Aargau weather in September

Thinking about venturing to Aargau this September and curious about the weather conditions to expect? This page holds all the key information you seek, responding to your question:

What is the weather like in Aargau in September?

Aargau is a region in Switzerland. September in Aargau generally has temperatures that range from moderate to pleasant, with precipitation levels ranging from moderate to heavy.

The average maximum daytime temperatures vary from moderate in Blankenburg at 16°C to pleasant in Rheinfelden at 21°C. Nighttime temperatures generally drop to 10°C in Rheinfelden and 5°C in Blankenburg.

In September, precipitation varies across different areas. From moderate rainfall in Rheinfelden with an average of 100 mm to heavy rainfall in Säntis (the highest mountain in the Alpstein massif) with 178 mm. Most cities enjoy a balanced amount of sunshine, with around 166 hours of sunlight anticipated in Baden. This ensures the days are neither too dim nor excessively sunny.

For specific regional insights in Aargau for September, refer to the map provided below. For an in-depth overview of the yearly weather conditions, do visit our Aargau climate page.

Where to go in Aargau in September

Find the average weather conditions in September for the most popular destinations in Aargau on the map below. Click on a destination dot for more detailed information.

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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).

Popular destinations in Aargau

What is the weather like in September for the 5 most popular destinations in Aargau?

Average weather in Baden

In September Baden generally has pleasant temperatures with maximum daytime temperatures around 20°C, minimum nighttime temperatures around 11°C and high monthly rainfall. So on average the conditions are pleasant that month.

Baden
minimum temparatureMax temperature minimum temparatureMax temp
maximum temparatureMin temperature maximum temparatureMin temp
sun hoursMonthly sun hours sun hoursSun hours
precipitationMonthly rainfall precipitationRainfall
rain daysMonthly rainy days rain daysRainy days
conditionsWeather conditions conditionsWeather
<<   August August
<<  
25°C 
14°C 
215 hours 
136 mm 
16 days 
20°C 
11°C 
166 hours 
105 mm 
13 days 
October   >> October
>>  
15°C 
7°C 
110 hours 
94 mm 
12 days 
Climate in Baden

Average weather in Aarau

In September Aarau generally has pleasant temperatures with maximum daytime temperatures around 20°C, minimum nighttime temperatures around 10°C and high monthly rainfall. So on average the conditions are pleasant that month.

Aarau
minimum temparatureMax temperature minimum temparatureMax temp
maximum temparatureMin temperature maximum temparatureMin temp
sun hoursMonthly sun hours sun hoursSun hours
precipitationMonthly rainfall precipitationRainfall
rain daysMonthly rainy days rain daysRainy days
conditionsWeather conditions conditionsWeather
<<   August August
<<  
24°C 
14°C 
216 hours 
157 mm 
16 days 
20°C 
10°C 
162 hours 
120 mm 
13 days 
October   >> October
>>  
15°C 
6°C 
108 hours 
104 mm 
13 days 
Climate in Aarau

Average weather in Bad Zurzach

In September Bad Zurzach generally has pleasant temperatures with maximum daytime temperatures around 20°C, minimum nighttime temperatures around 10°C and high monthly rainfall. So on average the conditions are pleasant that month.

Bad Zurzach
minimum temparatureMax temperature minimum temparatureMax temp
maximum temparatureMin temperature maximum temparatureMin temp
sun hoursMonthly sun hours sun hoursSun hours
precipitationMonthly rainfall precipitationRainfall
rain daysMonthly rainy days rain daysRainy days
conditionsWeather conditions conditionsWeather
<<   August August
<<  
25°C 
14°C 
215 hours 
128 mm 
16 days 
20°C 
10°C 
166 hours 
101 mm 
13 days 
October   >> October
>>  
15°C 
6°C 
110 hours 
94 mm 
12 days 
Climate in Bad Zurzach

Average weather in Rheinfelden

In September Rheinfelden generally has pleasant temperatures with maximum daytime temperatures around 21°C, minimum nighttime temperatures around 10°C and moderate monthly rainfall. So on average the conditions are pleasant that month.

Rheinfelden
minimum temparatureMax temperature minimum temparatureMax temp
maximum temparatureMin temperature maximum temparatureMin temp
sun hoursMonthly sun hours sun hoursSun hours
precipitationMonthly rainfall precipitationRainfall
rain daysMonthly rainy days rain daysRainy days
conditionsWeather conditions conditionsWeather
<<   August August
<<  
25°C 
14°C 
216 hours 
123 mm 
16 days 
21°C 
10°C 
162 hours 
100 mm 
13 days 
October   >> October
>>  
15°C 
7°C 
108 hours 
96 mm 
13 days 
Climate in Rheinfelden

Average weather in Beinwil

In September Beinwil generally has pleasant temperatures with maximum daytime temperatures around 20°C, minimum nighttime temperatures around 11°C and high monthly rainfall. So on average the conditions are pleasant that month.

Beinwil
minimum temparatureMax temperature minimum temparatureMax temp
maximum temparatureMin temperature maximum temparatureMin temp
sun hoursMonthly sun hours sun hoursSun hours
precipitationMonthly rainfall precipitationRainfall
rain daysMonthly rainy days rain daysRainy days
conditionsWeather conditions conditionsWeather
<<   August August
<<  
24°C 
15°C 
215 hours 
170 mm 
17 days 
20°C 
11°C 
166 hours 
134 mm 
13 days 
October   >> October
>>  
15°C 
7°C 
110 hours 
109 mm 
13 days 
Climate in Beinwil

Is your destination not in the list? Have a look at other destinations in Aargau, in Switzerland.

Is September the best time to visit Aargau?

We believe that September is one of the best times to visit Aargau with overall pleasant weather in Baden. It's worth noting that weather conditions might differ depending on the location you visit.

Generally speaking, the best visiting conditions can be found in May, June, July, August and September offering mostly pleasant weather in Baden. In contrast, January, February, November and December tend to have poor weather conditions.

Interested in more climate information?

We have much more information about the climate in Aargau. Interested in the weather conditions in a specific month? Select the month below.

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  • Weather and climate has detailed information for every country in the world. Are you going to Switzerland? Get detailed 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 climate conditions. Find out where to go with our weather planner.