Month-by-month travel weather
Montreal September weather
Montreal, Canada · September
Cooler nights return
Heat drops and exploring feels easier. Evenings can feel cool—bring a layer.
September averages at a glance
Average low
around 11–12°C
Average high
around 19–21°C
Average precipitation
around 70–110 mm
Precip days
about 8–11 days
What to wear in September in Montreal
Actual feel will change with wind and rain, but use the suggestions below to build a comfortable layered outfit.
- • Light clothing + thin evening layer
- • Optional umbrella
Travel tips for visiting Montreal in September
- • Evening festivals and walks feel better with a thin jacket.
September weather in Montreal — FAQ
Q. Is September a good time to visit?
A. Often yes—comfortable temperatures for outdoor plans.
Explore Montreal
These pages are connected so you can compare conditions and decide for yourself.