Montreal weather in August
Long-run climate averages for Montreal, Quebec in August, plus what the forecast models say for the days ahead.
In August, Montreal averages 23°C by day and 15°C at night. It is the wettest month of the year here.
August in Montreal averages a daytime high of 23°C and an overnight low of 15°C, which reads as warm for this part of the world. It is among the three warmest months of the year here. It is also the wettest month, so build rain into any plan. Across the whole year Montreal sees roughly 1229 mm of precipitation.
Climate averages tell you what to pack. They do not tell you what next Tuesday looks like — for that, see the live Montreal forecast with every model compared and how much they currently agree.
Montreal weather by month
what to expect in Montreal through the yearHere is Montreal's typical weather in each month: the average daytime high and overnight low in °C, how each month feels, and the wettest month marked. Use it to plan any trip to Montreal by season.