Valais (Zermatt)
September
Weather in Valais for September 2026
Your guide to Valais weather in September - trends and predictions
Giallo Temporali Allerta - See hour by hour.
With an average of 2 snowy days, Valais usually enjoys a light touch of snow in September.
According to Valais snow forecast for September 2026, no snow is expected until the end of the month.So far, September 2026 in Valais shows a warmer trend than usual by 2.3 °C.
Expect cooler weather in the next days in Valais with the forecast suggesting a temperature of 8.9 °C, lower than the historical average.
In general, the average temperature in Valais at the beginning of September is 11.7 °C. As the month progressed, temperatures tended to noticeably cool down, reaching an average of 9.6 °C by the end of September.
Valais in September brings notable rainfall, with an average of 16 rainy days and a total precipitation of 139.6 mm.
Official Weather Alert ⚠️
Snow Forecast ❄️
Temperatures
Rain 🌧️
12
Dry days
16
Rainy days
2
Snow days
8°/2°
Temperatures
10 km/h
Avg max wind
78 %
Avg humidity
Valais Weather September
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What’s the Weather Like in Valais This September?
Discover the average temperatures and weather trends across Valais’s cities this September.
Temperatures trend during September in Valais
See the weather trend as well as the moving average line
September weather in Valais day by day
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| Date | Weather | Temperatures | Rain | Snow | More |
|---|---|---|---|---|---|
| 1 Sept. |  Patchy rain possible | 11° /2° | 10.4 mm | 0 cm | |
| 2 Sept. |  Patchy light rain with thunder | 10° /3° | 2.6 mm | 0 cm | |
| 3 Sept. |  Moderate rain at times | 12° /3° | 1.7 mm | 0 cm | |
| 4 Sept. | Moderate rain at times | 12° /4° | 3.7 mm | 0 cm | |
| 5 Sept. | Moderate rain at times | 11° /3° | 11.3 mm | 0 cm | |
| 6 Sept. | Patchy rain possible | 13° /4° | 1.6 mm | 0 cm | |
| 7 Sept. |  Partly cloudy | 13° /4° | 2.3 mm | 0 cm | |
| 8 Sept. | Patchy rain possible | 12° /4° | 3.7 mm | 0 cm | |
| 9 Sept. | Patchy rain possible | 9° /3° | 5.4 mm | 0 cm | |
| 10 Sept. | Patchy rain possible | 10° /3° | 2.8 mm | 0 cm | |
| 11 Sept. | Patchy rain possible | 11° /2° | 1.9 mm | 0 cm | |
| 12 Sept. | Patchy rain possible | 10° /1° | 0.8 mm | 0.3 cm | |
| 13 Sept. | Patchy rain possible | 9° /1° | 7.5 mm | 0.6 cm | |
| 14 Sept. | Patchy rain possible | 9° /2° | 1.6 mm | 0 cm | |
| 15 Sept. |  Heavy rain at times | 11° /3° | 4.1 mm | 0 cm | |
| 16 Sept. | Moderate or heavy rain shower | 9° /3° | 3.7 mm | 0 cm | |
| 17 Sept. |  Overcast | 9° /1° | 0.9 mm | 0 cm | |
| 18 Sept. | Patchy rain possible | 9° /1° | 4 mm | 0 cm | |
| 19 Sept. | Moderate or heavy rain shower | 9° /0° | 9.3 mm | 0 cm | |
| 20 Sept. | Moderate rain at times | 9° /1° | 1.4 mm | 0 cm | |
| 21 Sept. | Partly cloudy | 7° /1° | 6.2 mm | 0 cm | |
| 22 Sept. |  Sunny | 11° /2° | 0 mm | 0 cm | |
| 23 Sept. | Sunny | 10° /1° | 0 mm | 0 cm | |
| 24 Sept. | Sunny | 10° /1° | 0 mm | 0 cm | |
| 25 Sept. | Sunny | 10° /2° | 0 mm | 0 cm | |
| 26 Sept. | Sunny | 12° /2° | 0 mm | 0 cm | |
| 27 Sept. | Sunny | 12° /3° | 0.5 mm | 0 cm | |
| 28 Sept. | Overcast | 10° /2° | 0.3 mm | 0 cm | |
| 29 Sept. | Patchy rain possible | 7° /2° | 0.6 mm | 0 cm | |
| 30 Sept. | Patchy rain possible | 6° /1° | 1.1 mm | 0 cm | |
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Important Notice
Our weather forecast for Valais 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 Valais forecast closer to your planned date for the most up-to-date weather information.
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Valais in September - FAQ
What are the expected maximum and minimum temperatures in Valais during September?
Prepare for cooler days with highs just around 8° and colder nights, dipping below 2°.
How much rainfall should be expected in Valais during September?
Significant rainfall exceeding 139.6 mm is expected in Valais during September, occurring over more than 16 days. Preparing for wet conditions is recommended in your planning.
Will it snow in Valais in September 2026?
Valais experiences an average snowfall of 4 cm during September, occurring over 2 days.
What are the typical wind conditions in Valais during September?
The average wind speed in Valais during September is 10 km/h, suggesting breezy to windy conditions, depending on your activities.
Valais snow forecast September 2026
Track daily snowfall levels and discover Valais’s snowy potential this September ❄️
On average, Valais sees 2 snowy days during September, with approximately 4 cm of total snowfall.
September rainfall patterns in Valais
Explore the daily rainfall trends and prepare for Valaiss September weather 💧
Typically, Valais has 16 rainy days in September with a total of 139.6 mm of rainfall.
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