The temperatures in Mississauga in May are quite cold with temperatures between 9°C and 18°C, warm clothes are a must.
You can expect about 3 to 8 days of rain in Mississauga during the month of May. It’s a good idea to bring along your umbrella so that you don’t get caught in poor weather.
Our weather forecast can give you a great sense of what weather to expect in Mississauga in May 2025.
If you’re planning to visit Mississauga in the near future, we highly recommend that you review the 14 day weather forecast for Mississauga before you arrive.
Temperatures
18° / 9°
Rainy Days
7
Snowy Days
0
Dry Days
23
Rainfall
141
mm
Sun Hours
9.3
Hrs
