Ilanz Monthly Rainfall & Precipitation
This page shows both the average monthly rainfall and the number of rainy days in Ilanz, Grisons, Switzerland. Long-term data from 1990 to 2020 was used to calculate these averages. Now, let's break down all the details for a clearer picture.
Ilanz is known for its substantial rain/snowfall, with annual precipitation reaching 1771 mm (70 in). While the overall climate is wet, there are notable seasonal patterns that create interesting contrasts, as demonstrated in our graph below.
Monthly Precipitation Levels
The average number of days each month with precipitation (> 0.2 mm (0.01 in))
Ilanz experiences moderate seasonal variation in rainfall, with monthly averages ranging from 211 mm (8.3 in) in August, the wettest month, and 101 mm (4 in) in February, the driest month.
August, the wettest month, has a maximum daytime temperature of 18°C (64°F). The city receives 184 hours of sunshine in this period. During the driest month February you can expect a temperature of -1°C (30°F). For more detailed insights into the city's temperatures, visit our Ilanz Temperature page.
Annual Rainfall in Switzerland: City Comparison
The map below shows the annual precipitation across Switzerland. You can also select the different months in case you are interested in a specific month.
heavy rainfall
high
moderate
low
almost none
Ilanz vs World: Rainfall Compared
Ilanz's average annual precipitation is 1771 mm (70 in). Let's compare this to some popular worldwide tourist destinations:
Seville, Spain, experiences 541 mm (21 in) of rainfall annually, with wet winters and dry summers typical of southern Spain.
In Seoul, South Korea, the average annual precipitation is 1237 mm (49 in), with most rain falling during the summer monsoon season.
Melbourne, Australia, has 690 mm (27 in) of rainfall annually, spread fairly evenly throughout the year.
Kuala Lumpur, Malaysia, receives 2529 mm (100 in) of annual rainfall, characteristic of its equatorial tropical rainforest climate, with consistent rainfall throughout the year and peak months during March and November.
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.
Climate change is affecting precipitation patterns worldwide, including Ilanz:
- Changing Rainfall Patterns: Global warming causes drastic changes in the patterns of rainfall. Some areas have been experiencing increased frequency and intensity of rainfall, while other areas experience longer dry spells or even droughts.
- Local Impacts: Many regions are experiencing heavier rainfall in the winter months and drier, hotter summers. This affects agriculture, water resources, and ecosystems.
- Mawsynram in India is noted as being the wettest place on earth, with over 11 meters (36 feet) of rain falling every year.
- In contrast, Antofagasta in Chile is among the driest places on the planet, getting less than 0.1mm (0.004 inches) 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 Ilanz's weather, including sunshine hours, humidity levels, and temperature data, visit our Ilanz Climate page.
