May weather forecast and climate
Banff, Canada

May, the last month of the spring, in Banff, is a chilly month, with average temperature ranging between max 7.9°C (46.2°F) and min -1.4°C (29.5°F).

Temperature

In May, the average high-temperature rises, from a wintry 1.6°C (34.9°F) in April, to a frosty 7.9°C (46.2°F). In May, in Banff, Canada, the average low-temperature is -1.4°C (29.5°F).

Humidity

In May, the average relative humidity is 79%.

Rainfall

In Banff, in May, during 19.8 rainfall days, 90mm (3.54") of precipitation is typically accumulated. In Banff, during the entire year, the rain falls for 166.4 days and collects up to 589mm (23.19") of precipitation.

Snowfall

January through June, September through December are months with snowfall in Banff. In Banff, during May, snow falls for 6.8 days and regularly aggregates up to 115mm (4.53") of snow. In Banff, during the entire year, snow falls for 133.1 days, and aggregates up to 1671mm (65.79") of snow.

Daylight

In May, the average length of the day is 15.6h.

Sunshine

In Banff, the average sunshine is 9h.

UV index

In Banff, the average daily maximum UV index is 2. A UV Index estimate of 2, and below, represents a low health risk from the exposure to the Sun's UV radiation for the average person.
Note: The average daily UV index of 2 in May transform into the following instructions:
Most people can stay in the Sun for up to 1 hour without burning, apart from children that always must be protected from sun exposure. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. A wide-brim hat offers excellent sun protection for eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Tightly woven, loose-fitting clothes provide additional protection from the Sun. Beware! The strength of the UV rays is increased nearly double-fold by the reflection of the snow.

What is the temperature in May in Banff?

The average high-temperature, in May, in Banff, is 7.9°C (46.2°F), while the average low-temperature is -1.4°C (29.5°F).

What is the average humidity in May in Banff?

In Banff, the average relative humidity in May is 79%.

How much does it rain in Banff in May?

In Banff, Canada, in May, it is raining for 19.8 days, with typically 90mm (3.54") of accumulated precipitation.

How many days does it snow in May in Banff?

In Banff, during May, snow falls for 6.8 days and regularly aggregates up to 115mm (4.53") of snow.

How many hours of daylight does Banff have in May?

In May, the average length of the day in Banff is 15.6h.

How long on average sun shines in May in Banff?

In Banff, Canada, the average sunshine in May is 9h.

How high is the UV index in May in Banff?

The average daily maximum UV index in May in Banff is 2. A UV Index estimate of 2, and below, represents a low health risk from the exposure to the Sun's UV rays.
Average temperature in May - Banff, Canada
  • Average high temperature in May: 7.9°C

The warmest month (with the highest average high temperature) is July (17°C).
The month with the lowest average high temperature is December (-8.1°C).

  • Average low temperature in May: -1.4°C

The month with the highest average low temperature is July (6°C).
The coldest month (with the lowest average low temperature) is February (-15.9°C).

Average pressure in May - Banff, Canada
  • Average pressure in May: 1014mbar

The month with the highest atmospheric pressure is December (1019.8mbar).
The month with the lowest atmospheric pressure is June (1011.7mbar).

Average wind speed in May - Banff, Canada
  • Average wind speed in May: 7.5km/h

The windiest month (with the highest average wind speed) is January (11.2km/h).
The calmest month (with the lowest average wind speed) is August (7.2km/h).

Average humidity in May - Banff, Canada
  • Average humidity in May: 79%

Months with the highest relative humidity are January and February (91%).
The month with the lowest relative humidity is August (62%).

Average rainfall in May - Banff, Canada
  • Average rainfall in May: 90mm

The wettest month (with the highest rainfall) is June (116mm).
The driest month (with the least rainfall) is January (18mm).

Average rainfall days in May - Banff, Canada
  • Average rainfall days in May: 19.8 days

The month with the highest number of rainy days is June (22.5 days).
The month with the least rainy days is January (9.9 days).

Average snowfall in May - Banff, Canada
  • Average snowfall in May: 115mm

The month with the highest snowfall is April (324mm).
Months with the least snowfall are July and August (0mm).

Average snowfall days in May - Banff, Canada
  • Average snowfall days in May: 6.8 days

The month with the highest number of snowfall days is March (21.2 days).
The month with the least snowfall days is July (0 days).

Average daylight in May / Average sunshine in May - Banff, Canada
  • Average daylight in May: 15.6h

The month with the longest days is June (Average daylight: 16.5h).
The month with the shortest days is December (Average daylight: 8h).

  • Average sunshine in May: 9h

The month with the most sunshine is August (Average sunshine: 11h).
Months with the least sunshine are January and December (Average sunshine: 4.8).

Average sunshine days in May - Banff, Canada
  • Average sunshine days in May: 6.3 days

The month with the most sunshine days is September (13.4 days).
The month with the least sunshine days is June (4.3 days).

Average UV index in May - Banff, Canada
  • Average UV index in May: 2

The month with the highest UV index is July (UV index 4).
Months with the lowest UV index are January, February, March, October and November (UV index 1).

Average cloud cover in May - Banff, Canada
  • Average cloud cover in May: 45

The month with the most cloud cover is February (Cloud cover 58).
The month with the least cloud cover is August (Cloud cover 25).

Average visibility in May - Banff, Canada
  • Average visibility in May: 8km

Months with the highest visibility are June, July, August, September and October (9km).
Months with the lowest visibility are January, February, March, April and December (7km).