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

This page shows the average amount of rainfall per month in Aarau. The numbers are calculated over a 30-year period to provide a reliable average. Now, let’s break down all the details for a clearer picture.

Aarau has a relatively rain/snowy climate with high precipitation levels, averaging 1472 mm of rain/snowfall annually.

Monthly Precipitation Levels

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

The amount of precipitation varies moderately throughout the year. The wettest month, July, sees around 165 mm of rainfall, perfect for those who enjoy a bit of rain now and then. The driest month, February, still receives a respectable 91 mm of snow/rainfall.

July, the wettest month, has a maximum daytime temperature of 25°C. The city receives 237 hours of sunshine in this period. During the driest month February you can expect a temperature of 6°C. For more detailed insights into the city’s temperatures, visit our Aarau Temperature page.

Annual Precipitation in Switzerland

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.

Annual
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Annual average
precipitation: 1472 mm

More information

Legend heavy rainfall high moderate low almost none
Heavy annual rainfall has been defined as more than 1000 mm precipitation. High: 600 mm to 1000 mm. Moderate: 250 mm to 600 mm. Low: less than 250 mm.

Amsterdam Precipitation Compared World Wide

Aarau’s average annual precipitation is 1472 mm. Let’s compare this to some popular worldwide tourist destinations:

In Toronto, Canada, annual precipitation averages [964 mm], with snowy winters and rainy summers.

In Seoul, South Korea, the average annual precipitation is 1237 mm, with most rain falling during the summer monsoon season.

Melbourne, Australia, has 690 mm of rainfall annually, spread fairly evenly throughout the year.

Kuala Lumpur, Malaysia, receives 2529 mm of annual rainfall, characteristic of its equatorial tropical rainforest climate, with consistent rainfall throughout the year and peak months during March and November.

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.

Sea vs. Land Precipitation

The proximity of a location to a large body of water can significantly affect its rainfall patterns:

  • Ocean Influence: Coastal regions typically receive more rainfall due to the presence of moisture-laden winds from the ocean. These regions tend to have more humid climates and experience more frequent precipitation, especially in winter.
  • Continental Climates: Areas further from the sea, such as inland or continental regions, experience less frequent rainfall and more extreme seasonal variations in precipitation.

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


Current rainfall in Aarau

Friday
28 Feb
Partly cloudy
Partly cloudy
6°C
0.1 mm
Saturday
1 Mar
Cloudy
Cloudy
5°C
0.2 mm
Sunday
2 Mar
Clear sky
Clear sky
7°C
0 mm

Interested in more climate information?

This site provides you with all the information you need about the climate in Aarau.

Our site offers climate and forecast data for every country in the world. Are you going to Switzerland? On this website you can find historical weather averages for many cities in Switzerland. Not sure yet where to go? We now have a tool which recommends destinations that suit your ideal travel conditions. Find out where to go with our weather planner.