Montréal Weather in August

August in Montréal typically sees daytime highs of 27°C (81°F) and nighttime lows of 15°C (59°F). Rainfall is also possible this month, so it's worth packing an umbrella. It falls within the summer season.

Rainfall in Montréal in August

You can expect rain on around 13 days based on historical patterns, with 104 mm (4.1 in) average for the month. Individual showers can be quite heavy this month. A proper umbrella or rain jacket is worth having.

Temperature in Montréal in August

August in Montréal sees highs of 27°C (81°F) and lows of 15°C (59°F) overnight. August marks the summer season. The days can feel warmer than the evenings, so packing for both parts of the day is a good idea. At 15°C (59°F) overnight, it can feel quite a bit cooler after dark. Worth packing something warmer for evenings, but the cooler temperatures are ideal for sleeping.

Sunshine in Montréal in August

Enjoy a sunny month with about 245 hours of sunshine, the clear skies make Montréal even more beautiful.

Wind Speed in Montréal in August

August has wind speeds averaging 5 m/s (10 knots). You can expect gentle to moderate winds that move small trees and make flags wave steadily on typical days. Conditions typically range from light breezes to moderate winds.

Average water temperature in August

With water at 21°C (70°F), conditions are good for swimming and other water activities. You won't need a wetsuit and most people find it very comfortable.

So this is a great month to visit if you prefer dry days with pleasant temperatures.