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Best time to visit · Quebec, Canada
For the most comfortable weather in Montréal, aim for May and July – September. September tops our comfort score at 86/100, with highs around 73°F (23°C) and 3.5 in (88 mm) of rain. June is a good shoulder-season month. The toughest months are November – January, mainly because of cool days.
Highs run from 21°F to 80°F across the year, and the yearly total is about 42.8 in (1087 mm) of rain and snow.
| Month | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high | 21°F-6°C | 25°F-4°C | 35°F2°C | 51°F11°C | 65°F19°C | 74°F23°C | 80°F27°C | 79°F26°C | 73°F23°C | 56°F13°C | 42°F5°C | 28°F-2°C |
| Avg low | 2°F-16°C | 5°F-15°C | 18°F-8°C | 33°F0°C | 46°F8°C | 57°F14°C | 63°F17°C | 61°F16°C | 53°F11°C | 40°F4°C | 28°F-2°C | 13°F-11°C |
| Rain/snow | 2.8 in72 mm | 2.7 in68 mm | 3.0 in76 mm | 3.7 in95 mm | 3.7 in93 mm | 4.3 in109 mm | 3.7 in95 mm | 3.9 in98 mm | 3.5 in88 mm | 4.5 in114 mm | 3.2 in81 mm | 3.9 in98 mm |
| Humidity | 92% | 90% | 87% | 81% | 79% | 79% | 76% | 74% | 75% | 81% | 86% | 91% |
| Cloud | 69% | 68% | 65% | 67% | 66% | 62% | 58% | 57% | 54% | 68% | 72% | 76% |
| Comfort | 43 | 44 | 44 | 59 | 82 | 74 | 80 | 81 | 86 | 65 | 43 | 38 |
Source: NASA POWER (public domain), 2001–2025 monthly averages on a ~50 km satellite and reanalysis grid, so coasts and valleys can differ from what's shown. The grid cell sits at about 38 m (125 ft), close to Montréal's own ~23 m. Precipitation includes snow as melted water; daylight is calculated from latitude. Check a forecast before you go.
The cold peaks here: highs of 21–28°F (-6–-2°C), and nights reach 2°F (-16°C). It's the driest season, with only about 9.4 in (238 mm) of rain or snow, 22% of the year's total. December – February are cold enough for snow. It holds the toughest stretch on our comfort score (December & January), averaging 42/100.
Temperatures climb through the season, from 35°F highs in March to 65°F by May. About 10.4 in (264 mm) of rain or snow falls across these months, 24% of the year's total. March is cold enough for snow. Comfort peaks here: May ranks with the year's best, and the season averages 62/100.
The warmest stretch of the year, with highs of 74–80°F (23–27°C). It's the wettest season, with about 11.9 in (302 mm) of rain, 28% of the year's total. July feels humid, with humidity near 76%. July & August are among the best-scoring months (season average 78/100).
Temperatures slide from 73°F highs in September to 42°F by November. About 11.1 in (283 mm) of rain or snow falls across these months, 26% of the year's total. November is cold enough for snow. Comfort peaks here: September ranks with the year's best, and the season averages 65/100.
By comfort score: 4 Great, 2 Good, 1 Fair and 5 Tough. Great months: May and July – September. Tap a month for its own guide.
For the most comfortable weather in Montréal, aim for May and July – September. September tops our comfort score at 86/100, with highs around 73°F (23°C) and 3.5 in (88 mm) of rain. June is a good shoulder-season month. The toughest months are November – January, mainly because of cool days.
October is the wettest month, averaging about 4.5 in (114 mm) of rain. February is the driest, with about 2.7 in (68 mm). The yearly total is around 42.8 in (1087 mm).
January is the coldest, with average lows of 2°F (-16°C) and highs of 21°F (-6°C). The warmest is July, with average highs of 80°F (27°C).
Yes: in July humidity averages 76% with warm temperatures, so it feels muggy. Summer highs peak around 80°F (27°C).
On average, yes: lows fall below 32°F (0°C) in November – March, bottoming out around 2°F (-16°C) in January.
Poll the group on May and July – September dates, then plan the days, packing and costs together.
