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.

meteo-ch.ch Search a municipality…

Home › Valais › Vionnaz

Weather in Vionnaz

Valais, 421 m · continuously updated

–^°C

– –

Wind: –
Humidity: –
Rain ahead: –
Sunset: –

Rhône: 8.7 °C at Porte du Scex river temperature · FOEN gauge 4.7 km away · 27.09. 00h

Temperature · last 4 and next 28 hours

Vionnaz weather: the next 24 hours

Updated hourly.

Vionnaz weather hour by hour (48 h)

Vionnaz 15-day forecast

Two-week trend.

Vionnaz weekend weather Rain radar

Sun and golden hours

Sunrise –, golden light until –

Sunset –, golden light from –

–

Air quality

–

European index, measured continuously.

UV index

–

Daily maximum — protection advised from 3.

Freezing level

–

Snow settles about 300 m below it.

Around Vionnaz

Neighbouring municipalities, as the crow flies.

Vouvry3 km Yvorne4 km Chessel5 km Aigle5 km Ollon6 km Collombey-Muraz6 km Roche (VD)6 km Rennaz8 km

7-day forecast for Vionnaz

Today (Sunday 27 Sep) in Vionnaz: partly cloudy, 16 to 24 °C, precipitation 0.0 mm (0 %), wind up to 9 km/h. Tomorrow: overcast, 16 to 24 °C.

Day	Weather	Min	Max	Precip.	Wind
Today	partly cloudy	16 °C	24 °C	0.0 mm	9 km/h
Tomorrow	overcast	16 °C	24 °C	0.0 mm	9 km/h
Tue 29 Sep	light rain	16 °C	23 °C	0.1 mm	7 km/h
Wed 30 Sep	light rain	17 °C	21 °C	0.9 mm	5 km/h
Thu 1 Oct	light rain	16 °C	19 °C	8.3 mm	6 km/h
Fri 2 Oct	overcast	17 °C	22 °C	0.0 mm	9 km/h
Sat 3 Oct	overcast	16 °C	22 °C	0.0 mm	7 km/h

Forecast updated on 27.09.2026 at 04:37 (Open-Meteo model, elevation 421 m). The interactive block at the top refreshes hourly and covers 16 days.

No rain expected in Vionnaz today or tomorrow. The 15-minute detail for the next two hours is shown on demand.

Hourly weather in Vionnaz

Sunday 27 Sep in Vionnaz, hour by hour: sunny in the morning, sunny in the afternoon, sunny in the evening. Low 16 °C around 07:00, high 24 °C around 16:00. No rainy hour.

Show the 24-hour table

Time	Weather	Temp.	Wind
00:00	sunny	18 °C	8 km/h
01:00	sunny	18 °C	8 km/h
02:00	sunny	17 °C	7 km/h
03:00	sunny	17 °C	6 km/h
04:00	sunny	17 °C	5 km/h
05:00	sunny	17 °C	3 km/h
06:00	sunny	17 °C	3 km/h
07:00	sunny	16 °C	3 km/h
08:00	sunny	16 °C	3 km/h
09:00	sunny	17 °C	1 km/h
10:00	sunny	18 °C	2 km/h
11:00	sunny	20 °C	4 km/h
12:00	sunny	21 °C	6 km/h
13:00	mostly sunny	22 °C	6 km/h
14:00	sunny	23 °C	5 km/h
15:00	sunny	24 °C	3 km/h
16:00	sunny	24 °C	2 km/h
17:00	sunny	24 °C	1 km/h
18:00	sunny	23 °C	1 km/h
19:00	sunny	21 °C	3 km/h
20:00	partly cloudy	20 °C	5 km/h
21:00	sunny	20 °C	8 km/h
22:00	sunny	19 °C	7 km/h
23:00	mostly sunny	19 °C	7 km/h

Hourly forecast issued 27.09.2026 for Vionnaz (421 m), Swiss local time, Open-Meteo model. The interactive block at the top of the page covers 16 days and refreshes every hour.

Vionnaz weather tomorrow

Tomorrow, Monday 28 Sep, in Vionnaz: overcast, 16 to 24 °C, wind up to 9 km/h. No precipitation expected.

Vionnaz weekend weather

This weekend in Vionnaz: Saturday overcast, 16 to 22 °C; Sunday partly cloudy, 16 to 24 °C.

Will it rain in Vionnaz this week?

Yes: 1 day with precipitation is expected in Vionnaz over the next 7 days, 9.3 mm in total. Wettest day: Thursday 1 Oct (8.3 mm).

The best day to go out in Vionnaz

The best day of the next 7 in Vionnaz: Sunday 27 Sep, partly cloudy, up to 24 °C.

The last 7 days in Vionnaz

From 20 Sep to 26 Sep: 17.8 °C on average, 3.0 °C above the September normal (14.8 °C), 0 mm of precipitation (7-day normal: 19 mm). Warmest day: saturday 26 Sep (23 °C); coolest night: wednesday 23 Sep (11 °C).

Day	Min	Max
Sun 20 Sep	14 °C	23 °C
Mon 21 Sep	14 °C	23 °C
Tue 22 Sep	12 °C	22 °C
Wed 23 Sep	11 °C	22 °C
Thu 24 Sep	16 °C	22 °C
Fri 25 Sep	12 °C	21 °C
Sat 26 Sep	14 °C	23 °C

Open-Meteo analyses of the last 7 days (models and assimilated observations), MeteoSwiss 1991–2020 normals. Updated nightly.

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.

10.3 °CMean annual temperature

994 mmPrecipitation per year

1846 hSunshine hours per year

77Frost days per year

51Summer days (≥ 25 °C)

JFMAMJJASOND

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.