Arosa
September
Weather in Arosa for September 2026
Your guide to Arosa weather in September - trends and predictions
With an average of 3 snowy days, Arosa usually enjoys a light touch of snow in September.
According to Arosa snow forecast for September 2026, 2 snowy days are expected in the next 2 weeks. The closest date with snow is Thursday, 17 September.Expect cooler weather in the next days in Arosa with the forecast suggesting a temperature of 11.6 °C, lower than the historical average.
In general, the average temperature in Arosa at the beginning of September is 15.1 °C. As the month progressed, temperatures tended to significantly cool down, reaching an average of 7.4 °C by the end of September.
The climate of Arosa in September is notably wet, with an average of 13 rainy days, and a total of 130.6 mm of precipitation.
Snow Forecast ❄️
Temperatures
Rain 🌧️
14
Dry days
13
Rainy days
3
Snow days
13°/4°
Temperatures
9 km/h
Avg max wind
78 %
Avg humidity
Arosa Weather September
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Temperatures trend during September in Arosa
See the weather trend as well as the moving average line
September weather in Arosa day by day
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| Date | Weather | Temperatures | Rain | Snow | More |
|---|---|---|---|---|---|
| 1 Sept. |  Light rain shower | 13° /5° | 10.1 mm | 0 cm | |
| 2 Sept. | Light rain shower | 11° /4° | 0.8 mm | 0 cm | |
| 3 Sept. |  Partly cloudy | 16° /3° | 0 mm | 0 cm | |
| 4 Sept. |  Patchy light rain with thunder | 20° /7° | 0.4 mm | 0 cm | |
| 5 Sept. | Light rain shower | 8° /1° | 20.5 mm | 0 cm | |
| 6 Sept. |  Sunny | 19° /8° | 0 mm | 0 cm | |
| 7 Sept. | Sunny | 19° /10° | 2.1 mm | 0 cm | |
| 8 Sept. | Sunny | 20° /10° | 3.1 mm | 0 cm | |
| 9 Sept. | Light rain shower | 13° /8° | 12.2 mm | 0 cm | |
| 10 Sept. | Light rain shower | 14° /6° | 8.5 mm | 0 cm | |
| 11 Sept. | Patchy rain possible | 9° /4° | 0.7 mm | 0 cm | |
| 12 Sept. | Sunny | 10° /3° | 4.8 mm | 0 cm | |
| 13 Sept. |  Mist | 9° /2° | 3.8 mm | 0 cm | |
| 14 Sept. | Patchy rain possible | 10° /3° | 0.1 mm | 0 cm | |
| 15 Sept. | Sunny | 11° /3° | 0 mm | 0 cm | |
| 16 Sept. | Sunny | 15° /4° | 0 mm | 0 cm | |
| 17 Sept. | Light rain shower | 7° /1° | 9 mm | 0.2 cm | |
| 18 Sept. |  Moderate or heavy snow showers | 1° /0° | 6.3 mm | 4.6 cm | |
| 19 Sept. |  Light freezing rain | 5° /-1° | 2 mm | 0 cm | |
| 20 Sept. | Sunny | 21° /10° | 0 mm | 0 cm | |
| 21 Sept. | Sunny | 19° /9° | 0 mm | 0 cm | |
| 22 Sept. |  Moderate rain | 10° /5° | 21.5 mm | 0 cm | |
| 23 Sept. | Patchy light rain with thunder | 13° /5° | 4.6 mm | 0 cm | |
| 24 Sept. |  Light snow showers | 6° /1° | 17.5 mm | 2.4 cm | |
| 25 Sept. | Patchy light rain with thunder | 5° /2° | 5.8 mm | 2.8 cm | |
| 26 Sept. | Patchy light rain with thunder | 8° /2° | 1.5 mm | 0.1 cm | |
| 27 Sept. | Patchy light rain with thunder | 5° /1° | 3.2 mm | 0.4 cm | |
| 28 Sept. | Patchy rain possible | 10° /0° | 0 mm | 0 cm | |
| 29 Sept. | Patchy rain possible | 10° /1° | 0 mm | 0 cm | |
| 30 Sept. | Patchy rain possible | 8° /1° | 0 mm | 0 cm | |
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Important Notice
Our weather forecast for Arosa in September is based on the analysis of historical data rather than real-time forecast models. While this provides a general overview, weather conditions can change. We recommend that you check the Arosa forecast closer to your planned date for the most up-to-date weather information.
Change Month
Arosa in September - FAQ
What are the expected maximum and minimum temperatures in Arosa during September?
Prepare for cooler days with highs just around 13° and colder nights, dipping below 4°.
How much rainfall should be expected in Arosa during September?
Significant rainfall exceeding 130.6 mm is expected in Arosa during September, occurring over more than 13 days. Preparing for wet conditions is recommended in your planning.
Will it snow in Arosa in September 2026?
Arosa experiences an average snowfall of 5.6 cm during September, occurring over 3 days.
What are the typical wind conditions in Arosa during September?
The average wind speed in Arosa during September is 9 km/h, suggesting breezy to windy conditions, depending on your activities.
Arosa snow forecast September 2026
Track daily snowfall levels and discover Arosa’s snowy potential this September ❄️
On average, Arosa sees 3 snowy days during September, with approximately 5.6 cm of total snowfall.
September rainfall patterns in Arosa
Explore the daily rainfall trends and prepare for Arosas September weather 💧
Typically, Arosa has 13 rainy days in September with a total of 130.6 mm of rainfall.
UV exposure in Arosa during September
Stay informed about UV levels for safe outdoor activities throughout the month of September ☀️
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