ClimaGo › Montreal › Weather in September
Canada
Early fall returns comfortable temperatures perfect for wandering through neighborhoods and enjoying outdoor patios as summer crowds diminish and the city transitions into a more relaxed seasonal rhythm.
Avg High
20°C
Avg Low
10°C
Daily Rain
2.7mm
Rainfall
Low
✅ September is one of the best months to visit Montreal!
This French-Canadian gem sparkles with European charm, historic architecture, cutting-edge arts, exceptional restaurants and vibrant nightlife scene.