Our verdict
The best time to visit Montreal is September-October
The very hottest temperatures in Montreal get to around 29℃ (84℉) in the height of summer. In the winter, temperatures can get down to -18℃ (0℉) around January.
The longest days between sunrise and sunset in Montreal are usually in July, so if you want to get the most out of your daytime activities, be sure to plan your visit around this time. May sees the most amount of rain in a month if you’re ok with chancing getting drenched, so if you’re looking to stay dry, visit in September instead.
Find out everything you need to know about when to visit Montreal below, including detailed information about the weather and tools to help you find the best prices and book your trip.
Quick links: Fast facts / Seasons / Average temperatures / Monthly climate / FAQs / Map
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Montreal seasons
Before you continue, it’s important to know when the seasons are in Montreal as they might be different to yours depending on where in the world you’re travelling from. Montreal is in the Northern Hemisphere, so the seasons fall during these months:
| Season | Months |
|---|---|
| Summer | June to August |
| Autumn/fall | September to November |
| Winter | December to February |
| Spring | March to May |
Average temperatures in Montreal
If the temperature is a big factor for you to help you decide when to visit, the chart below shows the average minimum and maximum temperatures in Montreal for each month side-by-side so you can easily see the difference in weather throughout the year. To see the temperatures in both Celsius (°C) and Fahrenheit (°F), hover or tap the shaded boxes on the graph.
Montreal climate by month
If you already have a rough idea about which months you might want to travel, the section below shows a detailed breakdown of the climate in Montreal for each month so you can see if it all suits your wants and needs. Scroll down, or use the quick menu below to jump to your preferred month.
Jump to:
Montreal in January
- Average temperature: -9℃ (16℉)
- Average high temperature: -6℃ (22℉)
- Average low temperature: -13℃ (9℉)
- Average humidity: 90%
- Average sunny days: 11 days
- Average rainfall: 67mm (3") over 5 days
- Average snow days: 18 days
of pure sunshine
of showers or rain
What to pack: If you’re heading to Montreal in January, make sure you pack a thick snow/winter jacket, thermals and some extra layers as it's always very cold.
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Montreal in February
- Average temperature: -8℃ (18℉)
- Average high temperature: -4℃ (24℉)
- Average low temperature: -12℃ (11℉)
- Average humidity: 90%
- Average sunny days: 9 days
- Average rainfall: 63mm (2") over 5 days
- Average snow days: 18 days
of pure sunshine
of showers or rain
What to pack: If you’re heading to Montreal in February, make sure you pack a thick snow/winter jacket, thermals and some extra layers as it's always very cold.
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Montreal in March
- Average temperature: -2℃ (28℉)
- Average high temperature: 1℃ (34℉)
- Average low temperature: -6℃ (22℉)
- Average humidity: 85%
- Average sunny days: 11 days
- Average rainfall: 68mm (3") over 10 days
- Average snow days: 13 days
of pure sunshine
of showers or rain
What to pack: If you’re heading to Montreal in March, make sure you pack a thick snow/winter jacket, thermals and some extra layers as it's always very cold.
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Montreal in April
- Average temperature: 6℃ (43℉)
- Average high temperature: 10℃ (50℉)
- Average low temperature: 2℃ (35℉)
- Average humidity: 74%
- Average sunny days: 10 days
- Average rainfall: 80mm (3") over 17 days
- Average snow days: 5 days
of pure sunshine
of showers or rain
What to pack: If you’re heading to Montreal in April, make sure you pack a thick snow/winter jacket, thermals and some extra layers as it's always very cold.
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Montreal in May
- Average temperature: 14℃ (57℉)
- Average high temperature: 19℃ (65℉)
- Average low temperature: 9℃ (48℉)
- Average humidity: 73%
- Average sunny days: 12 days
- Average rainfall: 85mm (3") over 18 days
of pure sunshine
of showers or rain
What to pack: If you’re heading to Montreal in May, make sure you pack a warm jacket or coat.
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Montreal in June
- Average temperature: 18℃ (64℉)
- Average high temperature: 22℃ (72℉)
- Average low temperature: 13℃ (55℉)
- Average humidity: 78%
- Average sunny days: 11 days
- Average rainfall: 76mm (3") over 17 days
of pure sunshine
of showers or rain
What to pack: If you’re heading to Montreal in June, make sure you pack a light jumper or hoodie for the evenings and some light clothes for the daytime.
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Montreal in July
- Average temperature: 21℃ (70℉)
- Average high temperature: 26℃ (78℉)
- Average low temperature: 16℃ (61℉)
- Average humidity: 77%
- Average sunny days: 11 days
- Average rainfall: 60mm (2") over 17 days
of pure sunshine
of showers or rain
What to pack: If you’re heading to Montreal in July, make sure you pack t-shirts for the daytime and maybe a light jumper for the evenings as it cools down a bit.
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Montreal in August
- Average temperature: 20℃ (68℉)
- Average high temperature: 25℃ (77℉)
- Average low temperature: 15℃ (60℉)
- Average humidity: 77%
- Average sunny days: 13 days
- Average rainfall: 66mm (3") over 16 days
of pure sunshine
of showers or rain
What to pack: If you’re heading to Montreal in August, make sure you pack t-shirts for the daytime and maybe a light jumper for the evenings as it cools down a bit.
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Montreal in September
- Average temperature: 16℃ (61℉)
- Average high temperature: 21℃ (69℉)
- Average low temperature: 12℃ (53℉)
- Average humidity: 76%
- Average sunny days: 16 days
- Average rainfall: 55mm (2") over 12 days
of pure sunshine
of showers or rain
What to pack: If you’re heading to Montreal in September, make sure you pack a coat or jumper for the evenings and some light clothes for the daytime.
Montreal in October
- Average temperature: 9℃ (49℉)
- Average high temperature: 13℃ (55℉)
- Average low temperature: 6℃ (43℉)
- Average humidity: 78%
- Average sunny days: 14 days
- Average rainfall: 84mm (3") over 15 days
- Average snow days: 1 days
of pure sunshine
of showers or rain
What to pack: If you’re heading to Montreal in October, make sure you pack a warm jacket or coat.
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Montreal in November
- Average temperature: 2℃ (36℉)
- Average high temperature: 5℃ (41℉)
- Average low temperature: -1℃ (30℉)
- Average humidity: 78%
- Average sunny days: 14 days
- Average rainfall: 69mm (3") over 11 days
- Average snow days: 6 days
of pure sunshine
of showers or rain
What to pack: If you’re heading to Montreal in November, make sure you pack a thick snow/winter jacket, thermals and some extra layers as it's always very cold.
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Montreal in December
- Average temperature: -5℃ (24℉)
- Average high temperature: -2℃ (28℉)
- Average low temperature: -8℃ (19℉)
- Average humidity: 86%
- Average sunny days: 11 days
- Average rainfall: 75mm (3") over 9 days
- Average snow days: 14 days
of pure sunshine
of showers or rain
What to pack: If you’re heading to Montreal in December, make sure you pack a thick snow/winter jacket, thermals and some extra layers as it's always very cold.
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