What to Wear in Montreal in September
Pleasant early autumn. Expect 10°–20°C with 9 rainy days on average.
☀️
High
20°C
🌙
Low
10°C
🌧️
Rain days
9
🌡️
Feel
Mild & Comfortable
Typical outfit
~15°C average
About September in Montreal
September in Montreal typically brings pleasant early autumn. With averages of 10°–20°C, the conditions call for ideal sightseeing weather! layer smartly — mornings and evenings will be cooler.
Mornings feel cool but afternoons can warm up significantly. A trench or jacket over a lighter outfit is ideal.
September in other cities