City in Quebec, Canada
Montreal weather by month and the best time to visit
When to go to Montreal
Jun–Aug is festival season with warm days; Sep–early Oct has fall colours. Dec–Mar is very cold and snowy; Jul–Aug is humid and busiest.
Montreal weather by month
Average daily high, rainfall and conditions.
- Jan-7°72 mm
- Feb-5°68 mm
- Mar0°76 mm
- Apr9°95 mm
- May17°93 mm
- Jun22°109 mm
- Jul25°95 mm
- Aug25°98 mm
- Sep21°88 mm
- Oct12°114 mm
- Nov4°81 mm
- Dec-4°98 mm
Monthly averages
| Month | High | Low | Rain | Humidity | Conditions |
|---|---|---|---|---|---|
| January | -7°C19°F | -18°C0°F | 72 mm | 92% | Freezing |
| February | -5°C23°F | -16°C3°F | 68 mm | 90% | Freezing |
| March | 0°C33°F | -9°C15°F | 76 mm | 87% | Freezing |
| April | 9°C49°F | -1°C31°F | 95 mm | 81% | Cold |
| May | 17°C63°F | 7°C44°F | 93 mm | 79% | Cool |
| June | 22°C72°F | 13°C55°F | 109 mm | 79% | Pleasant |
| July | 25°C78°F | 16°C60°F | 95 mm | 76% | Pleasant |
| August | 25°C77°F | 15°C59°F | 98 mm | 74% | Pleasant |
| September | 21°C70°F | 10°C50°F | 88 mm | 75% | Pleasant |
| October | 12°C54°F | 3°C38°F | 114 mm | 81% | Cool |
| November | 4°C39°F | -4°C26°F | 81 mm | 86% | Cold |
| December | -4°C26°F | -12°C10°F | 98 mm | 91% | Freezing |
Best months across Canada
| Place | Best months | Warmest month |
|---|---|---|
| Toronto | May–Sep | Jul (24°C) |
| Vancouver | Jun–Sep | Jul (24°C) |
| Montreal | May–Sep | Jul (25°C) |
| Banff | Jan–Feb, Jun–Sep | Jul (21°C) |
| Niagara Falls | May–Sep | Jul (26°C) |
| Quebec City | Feb, Jun–Sep | Jul (24°C) |
| Whistler | Jul–Aug, Dec–Mar | Jul (22°C) |
| Ottawa | May–Sep | Jul (26°C) |
| Calgary | Jun–Sep | Jul (25°C) |
| Victoria | May–Sep | Aug (21°C) |
| Jasper | Jun–Sep | Jul (22°C) |
| Halifax | Jun–Sep | Aug (21°C) |
| Tofino | Jun–Sep, Nov–Dec | Aug (18°C) |
| Edmonton | Jun–Sep | Jul (24°C) |
| Kelowna | Jun–Sep | Jul (30°C) |
| Yellowknife | Feb–Mar, Sep | Jul (21°C) |
| Mont-Tremblant | Jan–Mar, Sep–Oct | Jul (24°C) |
| Prince Edward Island | Jun–Sep | Aug (22°C) |
Quick answers
What is the best month to visit Montreal?
May–Sep. Jun–Aug is festival season with warm days; Sep–early Oct has fall colours. Dec–Mar is very cold and snowy; Jul–Aug is humid and busiest.
When is the rainy season in Montreal?
Rain peaks in October with about 114 mm. No month averages 150 mm or more.
What is the hottest month in Montreal?
July, with average highs of 25°C (78°F).
How cold does Montreal get?
The coolest nights are in January, averaging -18°C (0°F).
More about Montreal
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Sources
- NASA POWER climatology (2001–2020)
- STM Montréal
- Montréal-Trudeau Airport
- BIXI Montréal
- Tourisme Montréal
- McGill University Health Centre
Climate averages are modelled from NASA POWER (MERRA-2) for 2001–2020 at about 50 km resolution, so coasts and valleys can differ a little. Temperatures are adjusted by 1.2°C for the city's elevation. Compiled and reviewed by SoloSquare. How we compile and score this. Spotted something out of date? Tell us.