Mountain air

Banff weather in May

Temperature, rain and sunshine in May: long-term averages from 30 years of weather data, not a forecast.

49

Holiday weather in May

Fair

Best time to visit: June – September

Best for skiing: March – April

What is the weather like in Banff in May?

In May, Banff is cool: daytime highs average 11 °C, and nights cool down to about 2 °C. The sun shines for around 8 hours a day. Rain is frequent, with about 13 rainy days and 83 mm in total. Snow falls on about 6 days. All in all, May is a so-so month for a holiday in Banff.

May compared

How the weather changes from April to June. Tap a month to open it.

AprilAprMayMayJuneJun
Score304967
Day5°11°16°
Night−4°2°6°
Sun7 h8 h8 h
Rain days101318

More details for May

Daylight
15 h 31 min05:53 – 21:24
UV index
7 · highclear sky, noon (estimate)All months
Muggy days
0 daysdew point 18 °C or moreAll months
Wind
13 km/haverage daily peakAll months
Cloud cover
64 %on averageAll months
Hot days
0 days30 °C or more
Snow days
6 days1 cm or more of fresh snowAll months
Time zone
UTC−6America/Edmonton

How the score comes together

  • Temperatureweight 50 %47 %
  • Sunshineweight 20 %75 %
  • Few rainy daysweight 30 %35 %

Each factor is rated from 0 to 100 % and weighted for the travel style “Mountain air”.

What to pack in May

  • Sunscreen
  • Sunglasses & sun hat
  • A jumper for the evenings
  • Hat, scarf & gloves
  • Rain jacket or umbrella

Banff in May: quick answers

Is Banff hot in May?

No. In May, Banff is cool: daytime highs average 11 °C and nights drop to about 2 °C.

Does it rain much in Banff in May?

Rain is frequent, with about 13 rainy days and 83 mm in total.

Banff month by month

Climate averages 1996–2025, not a forecast. Data: Copernicus ERA5 / ERA5-Land via Open-Meteo.com (CC BY 4.0), NOAA OISST, WMO 1991–2020 (NOAA NCEI), GeoNames (CC BY 4.0). Sources & licences