Canada
Whistler in September: weather & travel advice
This month's data profile
Rain shapes the decision
Whistler in September is climatically mixed. The average daily high is around 14 °C. With about 12 rainy days it is wet.
Historical monthly averages, not a weather forecast. Individual days and years can differ substantially.
Rank among 12 monthly averages
51/100 · #3
Warmth
#3
Dryness
#3
Sun
#6
Published best categories: City break
Whistler · SeptemberPhoto: Saif Alnuweiri · CC BY-SA 4.0Climate facts
- Average high
- 14 °C
- Average low
- 5 °C
- Rainy days (est.)
- 12 rainy days (est.)
- Sun (est.)
- 5 h/day
- Humidity
- 80 %
Climate evidence with direct month comparison
The highlighted row is the selected month. Precipitation total and rainy days are separate monthly averages.
| Month | Avg high °C | Avg low °C | Rainy days (est.) | Precipitation mm | Sun h/day (est.) | Humidity % | Wind m/s | Score |
|---|---|---|---|---|---|---|---|---|
| August | 18 | 8 | 11 | 71 | 6.3 | 78 | 0.3 | 68 |
| September (selected) | 14 | 5 | 12 | 104 | 4.5 | 80 | 0.3 | 51 |
| October | 6 | -1 | 18 | 202 | 2.5 | 88 | 0.3 | 21 |
How do the previous and next months compare?
Baseline: September (51/100)
Positive and negative values show the change from the selected month.
| Score Δ | Average high Δ | Average low Δ | Rainy days Δ | Rain Δ | Sun Δ | Humidity Δ | Wind Δ | |
|---|---|---|---|---|---|---|---|---|
| August | +17 | +3.8 °C | +3.3 °C | -1.2 | -33 mm | +1.8 h | -2 % | ±0 m/s |
| October | -30 | -7.6 °C | -5.2 °C | +6.1 | +97.8 mm | -2 h | +7.5 % | ±0 m/s |
All twelve months in context
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Useful next decisions
Frequently asked questions
How warm is Whistler in September?
The average daily high is around 14 °C, with an average daily low of about 5 °C.
Does it rain a lot in Whistler in September?
The curated estimate is about 12 rainy days per month, not a directly measured long-term average. Total precipitation averages around 104 mm for the month. A rainy day does not mean all-day rain.
When is the best time to visit Whistler?
By the climate score, July and August are the strongest months for Whistler. September is not among them.