SwitzerlandAverage weather for Arosa in September
It's cool in September in Arosa with an average temperature of 13°C. Temperatures this month range from a low of 11°C to a high of 17°C. At night, you can expect temperatures between 3°C and 9°C.
Start of September
The month of September starts in Arosa with cool temps, averaging around 14°C during the day and nights around 8°C. You can expect regular precipitation, but there will also be some sunny days in the early part of the month.
Mid September
By mid-September, daytime temps rise to around 15°C, with nights around 8°C. There’s a chance of some showers during this time, but plenty of dry and sunny days too.
End of September
By the end of September, the average daytime temperature in Arosa is around 12°C, while nighttime temps are about 5°C. A shower might pop up, but overall, the weather will be dry and sunny.
In September, there is an average of 106 mm of precipitation, spread over 12 days. Of the total precipitation, about 9,8 cm falls as snow in September. The wind speed is around 3 Bft, mostly coming from the South.
Arosa in September |
New York | ||
|---|---|---|---|
 Average temperature |
13°C | 27°C | |
 Max. temperature |
17°C | 31°C | |
| Min. temperature |
11°C | -5°C | |
 Total precipitation |
106 mm | 57 mm | |
| Rainy days |
12 days | 9 days | |
 Total snowfall |
9,8 cm | 0 cm | |
| Snowy days |
6 days | 0 days | |
August
UV index
The UV index is a maximum of 8 this month. That's a very high value on the intensity scale of 1 to 11. Unprotected skin can burn within 10-15 minutes.
Is September a good time to visit Arosa?
Looking for sun? September isn’t a good month to be in Arosa. There’s too much chance of rain this month.
Temperature records
With 25°C in 2022, Arosa reached the highest temperature in September over the past 10 years. The lowest daytime temperature in this month was -2°C in 2020. The extreme nighttime temperatures ranged from a lowest recorded value of -4°C to a highest value of 14°C.
Check out the climate of Arosa for all months and discover the best travel time
Curious about the weather in other parts of Switzerland? Check out the climate and weather for spots like Zurich, Geneva, Valais, or explore other destinations in Switzerland.
Daily Temperature in September in Arosa
This chart shows the average daily high and low temperatures in September for Arosa, in degrees Celsius. The red line represents the highs, and the blue line shows the lows. The days of the month are displayed at the bottom of the chart. The data, based on historical observations, provide the average temperatures for this month.
Daily Precipitation in September in Arosa
The chart below shows the average daily precipitation in September for Arosa, measured in millimeters over the past few years. Precipitation is always measured as water, even if it’s snow or hail. The days of the month are listed at the bottom of the chart.
A low average precipitation means that the chance of rain on that day is usually small, while a higher average suggests that it rained more often. But remember, it’s just an average, and every day can be different. Based on historical weather data for September, you can expect about 12 days of precipitation in Arosa.
Daily Snowfall in September in Arosa
This chart shows the average daily snowfall in September in Arosa, measured in centimeters. The bottom of the chart shows the days of the month. The data is based on historical measurements and gives an idea of the average snowfall in September.
Daily UV index in September in Arosa
This chart shows the average daily UV index in September in Arosa, with the UV index ranging from 0 to a maximum of 11. The bottom of the chart shows the days of the month. Based on historical data, this chart provides an idea of the daily UV radiation levels you can expect.
Temperature in September in Arosa over the years
This chart shows the average temperature in September in Arosa, measured in degrees Celsius, over the past few years.
Total precipitation in September in Arosa over the years
This chart shows the average precipitation in September in Arosa, measured in millimeters over the past years. Precipitation is always measured as water, whether it’s snow or hail.
Snowfall in September in Arosa per year
This chart shows the average snowfall in September in Arosa, measured in centimeters, over the past few years.
Daily weather in September for Arosa
Click on any day in September to get detailed info about the usual weather on that day in Arosa. Check out the historical temperatures and precipitation over the past 10 years on this day.
Weather experiences in September in Arosa
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Average weather in Arosa by month
Click on a month below to see detailed weather info for Arosa. Based on historical weather data, you can see the average temperature, precipitation, wind, and UV index for each day of the month.
