Calgary Rainfall & Precipitation: Monthly Averages and Year-Round Insights

This page shows the average amount of rainfall per month in Calgary. The numbers are calculated over a 30-year period to provide a reliable average. Let's now guide you through the details for a complete overview.

Generally, Calgary has a moderate amount of precipitation, averaging 555 mm of rain/snowfall annually.

Monthly Precipitation Levels

The average number of days each month with precipitation (> 0.2 mm)

Calgary can be quite wet during June, receiving approximately 115 mm of precipitation over 12 rainy days.

In contrast January, experiences much drier conditions, with 17 mm of snowfall, spread across 8 snowy days.

June, the city’s wettest month, has a maximum daytime temperature of 20°C and receives 269 hours of sunshine. During the driest month January you can expect a temperature of -2°C. For more detailed insights into the city’s temperatures, visit our Calgary Temperature page.

Annual Precipitation in Canada

The map below shows the annual precipitation across Canada. You can also select the different months in case you are interested in a specific month.

Amsterdam Precipitation Compared World Wide

Calgary’s average annual precipitation is 555 mm. Let’s compare this to some popular worldwide tourist destinations:

Athens, Greece, receives an average annual precipitation of 400 mm, making it one of the drier Mediterranean climates with rainfall mostly in winter.

In Shanghai, China, the annual average precipitation is 1347 mm, with a humid subtropical climate.

Adelaide, Australia, enjoys 511 mm of annual precipitation, with dry summers and wet winters.

Singapore, situated near the equator, gets 2581 mm of rainfall annually, with no distinct dry season and consistent monthly precipitation.

How is Precipitation Measured?

Precipitation amounts are measured using specific gauges installed at weather stations, collecting both rain and snow and any other type of precipitation. Rainfall is measured directly in millimeters, while that from snow and ice is obtained by melting it. Automated systems often incorporate heaters to make this easier.

Information from these stations is transmitted via Wi-Fi, satellite, GPS, or telephone connections to central monitoring networks. This information is immediately updated and integrated into weather models and forecasts.

Interesting weather facts

• Mawsynram in India is noted as being the wettest place on earth, with over 11 meters of rain falling every year.
• In contrast, Antofagasta in Chile is among the driest places on the planet, getting less than 0.1mm per year, with some years recording virtually no rainfall.
• Nearly 1,650 thunderstorm cells are estimated over the planet at any given time.

For more detailed information about Calgary’s weather, including sunshine hours, humidity levels, and temperature data, visit our Calgary Climate page.