Montréal: Weather Guide & Climate
Complete month-by-month weather guide: Montréal. Best time to visit: June, July, August, September. Plan your trip with detailed climate data.
Climate Overview
Montréal has a cool climate with average yearly highs of 12°C, lows of 3°C, and approximately 11 rainy days per month.
The best time to visit Montréal is during June, July, August, September, when weather is pleasant and ideal for outdoor activities
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Air Quality
Best Time
Jun, Jul, Aug, Sep
Hottest
Coldest
Driest Month
Forecast for your trip dates
Up to 16 days ahead| Month | High | Low | Rainy days | Condition |
|---|---|---|---|---|
| January | -3°C | -11°C | 11 | Good |
| February | -2°C | -12°C | 9 | Good |
| March | 4°C | -4°C | 13 | Wet |
| April | 9°C | 0°C | 9 | Good |
| May | 18°C | 7°C | 6 | Good |
| June | 25°C | 14°C | 9 | Excellent (best) |
| July | 28°C | 19°C | 13 | Excellent (best) |
| August | 24°C | 16°C | 11 | Excellent (best) |
| September | 20°C | 11°C | 9 | Excellent (best) |
| October | 13°C | 5°C | 13 | Wet |
| November | 8°C | 1°C | 9 | Good |
| December | 1°C | -6°C | 14 | Wet |
Weather data: Open-Meteo Archive (2020-2025) • Open-Meteo.com (CC BY 4.0) • Historical avg. 2020–2025
Weather by Season
Winter
Dec–Feb
High: -1°C
Low: -10°C
Rainy days: 11 days/month
Spring
Mar–May
High: 10°C
Low: 1°C
Rainy days: 9 days/month
Summer
Jun–Aug
High: 26°C
Low: 16°C
Rainy days: 11 days/month
Autumn
Sep–Nov
High: 14°C
Low: 6°C
Rainy days: 10 days/month
Month-by-Month Weather Table
January
February
March
April
May
June
BestJuly
BestAugust
BestSeptember
BestOctober
November
December
| Month | High | Low | Rainy days | Condition | View Details |
|---|---|---|---|---|---|
| January | -3°C | -11°C | 11 | Good | View Details → |
| February | -2°C | -12°C | 9 | Good | View Details → |
| March | 4°C | -4°C | 13 | Wet | View Details → |
| April | 9°C | 0°C | 9 | Good | View Details → |
| May | 18°C | 7°C | 6 | Good | View Details → |
| June (best) | 25°C | 14°C | 9 | Excellent | View Details → |
| July (best) | 28°C | 19°C | 13 | Excellent | View Details → |
| August (best) | 24°C | 16°C | 11 | Excellent | View Details → |
| September (best) | 20°C | 11°C | 9 | Excellent | View Details → |
| October | 13°C | 5°C | 13 | Wet | View Details → |
| November | 8°C | 1°C | 9 | Good | View Details → |
| December | 1°C | -6°C | 14 | Wet | View Details → |
Montréal
French-speaking city, including cobbled Old Montreal, Old Montreal and Mont Royal views, festivals, and poutine.
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Common Questions
What type of climate does Montréal have?
Montréal has a Cool climate with average yearly temperatures of 12°C (highs) and 3°C (lows).
When is the best time to visit Montréal?
The best time to visit Montréal is during June, July, August, September, when temperatures average around 25°C and conditions are ideal for sightseeing.
What are the hottest and coldest months in Montréal?
The hottest month in Montréal is July with average highs of 28°C, while the coldest is February with average lows of -12°C.
When is the rainy season in Montréal?
Montréal sees the most rain in December (14 rainy days), while May is the driest month (6 rainy days).
More Montréal Guides
Best Time to Visit
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Things to Do
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Itineraries
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Overview
Complete travel guide for Montréal: top things to do, itineraries, and typical costs.