Measured, not vibes
Best Time to Visit Montreal
By measured weather comfort, the top months for Montreal are September, June, May — and RouteVerdict's editorial pick, which also weighs crowds and prices, is June, July, August, September. The table below is computed from ERA5 reanalysis data for 2020–2024, measured at Montreal (216 m elevation).
Month by month
Montreal weather and comfort, 2020–2024
| Month | Avg high | Wet days | Comfort | Season |
|---|---|---|---|---|
| January | -4.9°C / 23°F | 8.7 | 1 | |
| February | -3.1°C / 26°F | 9.7 | 1 | |
| March | 3.5°C / 38°F | 10.8 | 8 | |
| April | 10.8°C / 51°F | 10.2 | 32 | Shoulder |
| May | 18.8°C / 66°F | 7 | 77 | Best |
| June | 23.5°C / 74°F | 10.7 | 79 | Best |
| July | 25.4°C / 78°F | 11.5 | 74 | |
| August | 24°C / 75°F | 11.5 | 77 | |
| September | 20.1°C / 68°F | 7.3 | 81 | Best |
| October | 13.8°C / 57°F | 9.2 | 48 | Shoulder |
| November | 6.1°C / 43°F | 8.5 | 14 | |
| December | -0.5°C / 31°F | 11.2 | 3 |
Comfort is RouteVerdict's 0–100 score: 100·exp(−(high−23)²/162) × (1 − min(0.35, wet days × 0.02)). The full method is on the methodology page. Weather data by Open-Meteo.com (ERA5, CC BY 4.0), 2020–2024 normals. Wet day = ≥1 mm precipitation.
FAQ
Montreal timing questions
What is the best month to visit Montreal?
By measured weather comfort (ERA5 2020–2024), the top months are September, June, and May, with September scoring highest. RouteVerdict's editorial pick is June, July, August, and September, which also weighs crowds, prices, and events.
What is the hottest month in Montreal?
July, with an average daily high of 25.4°C (78°F).
What is the rainiest month in Montreal?
July, averaging 11.5 days with at least 1 mm of precipitation.
When is shoulder season in Montreal?
October and April — the best-scoring months outside both the measured top three and RouteVerdict's editorial peak-season pick.