Montreal Weather in September

Mild and comfortable, with occasional showers. Average highs of 21°C and lows of 13°C, with around 8 rainy days expected throughout the month.

While September isn't our top-rated month for Montreal, it has its own appeal — typically lower prices, fewer crowds, and a more local feel.

Average high

21°C

Average low

13°C

Rainy days

8 days

Best months to visit

July, August

What to do in Montreal in September

Whatever the weather, Montreal rewards curious visitors. Here are some of the best ways to spend your time:

Explore the Old Port's cobblestone streets and riverside walks Ascend Mount Royal for city views and hiking trails Visit the Sainte-Catherine Cathedral and Notre-Dame Attend festivals (Jazz Fest, comedy, film, music) Browse boutiques in the Marais district Kayak the St. Lawrence River or nearby lakes

What to pack for September

Light layers work well — T-shirts and shorts for the day, a light jacket for evenings. Comfortable walking shoes are a must. Bring a compact umbrella just in case.