The temperatures in Ontario in June are comfortable with low of 14°C and and high up to 21°C.
You can expect about 3 to 8 days of rain in Ontario during the month of June. 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 June 2025.
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
21° / 14°
Rainy Days
7
Snowy Days
0
Dry Days
23
Rainfall
120
mm
Sun Hours
10.3
Hrs
