May weather forecast
Banff, Canada

Weather in May

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

Temperature

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

Humidity

In May, the average relative humidity is 79%.

Rainfall

In Banff, Canada, during May, the rain falls for 19.8 days and regularly aggregates up to 90mm (3.54") of precipitation. Throughout the year, in Banff, there are 166.4 rainfall days, and 589mm (23.19") of precipitation is accumulated.

Snowfall

January through June, September through December are months with snowfall in Banff. In Banff, in May, snow falls for 6.8 days, with typically accumulated 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 15h and 37min.
On the first day of the month, sunrise is at 6:14 am and sunset at 9:04 pm. On the last day of May, in Banff, sunrise is at 5:32 am and sunset at 9:47 pm MDT.

Sunshine

The average sunshine in May in Banff is 9h.

UV index

The average daily maximum UV index in May in Banff, Canada, is 2. A UV Index reading of 2, and below, represents a minimal health vulnerability from exposure to the Sun's UV radiation for average individuals.
Note: In May, the average maximum UV index of 2 translate into the following recommendations:
Extended sun exposure is not an issue for the majority. Children, infants, and fair-skinned individuals always need to be protected. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes. Caution! The reflection of snow can nearly double the intensity of the Sun's UV radiation.
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FAQ

What is the average humidity in May in Banff?

The average relative humidity in May in Banff is 79%.

How many days does it rain in May in Banff?

In May, in Banff, the rain falls for 19.8 days. Throughout May, 90mm (3.54") of precipitation is accumulated.

How much does it snow in Banff in May?

In Banff, in May, during 6.8 snowfall days, 115mm (4.53") of snow is typically accumulated.

What is the average length of the day in May in Banff?

In Banff, Canada, the average day length in May is 15h and 37min.

When is the sunrise / sunset in May in Banff?

On the first day of May, sunrise is at 6:14 am and sunset at 9:04 pm. On the last day of the month, sunrise is at 5:32 am and sunset at 9:47 pm MDT.

How long on average sun shines in May in Banff?

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

How high is the UV index in May in Banff?

In Banff, Canada, the average daily maximum UV index in May is 2. A UV Index value of 2, and less, symbolizes a minimal hazard to health from exposure to the Sun's UV radiation.

Average temperature in May
Banff, Canada

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).

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Average pressure in May
Banff, Canada

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).

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Average wind speed in May
Banff, Canada

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).

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Average humidity in May
Banff, Canada

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

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

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Average rainfall in May
Banff, Canada

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).

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Average rainfall days in May
Banff, Canada

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).

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Average snowfall in May
Banff, Canada

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

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

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Average snowfall days in May
Banff, Canada

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).

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Average daylight in May /
Average sunshine in May
Banff, Canada

Average daylight in May / Average sunshine in May - Banff, Canada
  • Average daylight in May: 15h and 37min

The month with the longest days is June (Average daylight: 16h and 30min).
The month with the shortest days is December (Average daylight: 7h and 59min).

  • Average sunshine in May: 9h

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

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Average sunshine days in May
Banff, Canada

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).

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Average UV index in May
Banff, Canada

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).
The months with the lowest UV index are January, February, March, October and November (UV index 1).

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Average cloud cover in May
Banff, Canada

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).

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Average visibility in May
Banff, Canada

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

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

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