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Kelowna Weather in September
September in Kelowna brings pleasant temperatures, with highs of 20°C (68°F) and nights dropping to 9°C (48°F). With excellent weather conditions overall, it's a good time to visit.
Rainfall in Kelowna in September
Based on our climate data of the past 30 years, about 8 days of rain are anticipated, with 47 mm (1.9 in) on average. Expect a fairly normal spread of rainfall this month, with no particular pattern of very heavy or very persistent showers.
Temperature in Kelowna in September
If you're visiting Kelowna in September, expect excellent temperatures with highs of 20°C (68°F) and overnight lows of 9°C (48°F). September is in the summer season. Even when the weather is stable, mornings and evenings can still feel distinctly cool. With lows around 9°C (48°F), nights are cold. The upside is that cool, crisp nights are often the best for a deep sleep.
Sunshine in Kelowna in September
The month enjoys around 216 hours of sunshine, creating mostly sunny days with good weather conditions.Our weather planner can help you find worldwide destinations with pleasant weather during this period. July, August and September typically offer the best weather for Kelowna.
Kelowna Temperature in September
Min Temperature
9°C (48°F)
Max Temperature
20°C (68°F)
Chance of Rain
28%
Precipitation
47 mm (1.9 in)
Rainy days
8 days
Humidity
42%
Sunshine
216 hours
Percentage Sunshine
56%
Kelowna Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Kelowna - and find the best time to visit.
Daily Historical Temperatures
50-year average (1976-2025)
Based on our historical records, temperatures in Kelowna typically drop from around 24°C (75°F) at the start of September to approximately 19°C (66°F) by the end. Nights are cold, with lows typically ranging from 5°C (41°F) to 11°C (52°F).
Average temperatures in September
Daily Historical Precipitation
50-year average (1976-2025)
Average daily rainfall for each day of the month based on long-term records.
Average precipitation in September
Historical weather records for Kelowna in September
Browse day-by-day weather records for Kelowna spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Kelowna historical weather extremes in September
Based on weather observations in Kelowna between 1976 and 2026, these are the recorded extremes during September.
- Kelowna recorded its highest September temperature of 36°C (97°F) on September 2, 2025.
- The lowest daytime temperature in September was 9°C (48°F), recorded on September 29, 2019.
- Nighttime temperatures dropped to -4°C (25°F) on September 28, 1983, marking the coldest September night on record.
Best Places in Canada in September
Find out more about the weather in Canada and which places have the best travel conditions in this month. See all of Canada in September →
perfect weather
pleasant
tolerable
unpleasant
poor
Perfect weather is subjective. On this map perfect weather has been defined with temperatures between 20°C (68°F) and 29°C (84°F) and not too much precipitation (less than 90 mm (3.5 in) a month).
What to Wear in Kelowna in September
For Kelowna in September, you'll want flexible clothing. It's wise to pack cotton shirts, comfortable shorts, and a pair of jeans for cooler evenings. A light sweater or jacket is useful for air-conditioned spaces (like buses) or unexpected cool moments. Rain is likely on several days, so bring a good rain jacket. And with plenty of sunshine hours, don’t forget sunglasses, sunscreen, and maybe a sun hat.
What To Do in Kelowna in September
We rated the following activities from 1 (least suitable) to 10 (best) to do.
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Cycling10/10 -
Walking10/10 -
Camping5/10 -
Outdoor sports10/10
Kelowna 3-Day Forecast
More climate data for Kelowna
Temperature Rainfall Sunshine Humidity
See the full Kelowna climate overview or explore weather in Canada.
Popular in September
Where to go in September - average daytime high across popular destinations.
Toronto
22°C (72°F) Niagara Falls23°C (73°F) Montréal
22°C (72°F) Ottawa22°C (72°F) Quebec City
20°C (68°F) Vancouver19°C (66°F) Calgary19°C (66°F) Whistler15°C (59°F) Bucket list
Need travel inspiration? Check out our bucket list articles and be inspired.
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