Daytime highs, nighttime lows and the warmest cities across Switzerland this September.
Switzerland, experiences maximum daytime temperatures in September ranging from 10°C (50°F) in Ulrichen to 22°C (72°F) in Chiasso. Nighttime temperatures generally drop to 14°C (57°F) in Chiasso and 1°C (34°F) in Ulrichen.
Discover the typical September temperatures for the most popular locations of Switzerland on the map below. Detailed insights are just a click away.
Check the conditions for any month of the year.
Click on a destination dot for more details. Toggle the map to compare temperatures or precipitation across Switzerland.
Marker color shows the average daytime high temperature in September: blue is cold, red is hot.
Zermatt averages a daytime high of 11°C (52°F) in September, which is low for Switzerland.
Nighttime temperatures in Zermatt typically drop to around 1°C (34°F) in September.
Data insights from our comprehensive database indicate that Chiasso is the city with the highest warmth. Daytime peaks average near 22°C (72°F), while the nights are characterized by a low temperature close to 14°C (57°F).
The coldest city in September in Switzerland is Ulrichen when we check our database. The maximum daytime temperatures are around 10°C (50°F) and minimum nighttime temperatures fall around 1°C (34°F).
Across Switzerland, sunshine in September ranges from moderately sunny in Altdorf (138 hours) to sunny in Sion (210 hours).
The water temperature averages approximately 20°C (68°F) in Geneva this month, good for swimming and cooling off.
We have much more information about the climate in Switzerland.
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.
Need travel inspiration? Check out our bucket list articles and be inspired.
The 5 most scenic train journeys in Switzerland
Explore Switzerland's top 5 train journeys, featuring breathtaking Alpine views and engineering marvels like the Glacier Express and Bernina Express.
You'll love this Mountain roller coaster
Hotel Oeschinensee’s mountain coaster is a summer toboggan that you want to add to your bucket list. You'll get in your cart, sit down and fly across the track while enjoying the beautiful mountain scenery around you.
The Verzasca Valley
You can visit the Verzasca Valley in any season. It's an amazing place for swimming and it is a paradise for hikers. A must see for the bucket list.
Balloon at Chateau D'oex
If you are looking for a special place to visit in Europe in January we recommend visiting the annual balloon festival in Château-d'Oex, Switzerland.