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Weather in Valais for September 2025

Your guide to Valais weather in September - trends and predictions

    Snow Forecast ❄️

  • Snowfall in Valais during September is quite rare, with fewer than 2 snowy days on average.
    According to Valais snow forecast for September 2025, 4 snowy days are expected until the end of the month. The closest date with snow is Tuesday, 23 September.

    • Temperatures

  • Until now, September 2025 in Valais is cooler than usual, with temperatures averaging 7.5 °C, this is -3 °C below the typical seasonal average.

  • The forecast for the next days in Valais predicts a temperature of 5 °C, which is cooler than the historical average.

  • 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 0.4 °C by the end of September.

    • Rain 🌧️

  • Valais in September brings notable rainfall, with an average of 18 rainy days and a total precipitation of 502.5 mm.

Average dry days
12
Dry days
Average rainy days
18
Rainy days
Average snowy days
0
Snow days
Average temperatures
13°/-2°
Temperatures
Average wind speed
10 km/h
Avg max wind
Average humidity
79 %
Avg humidity

Valais Weather September

Move between months or click on a day
August
October
Mon.Tue.Wed.Thu.Fri.Sat.Sun.
1
Patchy rain possible
11°
2
Patchy light rain with thunder
10°
3
Moderate rain at times
11°
4
Moderate rain at times
12°
5
Moderate rain at times
10°
6
Patchy rain possible
13°
7
Partly cloudy
13°
8
Patchy rain possible
12°
9
Patchy rain possible
9°
10
Patchy rain possible
10°
11
Patchy rain possible
11°
12
Patchy rain possible
10°
13
Patchy rain possible
8°
14
Patchy rain possible
8°
15
Heavy rain at times
10°
16
Moderate or heavy rain shower
8°
17
Sunny
8°
18
Patchy rain possible
15°
19
Patchy rain possible
15°
20
Patchy rain possible
13°
21
Patchy rain possible
9°
22
Moderate rain
5°
23
Patchy rain possible
4°
24
Light snow
-3°
25
Moderate or heavy snow with thunder
-4°
26
Mist
-2°
27
Cloudy
-1°
28
Sunny
2°
29
Sunny
4°
30
Partly cloudy
7°

Temperatures trend during September in Valais

See the weather trend as well as the moving average line

September weather in Valais day by day

Click on a date for more information
August October
Date Weather Temperatures Rain Snow More
1 Sept. Patchy rain possible
Patchy rain possible
 11° /3° 12.4 mm 0 cm
2 Sept. Patchy light rain with thunder
Patchy light rain with thunder
 10° /3° 3.2 mm 0 cm
3 Sept. Moderate rain at times
Moderate rain at times
 11° /3° 2.1 mm 0 cm
4 Sept. Moderate rain at times
Moderate rain at times
 12° /4° 4.5 mm 0 cm
5 Sept. Moderate rain at times
Moderate rain at times
 10° /3° 13.5 mm 0 cm
6 Sept. Patchy rain possible
Patchy rain possible
 13° /4° 1.8 mm 0 cm
7 Sept. Partly cloudy
Partly cloudy
 13° /3° 2.4 mm 0 cm
8 Sept. Patchy rain possible
Patchy rain possible
 12° /5° 3.8 mm 0 cm
9 Sept. Patchy rain possible
Patchy rain possible
 9° /3° 5.7 mm 0 cm
10 Sept. Patchy rain possible
Patchy rain possible
 10° /3° 2.5 mm 0 cm
11 Sept. Patchy rain possible
Patchy rain possible
 11° /2° 2.3 mm 0 cm
12 Sept. Patchy rain possible
Patchy rain possible
 10° /1° 1 mm 0.4 cm
13 Sept. Patchy rain possible
Patchy rain possible
 8° /1° 9 mm 0.7 cm
14 Sept. Patchy rain possible
Patchy rain possible
 8° /1° 1.9 mm 0 cm
15 Sept. Heavy rain at times
Heavy rain at times
 10° /3° 5 mm 0 cm
16 Sept. Moderate or heavy rain shower
Moderate or heavy rain shower
 8° /3° 5 mm 0 cm
17 Sept. Sunny
Sunny
 8° /1° 0 mm 0 cm
18 Sept. Patchy rain possible
Patchy rain possible
 15° /5° 0.2 mm 0 cm
19 Sept. Patchy rain possible
Patchy rain possible
 15° /5° 0.6 mm 0 cm
20 Sept. Patchy rain possible
Patchy rain possible
 13° /5° 0.2 mm 0 cm
21 Sept. Patchy rain possible
Patchy rain possible
 9° /5° 1.2 mm 0 cm
22 Sept. Moderate rain
Moderate rain
 5° /3° 9.7 mm 0 cm
23 Sept. Patchy rain possible
Patchy rain possible
 4° /-1° 4.6 mm 1.7 cm
24 Sept. Light snow
Light snow
 -3° /-7° 3.8 mm 2.7 cm
25 Sept. Moderate or heavy snow with thunder
Moderate or heavy snow with thunder
 -4° /-7° 3.1 mm 2.2 cm
26 Sept. Mist
Mist
 -2° /-9° 0.2 mm 0.1 cm
27 Sept. Cloudy
Cloudy
 -1° /-8° 0.1 mm 0 cm
28 Sept. Sunny
Sunny
 2° /-6° 0 mm 0 cm
29 Sept. Sunny
Sunny
 4° /-4° 0 mm 0 cm
30 Sept. Partly cloudy
Partly cloudy
 7° /0° 3.2 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.
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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 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 2025?
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.

Valais snow forecast September 2025

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 💧
Provinces in Valais
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Visp District
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Zermatt
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Location coordinates Where is Valais?

Get accurate weather forecasts for Valais, located at latitude 46.02 and longitude 7.749. Stay updated with localized weather information tailored for Valais.

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