About Val-d'Illiez
Val-d'Illiez is a Swiss municipality located in the canton of Valais (VS), at 46.194° latitude and 6.898° longitude. The municipality is part of the Valais Alps, dry continental climate, among the sunniest in Switzerland. Also known as Val-d'Illiez, Val-d'Illiez benefits from precise weather monitoring with hourly and 15-day forecasts.
Climate of Val-d'Illiez
The climate in Val-d'Illiez 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 Val-d'Illiez and neighboring municipalities.
On this page you will find the detailed weather forecast for Val-d'Illiez: current temperature, 48-hour hourly forecast, 15-day forecast, air quality, UV index, wind, precipitation and weather alerts. Updated hourly.
Climate of Val-d'Illiez: 1991–2020 normals
In Val-d'Illiez (987 m), the mean annual temperature is 8.0 °C. The warmest month is July (16.8 °C on average) and the coldest January (−0.8 °C). About 1134 mm of precipitation falls per year, peaking in July (136 mm) with a minimum in February (66 mm). The mean monthly maximum reaches 28.2 °C and the absolute minimum −10.1 °C.
Mean monthly precipitation (mm) — bar height relative to the wettest month.
| Month | Mean T | Abs. max | Abs. min | Precip. (mm) |
|---|---|---|---|---|
| Jan | −0.8 °C | 9.8 °C | −10.1 °C | 78 |
| Feb | 0.3 °C | 11.6 °C | −8.7 °C | 66 |
| Mar | 4.1 °C | 16.1 °C | −5.8 °C | 72 |
| Apr | 7.6 °C | 19.8 °C | −3.1 °C | 75 |
| May | 11.5 °C | 24.0 °C | 1.1 °C | 108 |
| Jun | 15.1 °C | 27.2 °C | 4.5 °C | 111 |
| Jul | 16.8 °C | 28.2 °C | 7.0 °C | 136 |
| Aug | 16.4 °C | 27.8 °C | 6.2 °C | 127 |
| Sep | 12.5 °C | 23.1 °C | 3.1 °C | 92 |
| Oct | 8.7 °C | 19.7 °C | −1.0 °C | 89 |
| Nov | 3.4 °C | 15.5 °C | −5.8 °C | 86 |
| Dec | 0.0 °C | 10.8 °C | −9.0 °C | 92 |
| Year | 8.0 °C | 28.2 °C | −10.1 °C | 1134 |
Source: MeteoSwiss open data (1991–2020 normals) — stations Evionnaz (10 km, 482 m), Aigle (15 km, 381 m), Les Diablerets (28 km, 2964 m), adjusted to the elevation of Val-d'Illiez (987 m) using a 0.55 °C/100 m lapse rate. Indicative, rounded values.
Nearby cities
Check the weather of cities near Val-d'Illiez:
- Weather Troistorrents
- Weather Champéry
- Weather Vérossaz
- Weather Monthey
- Weather Evionnaz
- Weather Collombey-Muraz
- Weather Massongex
- Weather Saint-Maurice
- Weather Bex
- Weather Lavey-Morcles
- Weather Vernayaz
- Weather Collonges
→ Nearby cities · Canton Valais
⛷️ Ski resorts in this municipality: Les Crosets, Champoussin
Frequently asked questions about weather in Val-d'Illiez
What is the weather in Val-d'Illiez today?
At the top of the page you will find the current temperature, precipitation and wind in Val-d'Illiez, updated in real time.
What is the 15-day forecast for Val-d'Illiez?
The "15-day forecast" section shows min/max temperatures, precipitation and wind expected for the next 15 days in Val-d'Illiez.
Will it rain tomorrow in Val-d'Illiez?
Check the 48-hour hourly forecast to see exactly when precipitation is expected in Val-d'Illiez.
What is the air quality in Val-d'Illiez?
The air quality section displays the AQI index and PM2.5, PM10 and ozone concentrations measured near Val-d'Illiez.
Are there weather alerts for Val-d'Illiez?
Weather alerts (storms, high winds, extreme temperatures) are shown as a banner at the top of the page when active.
At what altitude is Val-d'Illiez located?
Val-d'Illiez sits at around 987 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 Val-d'Illiez?
The warmest month in Val-d'Illiez is July, averaging 16.8 °C (1991–2020 normal). The coldest is January at −0.8 °C.
How much does it rain in Val-d'Illiez per year?
Val-d'Illiez receives about 1134 mm of precipitation a year. The wettest month is July (136 mm), the driest February (66 mm).
When is the best time to visit Val-d'Illiez?
For warmth and sunshine: July (16.8 °C on average, — h of sun). The coldest month is January (−0.8 °C). Check the 15-day forecast above for your dates.