May weather forecast
Banff, Canada

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Weather in May

May brings a bout of freshness as the temperature continues to rise, and the town gears up for the warmer months. The weather conditions in May are typically mild, with more hours of sunshine than any preceding month. May stands as the month witnessing the largest number of rainy days, indicating the transition from a snowy landscape to a lush verdant one. The blending of colour across Banff's landscape marks an initiation of summer. Also, with the increase in temperature, the town bids farewell to the snowfall until autumn.

Temperature

The start of May signals an increase in the average high-temperature, moving from a wintry 1.6°C (34.9°F) in April to a chilly 7.9°C (46.2°F). Banff in May experiences a low-temperature average of -1.4°C (29.5°F).

Humidity

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

Rainfall

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

Snowfall

Months with snowfall are January through June, September through December. 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

The average length of the day in May is 15h and 37min.
On the first day of May, sunrise is at 6:13 am and sunset at 9:05 pm. On the last day of the month, sunrise is at 5:32 am and sunset at 9:47 pm MDT.

Sunshine

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

UV index

In Banff, the average daily maximum UV index in May is 2. A UV Index value of 2, and less, symbolizes a minimal health hazard from exposure to the Sun's UV rays for ordinary individuals.
Note: An average maximum UV index of 2 in May leads to these recommendations:
Most individuals face no major issues with lengthy exposure to the sun, but children, infants, and individuals with fair skin always require protection. Avoiding the Sun's peak radiation during midday hours is essential for health and safety. Protect your eyes, ears, face, and neck from the Sun by wearing a wide-brimmed hat. Remember this! The UV radiation of the Sun can be nearly doubled by the reflective properties of snow.

Frequently asked questions

What are the temperatures in May?

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

What is the average humidity in May?

In May, the average relative humidity is 79%.

How many days does it rain in May?

In Banff, 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 May, snow falls for 6.8 days, with typically accumulated 115mm (4.53") of snow.

How many hours of daylight does Banff have in May?

The average day length in May is 15h and 37min.

When is the sunrise / sunset in May?

In May, on the first day of the month, sunrise is at 6:13 am and sunset at 9:05 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, the average sunshine duration in May is 9h.

How high is the UV index in May?

The average daily maximum UV index in May is 2. A UV Index value of 2, and less, symbolizes a low health threat from unprotected exposure to UV radiation.
Average humidity
Average rainfall days
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

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).

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).

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).

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%).

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).

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).

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).

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).

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 4min

The month with the longest days is June (Average daylight: 16h and 30min).
The month with the shortest days is December (Average daylight: 8h and 0min).

  • Average sunshine in May: 9h and 0min

The month with the most sunshine is August (Average sunshine: 11h and 0min).
The months with the least sunshine are January and December (Average sunshine: 4h and 48min).

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).

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).

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).

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).

Banff, Canada

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