May weather forecast
Calgary, Canada

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The magnificent skyscrapers of the city of Calgary, Canada
The magnificent skyscrapers of the city of Calgary, Canada

Weather in May

Calgary's weather shows a distinct shift in May, moving fully into the spring season as temperatures rise to a high of 15.4°C. Rainfall begins to increase significantly, registering at 46mm. This momentum brings along a more humid environment, adding a layer of freshness to the airg. Enveloped by gentle rain showers, the city emerges as a green oasis. The splashes of nature's hues in full bloom offer a spectacular sight to residents and visitors alike.

Temperature

May brings a rise in Calgary's average high-temperature, moving from a frosty 8.2°C in April to a moderate 15.4°C. Calgary experiences an average low-temperature of 5°C in the month of May.

Humidity

The average relative humidity in May is 62%.

Rainfall

In May, the rain falls for 13.8 days. Throughout May, 46mm of precipitation is accumulated. Throughout the year, in Calgary, there are 94.1 rainfall days, and 288mm of precipitation is accumulated.

Snowfall

Months with snowfall in Calgary are January through June, September through December. In May, it is snowing for 1.8 days. Throughout May, 26mm of snow is accumulated. Throughout the year, in Calgary, there are 75.3 snowfall days, and 629mm of snow is accumulated.

Daylight

In May, the average length of the day is 15h and 35min.
On the first day of the month, sunrise is at 6:08 am and sunset at 8:57 pm. On the last day of May, sunrise is at 5:27 am and sunset at 9:40 pm MDT.

Sunshine

In May, the average sunshine in Calgary is 9.8h.

UV index

The average daily maximum UV index in May is 4. A UV Index reading of 3 to 5 represents a moderate threat to health from exposure to the Sun's UV rays for the ordinary person.
Note: The maximum UV index of 4 during May leads to these instructions:
Be cautious. Those with fair skin can be subjected to burns in fewer than 30 minutes. To guard against the harmful effects of the Sun, minimize exposure during midday. For holistic sun protection encompassing the eyes, ears, face, and neck, a wide-brim hat is key. Be watchful! The reflection of snow can enhance the intensity of the Sun's UV radiation nearly double.
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FAQ

What is the temperature in May in Calgary?

In Calgary, 15.4°C is the average high-temperature and 5°C is the average low-temperature during May.

What is the average humidity in May in Calgary?

The average relative humidity in May is 62%.

How many days does it rain in May in Calgary?

In Calgary, Canada, in May, during 13.8 rainfall days, 46mm of precipitation is typically accumulated.

How many days does it snow in May in Calgary?

In Calgary, in May, during 1.8 snowfall days, 26mm of snow is typically accumulated.

How many hours of daylight does Calgary have in May?

In Calgary, the average day length in May is 15h and 35min.

When are sunrise and sunset in May in Calgary?

On the first day of May, sunrise is at 6:08 am and sunset at 8:57 pm. On the last day of the month, sunrise is at 5:27 am and sunset at 9:40 pm MDT.

How long on average sun shines in May in Calgary?

In Calgary, the average sunshine duration in May is 9.8h.

How high is the UV index in May in Calgary?

In Calgary, the average daily maximum UV index in May is 4. A UV Index reading of 3 to 5 represents a medium hazard to health from unsafe exposure to Sun's UV rays.
Average high temperature
Average low temperature
Average wind speed
Average max. wind speed
Average wind speed gusts
Average humidity
Average rainfall
Average rainfall days
Average snowfall
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in May
Calgary, Canada

Average temperature in May - Calgary, Canada
  • Average high temperature in May: 15.4°C

The warmest month (with the highest average high temperature) is August (22.9°C).
The month with the lowest average high temperature is December (-4.8°C).

  • Average low temperature in May: 5°C

The month with the highest average low temperature is July (10°C).
The coldest month (with the lowest average low temperature) is December (-11.5°C).

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Average pressure in May
Calgary, Canada

Average pressure in May - Calgary, Canada
  • Average pressure in May: 1013.6mbar

The month with the highest atmospheric pressure is February (1019.3mbar).
The month with the lowest atmospheric pressure is June (1010.8mbar).

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Average wind speed in May
Calgary, Canada

Average wind speed in May - Calgary, Canada
  • Average wind speed in May: 12.2km/h

The windiest month (with the highest average wind speed) is January (13.1km/h).
The calmest month (with the lowest average wind speed) is August (10.3km/h).

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Average humidity in May
Calgary, Canada

Average humidity in May - Calgary, Canada
  • Average humidity in May: 62%

The months with the highest relative humidity are January and February (82%).
The month with the lowest relative humidity is September (59%).

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Average rainfall in May
Calgary, Canada

Average rainfall in May - Calgary, Canada
  • Average rainfall in May: 46mm

The wettest month (with the highest rainfall) is June (65mm).
The driest month (with the least rainfall) is January (9mm).

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Average rainfall days in May
Calgary, Canada

Average rainfall days in May - Calgary, Canada
  • Average rainfall days in May: 13.8 days

The month with the highest number of rainy days is June (17 days).
The month with the least rainy days is November (2.5 days).

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Average snowfall in May
Calgary, Canada

Average snowfall in May - Calgary, Canada
  • Average snowfall in May: 26mm

The month with the highest snowfall is April (102mm).
The months with the least snowfall are July and August (0mm).

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Average snowfall days in May
Calgary, Canada

Average snowfall days in May - Calgary, Canada
  • Average snowfall days in May: 1.8 days

The month with the highest number of snowfall days is February (12.9 days).
The months with the least snowfall days are July and August (0 days).

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

Average daylight in May / Average sunshine in May - Calgary, 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 5min

The month with the most sunshine is July (Average sunshine: 11h and 0min).
The month with the least sunshine is December (Average sunshine: 5h and 12min).

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Average sunshine days in May
Calgary, Canada

Average sunshine days in May - Calgary, Canada
  • Average sunshine days in May: 14.3 days

The month with the most sunshine days is October (22.1 days).
The month with the least sunshine days is June (10.7 days).

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Average UV index in May
Calgary, Canada

Average UV index in May - Calgary, Canada
  • Average UV index in May: 4

The month with the highest UV index is July (UV index 5).
The month with the lowest UV index is January (UV index 1).

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Average cloud cover in May
Calgary, Canada

Average cloud cover in May - Calgary, Canada
  • Average cloud cover in May: 37

The month with the most cloud cover is February (Cloud cover 50).
The month with the least cloud cover is August (Cloud cover 24).

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Average visibility in May
Calgary, Canada

Average visibility in May - Calgary, Canada
  • Average visibility in May: 9km

The months with the highest visibility are June, August and September (10km).
The months with the lowest visibility are January, February, March, April, May, July, October, November and December (9km).

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Calgary, Canada

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