The temperatures in Oakville in September are comfortable with low of 14°C and and high up to 22°C.
You can expect about 3 to 8 days of rain in Oakville during the month of September. 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 Oakville in September 2025.
If you’re planning to visit Oakville in the near future, we highly recommend that you review the 14 day weather forecast for Oakville before you arrive.
Temperatures
22° / 14°
Rainy Days
5
Snowy Days
0
Dry Days
25
Rainfall
97
mm
Sun Hours
10.8
Hrs
