Kelowna weather in September
September in Kelowna: nice, a little rain, with clean air — one of the best months to visit.
#1 of 12 months in Kelowna · #12 of 897 destinations to visit in September · comfort 96/100 (tier S)
Updated June 2026 · climate normals from ERA5 reanalysis
Traveller notes on Kelowna in September
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Kelowna climate normals — September
| Daytime high | 24°C / 75°F | 😎 nice |
|---|---|---|
| Nighttime low | 14°C / 57°F | |
| Rainfall | 50 mm / 1.9 in | 🌦 some rain |
| Rainy days | 9 days | |
| Humidity | 61% | 💧 humid |
| Dew point | 10°C / 50°F | |
| Sunshine | 9.8 h/day | |
| Daylight | 12.6 h | |
| Wind | 9 km/h / 6 mph | |
| Snowfall | 0.7 cm / 0.3 in | |
| Air quality (US AQI) | 36 | 🍃 good |
Monthly averages from ERA5 reanalysis. AQI is the mean US Air Quality Index for the month.
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Kelowna in September — FAQ
- Is September a good time to visit Kelowna?
- September in Kelowna: nice, a little rain, with clean air — one of the best months to visit. It ranks #1 of 12 months for Kelowna on SeasonMap's comfort score (96/100).
- What is the weather like in Kelowna in September?
- In September, Kelowna averages a daily high of 23.9°C and a low of 13.8°C, with about 49.5 mm of rain over roughly 9.4 rainy days.
- What is the air quality in Kelowna in September?
- Kelowna has a mean US Air Quality Index of about 36 in September.