Valais (Zermatt)
September
Weather in Valais for September 2026
Your guide to Valais weather in September - trends and predictions
In general, the average temperature in Valais at the beginning of September is 11.4 °C. As the month progressed, temperatures tended to significantly cool down, reaching an average of 6 °C by the end of September.
Valais in September brings notable rainfall, with an average of 18 rainy days and a total precipitation of 502.5 mm.
Is September a good time to visit Valais? check out the best time to travel to Valais page.
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Temperatures
Rain 🌧️
More
12
Dry days
18
Rainy days
0
Snow days
13°/-2°
Temperatures
10 km/h
Avg max wind
79 %
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° /3° | 12.4 mm | 0 cm | |
| 2 Sept. |  Patchy light rain with thunder | 10° /3° | 3.2 mm | 0 cm | |
| 3 Sept. |  Moderate rain at times | 11° /3° | 2.1 mm | 0 cm | |
| 4 Sept. | Moderate rain at times | 12° /4° | 4.5 mm | 0 cm | |
| 5 Sept. | Moderate rain at times | 10° /3° | 13.5 mm | 0 cm | |
| 6 Sept. | Patchy rain possible | 13° /4° | 1.8 mm | 0 cm | |
| 7 Sept. |  Partly cloudy | 13° /3° | 2.4 mm | 0 cm | |
| 8 Sept. | Patchy rain possible | 12° /5° | 3.8 mm | 0 cm | |
| 9 Sept. | Patchy rain possible | 9° /3° | 5.7 mm | 0 cm | |
| 10 Sept. | Patchy rain possible | 10° /3° | 2.5 mm | 0 cm | |
| 11 Sept. | Patchy rain possible | 11° /2° | 2.3 mm | 0 cm | |
| 12 Sept. | Patchy rain possible | 10° /1° | 1 mm | 0.4 cm | |
| 13 Sept. | Patchy rain possible | 8° /1° | 9 mm | 0.7 cm | |
| 14 Sept. | Patchy rain possible | 8° /1° | 1.9 mm | 0 cm | |
| 15 Sept. |  Heavy rain at times | 10° /3° | 5 mm | 0 cm | |
| 16 Sept. | Moderate or heavy rain shower | 8° /2° | 4 mm | 0 cm | |
| 17 Sept. |  Overcast | 9° /0° | 1.1 mm | 0 cm | |
| 18 Sept. | Patchy rain possible | 9° /1° | 4.8 mm | 0 cm | |
| 19 Sept. | Moderate or heavy rain shower | 8° /0° | 11.2 mm | 0 cm | |
| 20 Sept. | Moderate rain at times | 8° /0° | 1.7 mm | 0 cm | |
| 21 Sept. | Partly cloudy | 7° /1° | 6.2 mm | 0 cm | |
| 22 Sept. | Overcast | 7° /0° | 13.1 mm | 0 cm | |
| 23 Sept. |  Sunny | 6° /0° | 5.8 mm | 0.1 cm | |
| 24 Sept. | Sunny | 6° /-2° | 3.6 mm | 0 cm | |
| 25 Sept. | Moderate rain at times | 6° /-1° | 2.4 mm | 0.1 cm | |
| 26 Sept. | Moderate rain at times | 6° /0° | 6.7 mm | 1.6 cm | |
| 27 Sept. |  Cloudy | 6° /-1° | 2.1 mm | 0.6 cm | |
| 28 Sept. | Patchy rain possible | 6° /-2° | 1.6 mm | 0.3 cm | |
| 29 Sept. | Patchy rain possible | 6° /-2° | 1.6 mm | 0 cm | |
| 30 Sept. | Partly cloudy | 6° /-1° | 2.6 mm | 0.2 cm | |
| Next | |||||
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.
Change Month
Valais weather in September vs August vs October
Compare September weather in Valais with the previous and following months. See how temperature, rainfall, wind, and other conditions change throughout the year to help you plan your visit.
| August | September | October | |
|---|---|---|---|
| Weather | Patchy rain possible | Patchy rain possible | Patchy rain possible |
| Temperatures | 18°/3° | 13°/-2° | 10°/-5° |
| Rainfall | 759 mm | 503 mm | 660 mm |
| Snowfall | 31 cm | 10 cm | 37 cm |
| Wind | 9.7 km/h | 9.9 km/h | 10.6 km/h |
| Humidity | 73% | 79% | 75% |
| Rainy days | 27 days | 18 days | 13 days |
| Snow days | 0 days | 0 days | 0 days |
| Dry days | 4 days | 12 days | 18 days |
Planning a trip to Valais? Discover the best time to visit
Valais in September - FAQ
What are the expected maximum and minimum temperatures in Valais during September?
Prepare for cooler days with highs just around 13° and colder nights, dipping below -2°.
How much rainfall should be expected in Valais during September?
Significant rainfall exceeding 502.5 mm is expected in Valais during September, occurring over more than 18 days. Preparing for wet conditions is recommended in your planning.
Will it snow in Valais in September 2026?
Valais typically sees 10.3 cm of snowfall during September.
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.
What to pack to Valais in September?
As you prepare for your trip to Valais in September, it's important to consider the typical weather patterns for the time of year. Below is a carefully tailored packing list to ensure that your time in Valais, during September, is comfortable and enjoyable, regardless of the weather conditions.
- Clothing
- Warm Clothing: Sweaters, hoodies, long pants
- Rain Gear: Lightweight, waterproof clothing
- Thermal Wear: Base layers for cold destinations
- All-Weather Jacket: Waterproof and breathable
- Footwear
- Waterproof Shoes
- Insulated Boots: For snowy and extremely cold temperatures
- Accessories
- Scarves: To protect you from the cold wind
- Gloves/Mittens: Essential for cold weather
- Warm Hats: Warm hats for insulation in cold weather
- Umbrellas/Raincoats: For rainy days
Valais snow forecast September 2026
Track daily snowfall levels and discover Valais’s snowy potential this September ❄️
September rainfall patterns in Valais
Explore the daily rainfall trends and prepare for Valaiss September weather 💧
Typically, Valais has 18 rainy days in September with a total of 502.5 mm of rainfall.
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