The temperatures in Kelowna in September are quite cold with temperatures between 7°C and 18°C, warm clothes are a must.
You can expect about 3 to 8 days of rain in Kelowna 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 Kelowna in September 2025.
If you’re planning to visit Kelowna in the near future, we highly recommend that you review the 14 day weather forecast for Kelowna before you arrive.
Temperatures
18° / 7°
Rainy Days
3
Snowy Days
0
Dry Days
27
Rainfall
43
mm
Sun Hours
11.6
Hrs
