course of the month.
Rain
Amount of rainfall in mm during August in Montreal based on historical data.
Last Year
Historical Data
A chance of rain on a typical day in August stands at 65%, leading to total precipitation of around 376 mm. The maximum amount of rainfall per day is around 86 mm, which is considered heavy rain.August is a pretty wet month with over 20 rainy days, so don’t forget to pack an umbrella, raincoat, and a pair of wellies.
August is one of the rainiest months in Montreal, here is a comparison with other months, total mm:
Montreal wettest month is October, where a typical day has a 52% chance of precipitation and 113 mm of rainfall per day. February, on the other hand, is the driest month with a mere 7% chance of precipitation and 17 mm of rainfall per day.
How was the weather last August in Montreal?
This is the weather in Montreal in August 2023:
1 August
☀️
+70°F
2 August
☀️
+77°F
3 August
🌧️
+76°F
4 August
🌧️
+80°F
5 August
☀️
+76°F
6 August
☀️
+80°F
7 August
🌧️
+72°F
8 August
🌧️
+79°F
9 August
☀️
+81°F
10 August
☀️
+81°F
11 August
🌧️
+73°F
12 August
☀️
+76°F
13 August
🌧️
+77°F
14 August
☀️
+76°F
15 August
☀️
+80°F
16 August
☁️
+77°F
17 August
☁️
+80°F
18 August
🌧️
+75°F
19 August
☁️
+68°F
20 August
☀️
+78°F
21 August
☁️
+76°F
22 August
☀️
+75°F
23 August
☀️
+78°F
24 August
☀️
+79°F
25 August
🌫️
+68°F
26 August
🌧️
+74°F
27 August
☀️
+74°F
28 August
☀️
+78°F
29 August
🌧️
+78°F
30 August
🌧️
+71°F
31 August
☀️
+70°F
In August 2023 Montreal had 16 sunny days, 4 cloudy days, and 10 rainy days. The average maximum temperature was +75°F, with an absolute maximum of +81°F and a minimum of +68°F. The average humidity was 80%, with a maximum of 100% and a minimum of 43%. The average wind speed was 3 m/s, with a maximum of 10 m/s and a minimum of 0 m/s.
Are you planning a trip in August?
Climate Change Over the Years
This is how Montreal climate has changed over the last 43 years.
The climate in Montreal in August has not changed that much over the last 43 years.
The average temperature was the lowest in 1980 (+51°F) and the highest in 2021 (+56°F). The driest year was 1985 with only 524 mm of rainfall, and the wettest year was 2023 with 2843 mm.
FAQ
Frequently asked questions about the weather in Montreal in August:
Is August a good time to visit Montreal?
August is a really good time to go to Montreal. The weather is nice so plan your packing around outdoor activities and exploring. Check out other good time to visit Montreal.
Can you sunbathe in Montreal in August?
August is warm in Montreal. You may enjoy some beach or pool time in the day, but pack something a tad warmer for the evening.
Is Montreal rainy in August?
Montreal is often rainy in August. You may get a bit damp when outside, so pack an umbrella, and maybe even a raincoat.
Is it sunny in Montreal in August?
Usually, it’s not very sunny in Montreal in August, often it’s pretty cloudy. Pack for any eventuality; layering can help reduce the number of bulky items needed.
For this page, we’ve looked at the typical weather in Montreal, based on historical hourly weather data from January 1, 1979, to December 31, 2023.
For past dates, we show actual recorded data at the location at that time. Forecasts are based on recorded weather during that day of the year, averaged over the total years for which we have records (unless stated otherwise). The daily temperature is the highest recorded temperature in the shadow during that day.
