Calgary Weather in May
What's the weather like in Calgary (Alberta) in May 2025?
The climate in Calgary during May can be summarized as cool and reasonably dry.
May is in the spring in Calgary and is typically the 5th warmest month of the year. Daytime maximum temperatures average around a cool 16°C (61°F), whilst at night 3°C (37°F) is normal.
| Daytime temperature | 15.9°C 60.5°F |
|---|---|
| Nightly temperature | 3°C 37.3°F |
| Average temperature | 9.4°C 48.9°F |
| Daily sunshine | 8.6 hrs |
| Avg rainfall | 55 mm 2.2 ins |
| Rainy days | 10 days |
| Sea temperature | 6.9°C 44.5°F |
| Humidity | 56% |
| Windspeed | 16.9kph 11 mph |
On average May is the 3rd wettest month of the year in Calgary with around 55mm 2.2 inches of rain making it a reasonably dry time to visit. This rainfall is typically spread over 10 days, although this may vary considerably.
On the flip side this corresponds to an average of 8.6 hours of sunshine per day.
May temperatures in Calgary
May rainfall
May hourly sunshine
The data used in these monthly averages covers a period of over 100 years right up until last year. As such they are a valid prediction of what to expect for the weather in Calgary in May 2025.
Other monthly averages
Calgary weather stats
| Hottest month: | July | 22.6°C 72.7°F |
|---|---|---|
| Driest month: | February | 12mm 0.5ins |
| Sunniest month: | July | 10.9hrs |
| Coldest month: | January | -4.9°C 23.2°F |
| Wettest month: | June | 79mm 3.1ins |
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