About Vionnaz
Vionnaz is a Swiss municipality located in the canton of Valais (VS), at 46.308° latitude and 6.901° longitude. The municipality is part of the Valais Alps, dry continental climate, among the sunniest in Switzerland. Also known as Vionnaz, Vionnaz benefits from precise weather monitoring with hourly and 15-day forecasts.
Climate of Vionnaz
The climate in Vionnaz is characteristic of the Valais Alps, dry continental climate, among the sunniest in Switzerland. Temperatures, precipitation and wind conditions vary throughout the year with local features linked to altitude and surrounding terrain. Our data comes from official weather stations and real-time Netatmo sensors for Vionnaz and neighboring municipalities.
On this page you will find the detailed weather forecast for Vionnaz: current temperature, 48-hour hourly forecast, 15-day forecast, air quality, UV index, wind, precipitation and weather alerts. Updated hourly.
Climate of Vionnaz: 1991–2020 normals
In Vionnaz (421 m), the mean annual temperature is 10.3 °C. The warmest month is July (19.4 °C on average) and the coldest January (1.5 °C). About 994 mm of precipitation falls per year, peaking in July (119 mm) with a minimum in February (58 mm). The sun shines for about 1846 hours a year, mostly in July (224 h). On average there are 77 frost days and 6 hot days (≥ 30 °C) per year. The mean monthly maximum reaches 30.5 °C and the absolute minimum −9.3 °C.
Mean monthly precipitation (mm) — bar height relative to the wettest month.
| Month | Mean T | Abs. max | Abs. min | Precip. (mm) | Sunshine (h) | Frost days | Summer days |
|---|---|---|---|---|---|---|---|
| Jan | 1.5 °C | 12.2 °C | −9.3 °C | 68 | 91 | 20 | 0 |
| Feb | 2.5 °C | 13.4 °C | −7.3 °C | 58 | 111 | 17 | 0 |
| Mar | 6.4 °C | 18.1 °C | −3.6 °C | 63 | 160 | 9 | 0 |
| Apr | 10.2 °C | 22.6 °C | −1.1 °C | 66 | 174 | 2 | 0 |
| May | 14.2 °C | 26.5 °C | 3.4 °C | 95 | 181 | 0 | 3 |
| Jun | 17.7 °C | 29.3 °C | 6.6 °C | 97 | 206 | 0 | 11 |
| Jul | 19.4 °C | 30.5 °C | 8.9 °C | 119 | 224 | 0 | 18 |
| Aug | 18.9 °C | 29.9 °C | 8.3 °C | 112 | 213 | 0 | 15 |
| Sep | 14.8 °C | 25.4 °C | 4.8 °C | 81 | 177 | 0 | 3 |
| Oct | 10.6 °C | 21.4 °C | 0.2 °C | 78 | 139 | 1 | 0 |
| Nov | 5.5 °C | 17.2 °C | −4.2 °C | 76 | 92 | 9 | 0 |
| Dec | 2.3 °C | 13.0 °C | −7.7 °C | 81 | 78 | 18 | 0 |
| Year | 10.3 °C | 30.5 °C | −9.3 °C | 994 | 1846 | 77 | 51 |
Source: MeteoSwiss open data (1991–2020 normals) — stations Aigle (3 km, 381 m), Evionnaz (17 km, 482 m), Les Diablerets (23 km, 2964 m), adjusted to the elevation of Vionnaz (421 m) using a 0.55 °C/100 m lapse rate. Indicative, rounded values.
Nearby cities
Check the weather of cities near Vionnaz:
- Weather Vouvry
- Weather Yvorne
- Weather Chessel
- Weather Aigle
- Weather Ollon
- Weather Collombey-Muraz
- Weather Roche (VD)
- Weather Rennaz
- Weather Noville
- Weather Port-Valais
- Weather Leysin
- Weather Corbeyrier
→ Nearby cities · Canton Valais
⛷️ Ski resorts in this municipality: Torgon
Frequently asked questions about weather in Vionnaz
What is the weather in Vionnaz today?
At the top of the page you will find the current temperature, precipitation and wind in Vionnaz, updated in real time.
What is the 15-day forecast for Vionnaz?
The "15-day forecast" section shows min/max temperatures, precipitation and wind expected for the next 15 days in Vionnaz.
Will it rain tomorrow in Vionnaz?
Check the 48-hour hourly forecast to see exactly when precipitation is expected in Vionnaz.
What is the air quality in Vionnaz?
The air quality section displays the AQI index and PM2.5, PM10 and ozone concentrations measured near Vionnaz.
Are there weather alerts for Vionnaz?
Weather alerts (storms, high winds, extreme temperatures) are shown as a banner at the top of the page when active.
At what altitude is Vionnaz located?
Vionnaz sits at around 421 m above sea level in the canton of Valais. This elevation directly affects the temperatures, rain-snow line and snow cover shown in the forecasts.
What is the warmest month in Vionnaz?
The warmest month in Vionnaz is July, averaging 19.4 °C (1991–2020 normal). The coldest is January at 1.5 °C.
How much does it rain in Vionnaz per year?
Vionnaz receives about 994 mm of precipitation a year. The wettest month is July (119 mm), the driest February (58 mm).
When is the best time to visit Vionnaz?
For warmth and sunshine: July (19.4 °C on average, 224 h of sun). The coldest month is January (1.5 °C). Check the 15-day forecast above for your dates.