Are you considering a trip to Kelowna in September? Well, the weather is usually on your side with an average maximum temperature of +73°F and about 8 sunny days. Just keep in mind that there may be some rain, with an average of 12 rainy days and 46 mm of precipitation. Expect good weather and pack accordingly to enjoy the outdoors. Search flightsin one click on Avionero.
Average weather
☀️
+73°F
Avg. max. temperature
+27°F
Min.
+97°F
Max.
46 mm
Total precipitation
63%
Avg. humidity
1 m/s
Avg. wind
8 ☀️
Sunny Days
9 ⛅️
Cloudy
12 🌦
Rainy
Our opinion: Kelowna has good weather in September.
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Average temperature in Kelowna in September
Here are the expected maximum, average and minimum temperatures in Kelowna for September based on the historical data.
Last Year
Historical Data
The temperature in September is +75°F on average, with a range between a maximum of +88°F during the day and a minimum of +45°F at night.
The average maximum temperature goes down 33% by the end of the month, compared with the beginning of the month, from +77°F to +63°F.
Is Kelowna warm or cold in September?
Kelowna is typically warm in September.
Maximum temperatures go down compared to the previous month from +84°F to +73°F. The minimum temperature also goes down from +57°F to +50°F.
It’s generally warm, but pack a long-sleeve shirt for evenings.
Take a look at how September is compared to other months in Kelowna:
Climate in Kelowna in September
Kelowna weather looks like this, on average, in September and the surrounding months.
August
September
October
Avg. temperature
+84°F
+73°F
+59°F
Min. temperature
+37°F
+27°F
+5°F
Max. temperature
+102°F
+97°F
+82°F
Rainfall
30 mm
46 mm
64 mm
Wind
1 m/s
1 m/s
1 m/s
Humidity
55%
63%
73%
Air pressure
1013 HPa
1014 HPa
1016 HPa
Sunny days
11
8
4
Cloudy days
9
9
11
Rainy days
10
12
16
Snowy days
0
0
0
September weather is still as good as in August.It’s getting colder in September. From +84°F in the day, the average maximum temperature lowers to +73°F.Prepare for more rain. Average rainfall goes from 30 mm to 46 mm.Humidity rises from 55% to 63%.The average wind speed doesn’t change much during September, staying around 1 m/s.The days becoming less sunny, going from 11 sunny days in August to 8 in September.
Next month (October) brings a further decline in the weather.
Wind speed in Kelowna in September based on historical data.
Last Year
Historical Data
The average wind speed is 2 m/s getting up to 5 m/s which is a light breeze; barely moving the tree leaves.
The average wind speed in Kelowna is gradually increasing during September, going from 2 m/s to 2 m/s over the course of the month.
Rain
Amount of rainfall in mm during September in Kelowna based on historical data.
Last Year
Historical Data
A chance of rain on a typical day in September stands at 33%, leading to total precipitation of around 55 mm. The maximum amount of rainfall per day is around 16 mm, which is considered light rain.September is a pretty wet month with over 10 rainy days, so don’t forget to pack an umbrella, raincoat, and a pair of wellies.
Here’s how September is compared with other months in the amount of precipitation, total mm:
Kelowna wettest month is November, where a typical day has a 43% chance of precipitation and 73 mm of rainfall per day. January, on the other hand, is the driest month with a mere 16% chance of precipitation and 29 mm of rainfall per day.
How was the weather last September in Kelowna?
This is the weather in Kelowna in September 2025:
1 September
☁️
+76°F
2 September
☀️
+83°F
3 September
☀️
+84°F
4 September
☁️
+78°F
5 September
☁️
+78°F
6 September
☀️
+79°F
7 September
☀️
+78°F
8 September
☀️
+83°F
9 September
☀️
+83°F
10 September
☀️
+86°F
11 September
☀️
+85°F
12 September
☁️
+79°F
13 September
☁️
+79°F
14 September
☀️
+80°F
15 September
☀️
+85°F
16 September
☀️
+86°F
17 September
☀️
+88°F
18 September
☁️
+80°F
19 September
☀️
+67°F
20 September
🌧️
+64°F
21 September
☀️
+72°F
22 September
☀️
+75°F
23 September
☁️
+73°F
24 September
☁️
+68°F
25 September
☁️
+65°F
26 September
🌧️
+66°F
27 September
🌧️
+60°F
28 September
🌧️
+60°F
29 September
🌧️
+59°F
30 September
☁️
+62°F
In September 2025 Kelowna had 15 sunny days, 10 cloudy days, and 5 rainy days. The average maximum temperature was +75°F, with an absolute maximum of +88°F and a minimum of +59°F. The average humidity was 57%, with a maximum of 96% and a minimum of 16%. The average wind speed was 2 m/s, with a maximum of 11 m/s and a minimum of 0 m/s.
Are you planning a trip in September?
Climate Change Over the Years
This is how Kelowna climate has changed over the last 43 years.
The climate in Kelowna in September has not changed that much over the last 43 years.
The average temperature was the lowest in 1985 (+57°F) and the highest in 1998 (+63°F). The driest year was 2008 with only 327 mm of rainfall, and the wettest year was 1990 with 712 mm.
FAQ
Frequently asked questions about the weather in Kelowna in September:
Is September a good time to visit Kelowna?
September is a really good time to go to Kelowna. The weather is nice so plan your packing around outdoor activities and exploring. Check out other good time to visit Kelowna.
Can you sunbathe in Kelowna in September?
September is warm in Kelowna. You may enjoy some beach or pool time in the day, but pack something a tad warmer for the evening.
Is Kelowna rainy in September?
Kelowna is usually dry in September. Plan your packing around outdoor activities and exploring.
Is it sunny in Kelowna in September?
Usually, it’s not very sunny in Kelowna in September, often it’s pretty cloudy. Pack for any eventuality; layering can help reduce the number of bulky items needed.
For this page, we’ve looked at the typical weather in Kelowna, based on historical hourly weather data from January 1, 1979, to December 31, 2023.
For past dates, we show actual recorded data at the location at that time. Forecasts are based on recorded weather during that day of the year, averaged over the total years for which we have records (unless stated otherwise). The daily temperature is the highest recorded temperature in the shadow during that day.
