Aargau Weather in September

Average temperatures, rainfall, sunshine and the best places to visit in Aargau, Switzerland in September.

Planning a getaway to Aargau, Switzerland this September and curious about the weather you should prepare for? Discover all the vital details you need on this page, solving your puzzle:

What to Expect in Aargau in September

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

Temperatures

The average maximum daytime temperatures vary from mild in Blankenburg at 16°C (61°F) to pleasant in Rheinfelden at 21°C (70°F). Nighttime temperatures generally drop to 10°C (50°F) in Rheinfelden and 5°C (41°F) in Blankenburg.

For specific regional insights in Aargau, Switzerland, refer to the map provided below.

Precipitation

In September, precipitation varies across different areas. From moderate rainfall in Rheinfelden with an average of 100 mm (3.9 in) to heavy rainfall in Säntis (the highest mountain in the Alpstein massif) with 178 mm (7 in).

Average sunshine

Most places get a reasonable amount of sunshine. Take Baden as an example - it receives around 166 hours of sunlight, offering a nice mix of sunny and partly cloudy days. Want to compare this with brighter destinations? Try our weather planner to explore your options.

Explore Aargau by month

Pick a month to see the average temperature, rainfall and sunshine in Aargau — and find the best time to visit. (based on Baden)

Best Places to Visit in Aargau in September

Click on a destination dot for more details. Toggle the map to compare temperatures or precipitation across Aargau.

perfect weather
pleasant
tolerable
unpleasant
poor

Perfect weather is subjective. On this map perfect weather has been defined with temperatures between 20°C (68°F) and 29°C (84°F) and not too much precipitation (less than 90 mm (3.5 in) a month).

Popular Destinations in Aargau

What is the weather like in September for some of the most popular destinations in Aargau, Switzerland?

Temperature range in Aargau (September)

Precipitation variation in Aargau (September)

Baden

In September Baden generally has pleasant temperatures with maximum daytime temperatures around 20°C (68°F), minimum nighttime temperatures around 11°C (52°F) and high monthly rainfall. So on average the conditions are pleasant that month.

August
September
October
Max temperature
25°C (77°F)
20°C (68°F)
15°C (59°F)
Min temperature
14°C (57°F)
11°C (52°F)
7°C (45°F)
Monthly sun hours
215 hours
166 hours
110 hours
Monthly rainfall
136 mm (5.4 in)
105 mm (4.1 in)
94 mm (3.7 in)
Monthly rainy days
16 days
13 days
12 days
Weather conditions

Aarau

In September Aarau generally has pleasant temperatures with maximum daytime temperatures around 20°C (68°F), minimum nighttime temperatures around 10°C (50°F) and high monthly rainfall. So on average the conditions are pleasant that month.

August
September
October
Max temperature
24°C (75°F)
20°C (68°F)
15°C (59°F)
Min temperature
14°C (57°F)
10°C (50°F)
6°C (43°F)
Monthly sun hours
216 hours
162 hours
108 hours
Monthly rainfall
157 mm (6.2 in)
120 mm (4.7 in)
104 mm (4.1 in)
Monthly rainy days
16 days
13 days
13 days
Weather conditions

Bad Zurzach

In September Bad Zurzach generally has pleasant temperatures with maximum daytime temperatures around 20°C (68°F), minimum nighttime temperatures around 10°C (50°F) and high monthly rainfall. So on average the conditions are pleasant that month.

August
September
October
Max temperature
25°C (77°F)
20°C (68°F)
15°C (59°F)
Min temperature
14°C (57°F)
10°C (50°F)
6°C (43°F)
Monthly sun hours
215 hours
166 hours
110 hours
Monthly rainfall
128 mm (5 in)
101 mm (4 in)
94 mm (3.7 in)
Monthly rainy days
16 days
13 days
12 days
Weather conditions

Rheinfelden

In September Rheinfelden generally has pleasant temperatures with maximum daytime temperatures around 21°C (70°F), minimum nighttime temperatures around 10°C (50°F) and moderate monthly rainfall. So on average the conditions are pleasant that month.

August
September
October
Max temperature
25°C (77°F)
21°C (70°F)
15°C (59°F)
Min temperature
14°C (57°F)
10°C (50°F)
7°C (45°F)
Monthly sun hours
216 hours
162 hours
108 hours
Monthly rainfall
123 mm (4.8 in)
100 mm (3.9 in)
96 mm (3.8 in)
Monthly rainy days
16 days
13 days
13 days
Weather conditions

Beinwil

In September Beinwil generally has pleasant temperatures with maximum daytime temperatures around 20°C (68°F), minimum nighttime temperatures around 11°C (52°F) and high monthly rainfall. So on average the conditions are pleasant that month.

August
September
October
Max temperature
24°C (75°F)
20°C (68°F)
15°C (59°F)
Min temperature
15°C (59°F)
11°C (52°F)
7°C (45°F)
Monthly sun hours
215 hours
166 hours
110 hours
Monthly rainfall
170 mm (6.7 in)
134 mm (5.3 in)
109 mm (4.3 in)
Monthly rainy days
17 days
13 days
13 days
Weather conditions

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

Popular cities in September

Day & night temperatures, rainfall and average weather in Aargau in September.

City Weather Day temp Night temp Rainfall
Baden 20°C (68°F) 11°C (52°F) 105 mm (4.1 in)
Aarau 20°C (68°F) 10°C (50°F) 120 mm (4.7 in)
Bad Zurzach 20°C (68°F) 10°C (50°F) 101 mm (4 in)
Rheinfelden 21°C (70°F) 10°C (50°F) 100 mm (3.9 in)
Beinwil 20°C (68°F) 11°C (52°F) 134 mm (5.3 in)
Frick 20°C (68°F) 10°C (50°F) 116 mm (4.6 in)

Aargau weather in September: frequently asked questions

What is the weather like in Aargau, Switzerland in September?

Aargau, Switzerland typically experiences pleasant weather in September, part of the season. Daytime highs in Baden average around 20°C (68°F), and temperatures drop to about 11°C (52°F) at night.

What is the average temperature in Aargau, Switzerland in September?

Baden averages a daytime maximum of 20°C (68°F) in September, with overnight lows close to 11°C (52°F).

Does Aargau, Switzerland get a lot of rain in September?

Baden typically receives notable rainfall in September, about 105 mm (4.1 in) on average across Aargau, Switzerland.

Is September a Good Time to Visit Aargau, Switzerland?

We believe that September is one of the best times to visit Aargau, Switzerland 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.

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 travel conditions. Find out where to go with our weather planner.

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