Montreal in September
Early autumn sweet spot
By Daan · Last reviewed October 2026
The short answer
September is the best month to visit Montreal.
September is one of the best months: warm days, cool evenings and the start of the autumn colours.
September in detail
What September actually feels like
- Weather
- 12–19°C
- Mild and mostly sunny.
- Crowds
- Moderate
- Steady visitor numbers; the main sights are busiest around midday.
- Prices
- $$$
- Mid-range hotel rates.
+Comfortable weather and fewer crowds.
–Prices are still high on weekends.
My tip for September
Plan a day on Mount Royal for the first colour.
- Walking
- Markets
- Terraces
How September compares
Against the other eleven months
1st of 12 overall in Montreal, 1st for weather, 7th for space, 7th for value. The emptiest month is March; the best value is March.
See all twelve months for MontrealAlso good in September
Weather
Weather in Montreal in September
In September Montreal averages a high of 19°C (66°F) and a low of 12°C (54°F), with about 101 mm of rain or snow over 13 wet days. The warmest month is July (around 27°C) and the coolest is January (around -5°C); the wettest month is July.
- Average high
- 19°C
- 66°F
- Average low
- 12°C
- 54°F
- Precipitation
- 101 mm
- Wet days
- 13
Climate data: Environment and Climate Change Canada. Temperatures are averages of daily highs and lows.
Quick answers
Montreal in September: the questions people ask
- Is September a good time to visit Montreal?
- September is the best month to visit Montreal. It ranks 1 of 12 months in Montreal overall (1 for weather, 7 for space, 7 for value). The main upside: Comfortable weather and fewer crowds. The main downside: Prices are still high on weekends.
- What is the weather like in Montreal in September?
- Average highs are around 19°C and lows around 12°C. Expect about 101 mm of rain or snow over roughly 13 wet days. Mild and mostly sunny. For comparison, the warmest month is July (around 27°C) and the coolest is January (around -5°C).
- Is Montreal crowded in September?
- Crowds are moderate. Steady visitor numbers; the main sights are busiest around midday. The quietest month is March.
- How expensive is Montreal in September?
- Prices are at level 3 of 5 ($$$). Mid-range hotel rates. The best-value month is March.
- When is the best time to visit Montreal?
- In the CrowdFreeViews month scores, September is the best month overall (this month). The quietest month is March and the best value is March.
Ready to book September in Montreal?
Comfortable weather and fewer crowds.
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