August weather forecast and climate
Montreal, Canada

An extension of the St. Florence river with a distant view of the city of Montreal, Canada, on a warm summer morning
An extension of the St. Florence river with a distant view of the city of Montreal, Canada, on a warm summer morning

What is the temperature in August in Montreal?

In Montreal, in August, the average high-temperature is 25.3°C (77.5°F), and the average low-temperature is 14.8°C (58.6°F).

How much does it rain in Montreal in August?

In Montreal, in August, it is raining for 11.6 days, with typically 94.1mm (3.7") of accumulated precipitation.

What is the wettest month in Montreal?

August is the month with the most rainfall in Montreal. Rain falls for 11.6 days and accumulates 94.1mm (3.7") of precipitation.

What is the month with the highest UV index in Montreal?

Months with the highest UV index in Montreal are June through August, with an average UV index of 7.

What is the average UV index in August in Montreal?

In August, the average UV index is 7.
Average temperature in August - Montreal, Canada
  • Average high temperature in August: 25.3°C

The warmest month (with the highest average high temperature) is July (26.3°C).
The month with the lowest average high temperature is January (-5.3°C).

  • Average low temperature in August: 14.8°C

The month with the highest average low temperature is July (16.1°C).
The coldest month (with the lowest average low temperature) is January (-14°C).

Average rainfall in August - Montreal, Canada
  • Average rainfall in August: 94.1mm

The wettest month (with the highest rainfall) is August (94.1mm).
The driest month (with the lowest rainfall) is February (20.9mm).

Average rainfall days in August - Montreal, Canada
  • Average rainfall days in August: 11.6 days

The month with the highest number of rainy days is May (13.6 days).
The month with the lowest number of rainy days is February (4 days).

Average snowfall in August - Montreal, Canada
  • Average snowfall in August: 0mm

The month with the highest snowfall is January (495mm).
Months with the lowest snowfall are May, June, July, August and September (0mm).

Average snowfall days in August - Montreal, Canada
  • Average snowfall days in August: 0 days

The month with the highest number of snowfall days is January (15.3 days).
Months with the lowest number of snowfall days are June, July, August and September (0 days).

Average daylight in August / Average sunshine in August - Montreal, Canada
  • Average daylight in August: 14.1h

The month with the longest days is June (Average daylight: 15.6h).
The month with shortest days is December (Average daylight: 8.8h).

  • Average sunshine in August: 7.9h

The month with most sunshine is July (Average sunshine: 8.8h).
The month with least sunshine is December (Average sunshine: 2.7h).

Average UV index in August - Montreal, Canada
  • Average UV index in August: 7

Months with the highest UV index are June, July and August (UV index 7).
Months with the lowest UV index are January, November and December (UV index 1).

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