May weather forecast and climate
Montreal, Canada

An extension of the St. Florence river with a distant view of the city of Montreal, Canada, on a warm summer morning
An extension of the St. Florence river with a distant view of the city of Montreal, Canada, on a warm summer morning

What is the temperature in May in Montreal?

The average high-temperature, in May, in Montreal, Canada, is 18.9°C (66°F), while the average low-temperature is 7.9°C (46.2°F).

How much does it rain in Montreal in May?

In Montreal, Canada, during May, the rain falls for 13.6 days and regularly aggregates up to 81.2mm (3.2") of precipitation.

Does it snow in Montreal in May?

In May, in Montreal, it doesn't snow. April is the latest month when it typically snows.

What is the average UV index in May in Montreal?

In Montreal, Canada, the average UV index in May is 6.
Average temperature in May - Montreal, Canada
  • Average high temperature in May: 18.9°C

The warmest month (with the highest average high temperature) is July (26.3°C).
The month with the lowest average high temperature is January (-5.3°C).

  • Average low temperature in May: 7.9°C

The month with the highest average low temperature is July (16.1°C).
The coldest month (with the lowest average low temperature) is January (-14°C).

Average rainfall in May - Montreal, Canada
  • Average rainfall in May: 81.2mm

The wettest month (with the highest rainfall) is August (94.1mm).
The driest month (with the lowest rainfall) is February (20.9mm).

Average rainfall days in May - Montreal, Canada
  • Average rainfall days in May: 13.6 days

The month with the highest number of rainy days is May (13.6 days).
The month with the lowest number of rainy days is February (4 days).

Average snowfall in May - Montreal, Canada
  • Average snowfall in May: 0mm

The month with the highest snowfall is January (495mm).
Months with the lowest snowfall are May, June, July, August and September (0mm).

Average snowfall days in May - Montreal, Canada
  • Average snowfall days in May: 0.1 days

The month with the highest number of snowfall days is January (15.3 days).
Months with the lowest number of snowfall days are June, July, August and September (0 days).

Average daylight in May / Average sunshine in May - Montreal, Canada
  • Average daylight in May: 14.9h

The month with the longest days is June (Average daylight: 15.6h).
The month with shortest days is December (Average daylight: 8.8h).

  • Average sunshine in May: 7.4h

The month with most sunshine is July (Average sunshine: 8.8h).
The month with least sunshine is December (Average sunshine: 2.7h).

Average UV index in May - Montreal, Canada
  • Average UV index in May: 6

Months with the highest UV index are June, July and August (UV index 7).
Months with the lowest UV index are January, November and December (UV index 1).

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