The temperatures in Ontario in May are quite cold with temperatures between 9°C and 16°C, warm clothes are a must.
You can expect about 3 to 8 days of rain in Ontario 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 Ontario in May 2024.
If you’re planning to visit Ontario in the near future, we highly recommend that you review the 14 day weather forecast for Ontario before you arrive.
Temperatures
16° / 9°
Rainy Days
7
Snowy Days
0
Dry Days
24
Rainfall
100
mm
Sun Hours
9.8
Hrs
