Banff weather in September
Monthly temperatures, rain, humidity, what to wear and what to pack — 2024–2025 historical average
Banff September weather at a glance
In September, Banff averages 12.2°C, with typical highs of 20.1°C and lows of 5.4°C. The historical average is 6 wet days and 69% humidity.
Banff September temperature & humidity
Banff September rain & wet days
Pack a compact umbrella. Keep an indoor stop available between outdoor activities.
What to wear in Banff in September
T-shirts or long sleeves with one light outer layer should be comfortable. The typical day-to-night swing is about 15°C, so bring an extra layer.
- DaytimeLong sleeves and a light jacket · average high 20.1°C
- Morning & eveningLong sleeves with a jacket or cardigan · average low 5.4°C
- FootwearComfortable walking shoes; quick-dry footwear for rainy days.
Packing essentials
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Banff September sunrise & sunset times
2026 September · Local time (America/Edmonton)
| Date | Sunrise | Sunset | Daylight |
|---|---|---|---|
| 2026-09-01 | 06:56 | 20:28 | 13h 32m |
| 2026-09-15 | 07:18 | 19:56 | 12h 38m |
| 2026-09-30 | 07:42 | 19:22 | 11h 40m |
For sunset photos, arrive before the listed sunset time. Clouds, mountains and buildings can change when the sun becomes visible or disappears.
Calculated for the city coordinates with daylight saving applied. SunCalc · tz-lookup
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Best months to visit Banff
Bar height shows our simple weather-comfort score, not a safety rating; colour shows temperature.
September weather by year
Daily weather in 2025
Daily high and low temperatures; blue labels show precipitation
Frequently asked questions
What is Banff weather like in September?
In September, Banff averages 12.2°C, with typical highs of 20.1°C and lows of 5.4°C. The historical average is 6 wet days and 69% humidity. Our weather-comfort rating for this month is excellent.
Does it rain a lot in Banff in September?
There are about 6 wet days in September. A compact umbrella is still useful.
What should I wear in Banff in September?
T-shirts or long sleeves with one light outer layer should be comfortable. The typical day-to-night swing is about 15°C, so bring an extra layer.
What are the best months to visit Banff?
Recent weather data rates July, August, September among the more comfortable months.
Where can I check Banff weather in September in real time?
Check local webcams for the view right now and a local weather service for today’s forecast. Monthly temperatures here are historical averages.
What time are sunrise and sunset in Banff in September?
On 2026-09-15, calculated sunrise is 07:18 and sunset is 19:56 in local time (America/Edmonton). Times vary by date and terrain.
Banff weather by month
More Americas destinations in September
Open-Meteo (CC BY 4.0) · 2024–2025 historical data, aggregated and rounded by this site. Not a forecast or long-term climate normal. Calculation method and limitations