Hamilton is 2.4°C (4.3°F) warmer by day, Hamilton has 3.6°C (6.5°F) warmer nights, Montréal gets 286 mm (11.3 in) more rain a year.
Hamilton is at its warmest in July and coolest in January, while Montréal peaks in August and bottoms out in January. Month for month, Hamilton is the warmer of the two in 12 of 12 months.
Montréal is the wetter of the two, collecting 1,004 mm (39.5 in) of rain a year against 718 mm (28.3 in) in Hamilton. The most comfortable time to visit is June, July and August in Hamilton and June, July and August in Montréal.
| Hamilton | Metric | Montréal |
|---|---|---|
| 🌡️ Temperature | ||
| 21.8°C | 🌡️Average daytime high | 19.4°C |
| -4.8°C | 🌙Average nighttime low | -8.4°C |
| July | 🔥Hottest month | August |
| January | ❄️Coldest month | January |
| 🌧️ Rain | ||
| 718 mm | 🌧️Annual rainfall | 1,004 mm |
| July | ☔Wettest month | June |
| February | 🏜️Driest month | February |
| 💨 Climate | ||
| 77% | 💧Average humidity | 82% |
| 3.3 m/s | 💨Average wind speed | 3 m/s |
Overnight, Hamilton typically falls to around -4.8°C (23.4°F) while Montréal settles near -8.4°C (16.9°F).
Hamilton is hottest in July and coldest in January, whereas Montréal peaks in August and is coolest in January.
Hamilton sees the most rain in July and the least in February; Montréal is wettest in June and driest in February.
Montréal feels the more humid of the two, averaging 82% relative humidity against 77%.
For Montréal, the pick of the year is June, July and August.
Month by month, here is the coldest night, the average day and the hottest afternoon each city can expect. Switch Compare to read rainfall, humidity, wind or solar instead, and Period to move between the long-term 45-year average and any single year — the shading is a quick warm-to-cool guide.
| Month | Hamilton | Montréal | ||||
|---|---|---|---|---|---|---|
| Min | Avg | Max | Min | Avg | Max | |
| January | -20.5 | -7.1❄️ | 6.2 | -32.3 | -14.7❄️ | 3 |
| February | -19.6 | -5.9 | 7.8 | -29.4 | -12.9 | 3.6 |
| March | -15.2 | 0.8 | 16.9 | -23.3 | -5.1 | 13 |
| April | -6 | 8.3 | 22.7 | -6.4 | 7.3 | 21 |
| May | -0.3 | 13.9 | 28.1 | 0.2 | 13.4 | 26.5 |
| June | 5.5 | 18.7 | 31.9 | 6.6 | 18 | 29.5 |
| July | 10.2 | 22🔥 | 33.8 | 10.8 | 21🔥 | 31.2 |
| August | 9.6 | 21.4 | 33.2 | 9.4 | 20.4 | 31.5 |
| September | 4.1 | 17.5 | 30.9 | 3.7 | 16.5 | 29.3 |
| October | -2.4 | 11.3 | 24.9 | -2.9 | 10 | 22.9 |
| November | -7.7 | 4.6 | 16.9 | -11.5 | 1.9 | 15.2 |
| December | -14.7 | -3 | 8.8 | -25.8 | -9.8 | 6.3 |
| Annual Avg | -4.7 | 8.5 | 21.8 | -8.4 | 5.5 | 19.4 |
Min / mean / max temperature (°C). 🔥 marks each city's hottest month, ❄️ its coldest; shading runs cool blue to warm red.
The same figures plotted out, so the shape of a typical year is easier to see than in a grid. Where the two lines run close together Hamilton and Montréal feel alike; where they separate, they are genuinely different places to be.
Hover or tap any point to read the exact figures. Hamilton Montréal
See how Hamilton and Montréal stack up against other cities. Swipe for more.
Choose which city to keep, then search for any other city in our database — we'll build the comparison for you.
Quick answers to the questions people ask most when comparing Hamilton and Montréal — each drawn straight from the climate figures above.
Hamilton is the warmer of the two. It averages daytime highs of 21.8°C (71.2°F) against 19.4°C (66.9°F) in Montréal — roughly 2.4°C (4.3°F) warmer by day. Nights are milder in Hamilton, with average lows of -4.8°C (23.4°F) versus -8.4°C (16.9°F).
Hamilton is hottest in July, averaging highs of about 33.8°C (92.8°F), while Montréal peaks in August at around 31.5°C (88.6°F). That makes Hamilton the hotter of the two at the height of summer.
Montréal gets colder. In its coldest month (January) overnight lows average about -32.3°C (-26.2°F), compared with -20.5°C (-4.9°F) at the low point of the year in Hamilton.
Montréal is the wetter city, collecting about 1,004 mm (39.5 in) of rain a year versus 718 mm (28.3 in) in Hamilton. Hamilton is wettest in July and driest in February; Montréal is wettest in June and driest in February.
Montréal is the more humid of the two, averaging 82% relative humidity over the year against 77% in Hamilton.
The most comfortable months in Hamilton are June, July and August, when average temperatures are at their mildest.
Montréal is at its most pleasant around June, July and August, based on the mildest average temperatures of the year.
Hamilton is the warmer city in all 12 months of the year. The gap is widest in January, about 7.6°C (13.7°F), and narrowest in May, about 0.5°C (0.9°F).
Montréal has the bigger seasonal swing, about 35.7°C (64.3°F) between its coldest and hottest months versus 29.1°C (52.4°F) in Hamilton — so Hamilton has the steadier, more even climate.
On climate alone, Hamilton comes out ahead — it offers warmer days, less rain and lower humidity than Montréal. Montréal is the better fit only if you'd actually prefer cooler weather, more rainfall and a more humid climate.
Every figure on this page is calculated from NASA POWER satellite climate data spanning 1981–2025 (45 years). The averages describe the long-term climate of Hamilton and Montréal, not a single year's weather or a short-range forecast.
