The temperatures in Montreal in May are quite cold with temperatures between 9°C and 19°C, warm clothes are a must.
You can expect rain for roughly half of the month of May in Montreal. We’re expecting roughly 8 to 15 days of rain, so your rubber boots and umbrella are going to see plenty of use this month if you’re keen on staying dry.
Our weather forecast can give you a great sense of what weather to expect in Montreal in May 2025.
If you’re planning to visit Montreal in the near future, we highly recommend that you review the 14 day weather forecast for Montreal before you arrive.
Temperatures
19° / 9°
Rainy Days
10
Snowy Days
0
Dry Days
21
Rainfall
172
mm
Sun Hours
8.6
Hrs
