Montréal
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Montréal Weather in October

With daytime temperatures of 14°C (57°F) and nighttime lows of 5°C (41°F), October in Montréal brings moderate temperatures during the day. It is also the wettest month of the year, so pack an umbrella.

Rainfall in Montréal in October

Given that this is the rainiest month, it's wise to carry an umbrella to stay dry during unexpected showers. Past climate data indicates that roughly 13 days will see rain, totalling around 114 mm (4.5 in) for the month. When showers do arrive, they tend to be on the heavier side. Worth being prepared even if rain days are not that numerous.

Temperature in Montréal in October

In October, Montréal sees moderate temperatures, with highs of 14°C (57°F). Nights drop to around 5°C (41°F). The difference between afternoon and evening temperatures is usually noticeable. At 5°C (41°F) overnight, it gets properly cold after dark. On the bright side, cold nights tend to make for excellent sleeping conditions.

Sunshine in Montréal in October

The month experiences a moderate amount of sunlight, with 140 hours of sunshine. This provides a nice balance between sunshine and clouds.

Wind Speed in Montréal in October

October sees wind speeds averaging 6 m/s (12 knots). You'll experience strong winds that cause whole trees to sway and require effort when walking against them. As an average, expect variation from moderate breezes to particularly windy days that affect daily routines.

Average water temperature in October

At 14°C (57°F), the water is cool but manageable for those who don't mind a bit of a shock getting in. Most people adjust after a few minutes.

If you prefer enjoying temperate temperatures and rain-free days, May, June, July, August and September typically offer the best circumstances. If you're seeking pleasant, dry and sunny weather somewhere else in the world, our weather planner can help you explore other options.

Montréal Temperature in October

Min Temperature
5°C (41°F)
Max Temperature
14°C (57°F)
Water Temperature
14°C (57°F)
Chance of Rain
42%
Precipitation
114 mm (4.5 in)
Rainy days
13 days
Humidity
62%
Windspeed
6 m/s (12 knots)
Sunshine
140 hours
Percentage Sunshine
43%

Montréal Weather by Month

Pick a month to see the average temperature, rainfall and sunshine in Montréal - and find the best time to visit.

Daily Historical Temperatures

50-year average (1976-2025)

Based on our historical records, temperatures in Montréal typically drop from around 16°C (61°F) at the start of October to approximately 10°C (50°F) by the end. Nights are cold, with lows typically ranging from 2°C (36°F) to 9°C (48°F).

Average temperatures in October

Daily Historical Precipitation

50-year average (1976-2025)

Average daily rainfall for each day of the month based on long-term records.

Average precipitation in October

Historical weather records for Montréal in October

Browse day-by-day weather records for Montréal spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.

Montréal historical weather extremes in October

Based on weather observations in Montréal between 1976 and 2025, these are the recorded extremes during October.

  • The warmest day in October was on October 5, 2025, with a maximum of 30°C (86°F).
  • The coldest October day was on October 30, 2020, with a maximum of 2°C (36°F).
  • The lowest overnight temperature recorded in October was -7°C (19°F) (October 31, 1988).

Best Places in Canada in October

Find out more about the weather in Canada and which places have the best travel conditions in this month. See all of Canada in October →

perfect weather
pleasant
tolerable
unpleasant
poor

Perfect weather is subjective. On this map perfect weather has been defined with temperatures between 20°C (68°F) and 29°C (84°F) and not too much precipitation (less than 90 mm (3.5 in) a month).

What to Wear in Montréal in October

The weather can be unpredictable in October, so pack clothes you can easily mix and match. You could bring jeans, other long pants, and a few t-shirts. A light jacket or light sweater will be pleasant for the cooler moments. High rain levels are expected, so pack waterproof gear and an umbrella or poncho. The water temperature sits at about 14°C (57°F), which is too chilly for most people to enjoy swimming. Leave the swimsuit at home unless you love cold water. It won't hurt to bring your sunglasses along, as you'll see some sunny periods.

What To Do in Montréal in October

We rated the following activities from 1 (least suitable) to 10 (best) to do.

  • Swimming
    5/10
  • Cycling
    5/10
  • Walking
    5/10
  • Camping
    3/10
  • Outdoor sports
    9/10

Montréal 3-Day Forecast

More climate data for Montréal

Popular in October

Where to go in October - average daytime high across popular destinations.

Bucket list

Need travel inspiration? Check out our bucket list articles and be inspired.