Weather in Montreal in May 2025
- May is usually the driest month of the year in Montreal
Average weather
Average temperature in Montreal in May
The expected average maximum temperature in May is +21°C with a maximum of +32°C and a minimum of 0°C.
The average maximum temperature goes up 63% by the end of the month, compared with the beginning of the month, from +12°C to +32°C.
Is Montreal warm or cold in May?
Montreal is typically mild in May.
Maximum temperatures go up compared to the previous month from +12°C to +20°C. The minimum temperature also goes up from +2°C to +9°C.
Pack a light jacket as it will be warm in the day and cool in the evenings.
Take a look at how May is compared to other months in Montreal:
Climate in Montreal in May
| April | May | June | ||||
|---|---|---|---|---|---|---|
| Avg. temperature | ||||||
| +12°C | +20°C | +24°C | ||||
| Min. temperature | ||||||
| -14°C | -3°C | +2°C | ||||
| Max. temperature | ||||||
| +30°C | +35°C | +35°C | ||||
| Rainfall | ||||||
| 88 mm | 94 mm | 105 mm | ||||
| Wind | ||||||
| 4 m/s | 4 m/s | 3 m/s | ||||
| Humidity | ||||||
| 62% | 61% | 66% | ||||
| Air pressure | ||||||
| 1013 HPa | 1013 HPa | 1012 HPa | ||||
| Sunny days | ||||||
| 6 | 6 | 6 | ||||
| Cloudy days | ||||||
| 9 | 9 | 8 | ||||
| Rainy days | ||||||
| 12 | 14 | 13 | ||||
| Snowy days | ||||||
| 4 | 0 | 0 | ||||
May often has better weather than April. It’s getting warmer as May arrives. The average maximum temperature goes up from +12°C to +20°C during the day. Prepare for more rain. Average rainfall goes from 88 mm to 94 mm. It feels drier, as humidity decreases from 62% to 61%. The average wind speed doesn’t change much during May, staying around 4 m/s. The amount of sunny days stay about the same, averaging 6 sunny days during the month.
June brings much the same weather, it remains good.
Wind
The average wind speed is 5 m/s getting up to 7 m/s which is a medium breeze. You can feel it, especially getting out of the water.
The average wind speed in Montreal is gradually decreasing during May, going from 7 m/s to 3 m/s over the course of the month.
Rain
How was the weather last May in Montreal?
Climate Change over Years
The climate in Montreal in May has not changed much over the last 43 years.
The average temperature was the lowest in 1980 (+10°C) and the highest in 2021 (+14°C). The driest year was 1985 with only 524 mm of rainfall, and the wettest year was 2023 with 2843 mm.
FAQ
Is May a good time to visit Montreal?
Can you sunbathe in Montreal in May?
Is Montreal rainy in May?
Is it sunny in Montreal in May?
Other cities in Canada
Monthly weather in Montreal
Source of the data
For this page, we’ve looked at the typical weather in Montreal, based on historical hourly weather data from January 1, 1979, to December 31, 2023.
For past dates, we show actual recorded data at the location at that time. Forecasts are based on recorded weather during that day of the year, averaged over the total years for which we have records (unless stated otherwise). The daily temperature is the highest recorded temperature in the shadow during that day.