SeasonScore
Banff, Canada
Photo: Audree · CC BY-SA 3.0

Canada

Banff in September

🍂 Autumn

Cool and some showers.

🎒 Pack: warm jacket for evenings

Best months: Jul (9.4), Aug (9.3), Jun (8.8)

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Why September scores 8.7What goes into the score

How it works
🌡️ 16° / 5°C🌧️ 57 mm💧 dew pt 3°🍃 PM2.5 19
  • Weather comfort8.5
    • !Cool (15.5°C highs / 4.9°C lows)
    • ✓Comfortable humidity (dew point 3°C)
    • ✓Mostly dry (~57 mm rain)
  • Air quality7.8
    • ✓Moderate (PM2.5 ~19 µg/m³)
  • Seasonal hazards10.0
    • ·No notable seasonal hazards
  • Safety baseline8.5
    • ·Normal precautions
Compare monthsPut September side by side with another month
SepJul
Score8.7 Excellent9.4 Excellent
Season🍂 Autumn☀️ Summer
High / low16° / 5°21° / 10°
Rain57 mm67 mm
Humiditydew pt 3°dew pt 8°
PM2.519 µg/m³7 µg/m³

Typical-month data: NASA POWER (MERRA-2 reanalysis) 2015–2024 (modelled, not a forecast).

Holidays & crowdsSeptember 2027

Long weekend

There's at least one long weekend. Domestic travel picks up and popular spots get busier over those days.

  • Labor Day 4–6 Sep · 3 days off in a row

National holidays only; regional holidays and school breaks aren't included. Source: holidays (open-source public-holiday calendar).

Explore BanffEvents, sights, food & souvenirs

Check event dates locally

A mountain town in Banff National Park in the Canadian Rockies, known for turquoise lakes, peaks and wildlife.

Events in September
Larch seasonDate variesUsually mid-to-late September

Alpine larch trees turn golden before dropping their needles.

Why go: Larch Valley trail and parking get very busy.

Where: Larch Valley and other trails

Coming up later

Banff Mountain Film and Book FestivalDate variesUsually late October to early November

Films and books about mountains and adventure.

Why go: Screenings sell out, so book early.

Where: Banff Centre