Whistler weather in September
September in Whistler: nice, soaked, with clean air — not the best time to visit.
#10 of 12 months in Whistler · #596 of 604 destinations to visit in September · comfort 28/100 (tier F)
Updated June 2026 · climate normals from ERA5 reanalysis
Whistler climate normals — September
| Daytime high | 19°C / 67°F | 😎 nice |
|---|---|---|
| Nighttime low | 10°C / 50°F | |
| Feels like (high) | 19°C / 66°F | |
| Rainfall | 187 mm / 7.3 in | ⛈ soaked |
| Rainy days | 15 days | |
| Humidity | 73% | 💧 humid |
| Dew point | 9°C / 49°F | |
| Sunshine | 8 h/day | |
| Daylight | 12.6 h | |
| Wind | 7 km/h / 4 mph | |
| Snowfall | 7.3 cm / 2.9 in | |
| Air quality (US AQI) | 32 | 🍃 good |
Monthly averages from ERA5 reanalysis. AQI is the mean US Air Quality Index for the month.
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Whistler in September — FAQ
- Is September a good time to visit Whistler?
- September in Whistler: nice, soaked, with clean air — not the best time to visit. It ranks #10 of 12 months for Whistler on SeasonMap's comfort score (28/100).
- What is the weather like in Whistler in September?
- In September, Whistler averages a daily high of 19.4°C and a low of 10.1°C, with about 186.6 mm of rain over roughly 14.6 rainy days.
- What is the air quality in Whistler in September?
- Whistler has a mean US Air Quality Index of about 32 in September.
- Does it snow in Whistler in September?
- Whistler sees roughly 7.3 cm of snowfall in September.