Arosa weather in September (Grisons, Switzerland)

Planning a trip to Arosa in September? This guide provides all the details you need.

In September, Arosa generally has moderate temperatures and high rainfall. Daytime temperatures hover around 13°C, while nights can cool down to about 3°C.

Arosa in September usually receives high rainfall, averaging around 131 mm for the month. Delving into the climate records from the past 30 years, one can predict that nearly 15 days of the month will see rainfall.

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

If you're looking for dry conditions and comfortable temperatures, September may not be the ideal month to visit Arosa. July generally stands out with the best circumstances. While January, February, March, April, May, June, September, October, November and December tend to showcase less optimal conditions.

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

 

Arosa, monthly averages in September

Min Temperature 3°C  

Max Temperature 13°C  

Chance of Rain 49%  

Precipitation 131 mm  

Rainy days 15 days  

Humidity 75% *  

Windspeed 7 km/h *  

Sunshine 162 hours *  

Percentage Sunshine 53% *  

* Data from: Davos Dorf, Switzerland (11 KM, 7 Miles).

Where to go in Switzerland in September

Find out more about the weather in Switzerland in September and which places have the best weather 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 Arosa in September?

Plan on layering your clothes. Some days or part of the day it will be nice and warm and some moments it can be a bit chilly. Bring a rain jacket in case it rains during your stay.

What To Do

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

Swimming

5/10

Cycling

5/10

Walking

5/10

Camping

3/10

Outdoor sports

9/10

Interested in more climate information?

Weather and Climate provides you with all the information you need about the climate in Arosa.

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