Montréal Weather in August

In Montréal, August brings high daytime temperatures around 30°C (86°F), with nights cooling to 17°C (63°F). Some rainfall is to be expected.

Rainfall in Montréal in August

This month experiences about 11 days of rain according to historical data, averaging 57 mm (2.2 in). A fairly balanced picture this month, some wet days but nothing too extreme in terms of intensity.

Temperature in Montréal in August

If you're visiting Montréal in August, expect highs of 30°C (86°F) and overnight lows around 17°C (63°F). Overall, the month follows a fairly predictable daily temperature pattern. Nights drop to around 17°C (63°F), which is noticeably cooler than the daytime. A light jacket for the evening is a sensible addition, and the cool nights tend to make sleeping comfortable. On average, it is the warmest month of the year.

If you prefer enjoying temperate temperatures and rain-free days, May, June, July, September and October typically offer the best circumstances. If you're seeking pleasant, dry and sunny weather somewhere else in the world, our weather planner can help you explore other options.