Aarau weather in September (Aargau, Switzerland)

What should you pack for a trip to Aarau in September? Use this page to get an overview of the month’s weather conditions.

Temperatures

September in Aarau generally includes pleasant temperatures and high rainfall. Anticipate daytime temperatures around 20°C, while night temperatures can drop to 10°C.

Precipitation

Aarau in September usually receives high rainfall, averaging around 120 mm for the month. When we look at the climate data from the last 30 years, you can expect around 13 days of rain.

Average sunshine

The area experiences a moderate amount of sunshine, with approximately 162 hours of sunlight expected. This makes it neither too gloomy nor overly bright.

So this is a great month to visit if you prefer dry days with pleasant temperatures. June, July, August and September typically offer the most optimal weather. In contrast, January, February, March, November and December tend to have less optimal conditions.

For an in-depth look at the yearly conditions, visit our specialized Aarau climate page with graphs.

 

Aarau, monthly averages in September

Min Temperature 10°C  

Max Temperature 20°C  

Chance of Rain 43%  

Precipitation 120 mm  

Rainy days 13 days  

Humidity 77% *  

Sunshine 162 hours *  

Percentage Sunshine 47% *  

Data from: Basel, Switzerland (38 KM, 24 Miles).

Where to go in Switzerland in September

Find out more about the weather in Switzerland and which places have the best travel conditions in this month.

Weather conditions Weather

Temperatures

Precipitation

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Legend perfect weather pleasant tolerable unpleasant poor

Perfect weather is subjective. On this map perfect weather has been defined with temperatures between 20°C and 29°C and not too much precipitation (less than 90 mm a month).

So, what should you wear in this month?

For visitors traveling to Aarau, we recommend wearing layers. So maybe a skirt, t-shirt, shorts for during the day and jeans and a warm jacket for some days and evenings. Bring a rain jacket in case it rains during your stay. Plan on layering your clothes.

What To Do

We rated the following activities from 1 (least suitable) to 10 (best) to do.

Swimming

6/10

Cycling

9/10

Walking

9/10

Camping

6/10

Outdoor sports

9/10

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.