Canada
Jasper in September: weather & travel advice
This month's data profile
Rain shapes the decision
Jasper in September is climatically mixed. The average daily high is around 12 °C. With about 13 rainy days it is wet.
Historical monthly averages, not a weather forecast. Individual days and years can differ substantially.
Rank among 12 monthly averages
43/100 · #3
Warmth
#4
Dryness
#4
Sun
#6
Published best categories: none
Jasper · SeptemberPhoto: Joli Rumi · CC BY-SA 4.0Climate facts
- Average high
- 12 °C
- Average low
- 1 °C
- Rainy days (est.)
- 13 rainy days (est.)
- Sun (est.)
- 4 h/day
- Humidity
- 76 %
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 | 16 | 5 | 15 | 75 | 5.7 | 74 | 0.2 | 54 |
| September (selected) | 12 | 1 | 13 | 53 | 4.0 | 76 | 0.2 | 43 |
| October | 4 | -5 | 13 | 46 | 2.2 | 82 | 0.2 | 31 |
How do the previous and next months compare?
Baseline: September (43/100)
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 | +11 | +4.6 °C | +4.1 °C | +2.5 | +21.7 mm | +1.7 h | -2.4 % | ±0 m/s |
| October | -12 | -7.8 °C | -5.5 °C | ±0 | -7.2 mm | -1.8 h | +5.7 % | ±0 m/s |
All twelve months in context
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Useful next decisions
Frequently asked questions
How warm is Jasper in September?
The average daily high is around 12 °C, with an average daily low of about 1 °C.
Does it rain a lot in Jasper in September?
The curated estimate is about 13 rainy days per month, not a directly measured long-term average. Total precipitation averages around 53 mm for the month. A rainy day does not mean all-day rain.
When is the best time to visit Jasper?
No month in Jasper reaches the threshold for a clear recommendation in the climate score; the month comparison above shows the differences.