The best time to visit Montreal
Month-by-month climate averages for Montreal, Quebec, so you can pick your dates on data rather than guesswork.
The most comfortable time to visit Montreal is usually May, June, July and September, when daytime highs sit in the pleasant 16-26°C range and the heaviest August rain is behind you.
Montreal is warmest in July (highs near 24°C) and coldest in January (lows around -15°C), with roughly 1228 mm of precipitation across the year and August the wettest month. The sweet spot for most visitors is May, June, July and September. Expect overnight frost in January, February, March, November and December.
These are long-run averages. For the actual days you are travelling, check the live Montreal forecast - and note how much the models agree, because that tells you how much to trust it.
Montreal weather by month
what to expect in Montreal through the year, 1991-2020 averagesHere 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.