The temperatures in Ontario in June are comfortable with low of 18°C and and high up to 28°C.
There shouldn't be any rainy days in in Ontario during June. Having said that, the days are very hot in June so hanging out outside is more recomanded during the after noons and evening time.
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
28° / 18°
Rainy Days
0
Snowy Days
0
Dry Days
30
Rainfall
1
mm
Sun Hours
11.9
Hrs
