September · Canada
Best time to visit Calgary in September Weather, crowds & prices
Weather in Calgary in September
Average temperature 14°C, 24 mm of rain, about 28 days with 6+ hours of sunshine and 59% humidity — based on the five most recent complete years of ERA5 data (2021–2025).
September score
9.8/10
Ranked #1 of 12 months
- Avg temp
- 14°C
- Rainfall
- 24 mm
- Humidity
- 59%
- Days with 6h+ sun
- 28
- Crowd Density
- Moderate Crowds
- Average Expenses
- $$$ · Peak Season Rates ($$$)
September in Calgary scores 9.8/10 for sightseeing and cultural travel - the single best month of the year. Expect around 14°C, 24 mm of rain, and roughly 28 days with 6+ hours of sunshine this month.
A compact downtown, Bow River paths, and quick access to the Rockies define Calgary.
September in Calgary tops the year's climate scores
Temperatures hover around 14°C (57°F) — the kind of month where neither heat nor cold forces the schedule.
With around 24 mm of rain, any showers tend to pass through rather than settle in; about 28 days with 6+ hours of sunshine and 12.6 hours of daylight fill the rest.
On our climate-comfort scale this is the top-ranked month of the year for Calgary at 9.8/10 — the reference point every other month on this page is measured against.
Pack layers you can shed by midday plus one warm layer for the evening.
Expect peak pricing, and crowds are moderate. You are paying the year's highest rates for the year's best conditions — book early or shift a few weeks either side.
Frequently asked
- What is the weather like in Calgary in September?
- In September, Calgary averages 14°C, 24 mm of rain, and about 28 days with 6+ hours of sunshine. Its climate-comfort score is 9.8/10.
- Is September a good time to visit Calgary?
- September earns a 9.8/10 climate-comfort score. Use the year-round chart to weigh the weather against your budget and crowd preferences.
- How much does it rain in Calgary in September?
- Expect about 24 mm of rain in September. Average humidity is 59% and there are about 28 days with 6+ hours of sunshine.
Curated in Calgary
Tickets & experiences
Things to do in Calgary
Calgary, Canada. Live activities and tours from GetYourGuide, matched to this destination.