Banff
Canada
Long-term weather forecast
Long-term weather forecast

May weather forecast and climate
Banff, Canada

May, the last month of the spring, in Banff, is a mild month, with average temperature fluctuating between 14.7°C (58.5°F) and 1.9°C (35.4°F).

Temperature

In Banff, the average high-temperature in May rises, from a chilly 9.7°C (49.5°F) in April, to a moderate 14.7°C (58.5°F). In Banff, the average low-temperature is 1.9°C (35.4°F).

Humidity

In May, the average relative humidity is 40.5%.

Rainfall

In Banff, during 12.9 rainfall days, 48.3mm (1.9") of precipitation is typically accumulated. In Banff, during the entire year, the rain falls for 86.9 days and collects up to 322.4mm (12.7") of precipitation.

Snowfall

Months with snowfall are January through December. In Banff, during May, snow falls for 3.5 days and regularly aggregates up to 150mm (5.9") of snow. Throughout the year, there are 63.9 snowfall days, and 1912mm (75.3") of snow is accumulated.

Daylight

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

Sunshine

In Banff, the average sunshine is 6h.

UV index

The average daily maximum UV index in May is 6. A UV Index value of 6 to 7 symbolizes a high health risk from the exposure to the Sun's UV radiation for the average person.
Note: The average daily UV index of 6 transform into the following instructions:
Take precautions against overexposure. Protection against sun damage is needed. The Sun's UV radiation is most powerful between 10 a.m. and 4 p.m. To the extent possible, limit exposure to the direct sun during these hours. 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?

In Banff, in May, the average high-temperature is 14.7°C (58.5°F), and the average low-temperature is 1.9°C (35.4°F).

What is the average humidity in May in Banff?

In May, the average relative humidity in Banff is 40.5%.

How many days does it rain in May in Banff?

In May, in Banff, the rain falls for 12.9 days. Throughout May, 48.3mm (1.9") of precipitation is accumulated.

How many days does it snow in May in Banff?

In Banff, Canada, during May, snow falls for 3.5 days and regularly aggregates up to 150mm (5.9") of snow.

How many hours of daylight does Banff have in May?

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

How long on average sun shines in May in Banff?

In Banff, the average sunshine in May is 6h.

What is the UV index reading in May in Banff?

In May, the average daily maximum UV index in Banff, Canada, is 6. A UV Index of 6 to 7 symbolizes a high health vulnerability from the exposure to the Sun's UV rays.
Average temperature in May - Banff, Canada
  • Average high temperature in May: 14.7°C

Warmest months (with the highest average high temperature) are July and August (21.6°C).
The month with the lowest average high temperature is December (-5.2°C).

  • Average low temperature in May: 1.9°C

The month with the highest average low temperature is July (7.3°C).
The coldest month (with the lowest average low temperature) is December (-13.3°C).

Average humidity in May - Banff, Canada
  • Average humidity in May: 40.5%

The month with the highest relative humidity is December (66%).
The month with the lowest relative humidity is June (39.6%).

Average rainfall in May - Banff, Canada
  • Average rainfall in May: 48.3mm

The wettest month (with the highest rainfall) is July (67.8mm).
The driest month (with the lowest rainfall) is December (1.7mm).

Average rainfall days in May - Banff, Canada
  • Average rainfall days in May: 12.9 days

The month with the highest number of rainy days is July (16 days).
Months with the lowest number of rainy days are January and December (0.9 days).

Average snowfall in May - Banff, Canada
  • Average snowfall in May: 150mm

The month with the highest snowfall is November (308mm).
The month with the lowest snowfall is July (1mm).

Average snowfall days in May - Banff, Canada
  • Average snowfall days in May: 3.5 days

The month with the highest number of snowfall days is January (9.4 days).
The month with the lowest number of snowfall days is July (0.1 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 shortest days is December (Average daylight: 8h).

  • Average sunshine in May: 6h

The month with most sunshine is July (Average sunshine: 8h).
Months with least sunshine are January, November and December (Average sunshine: 2).

Average UV index in May - Banff, Canada
  • Average UV index in May: 6

The month with the highest UV index is July (UV index 8).
Months with the lowest UV index are January, February, November and December (UV index 1).