Sion weather in July (Canton of Valais, Switzerland)

What can you expect from the weather in Sion during July? This guide provides all the weather details you need.

In July, the weather in Sion generally has pleasant temperatures and heavy rainfall. July falls within the summer season. Throughout the daytime, temperatures often hover around 19°C (show in °F). However, as the sun sets and evening approaches, there's a noticeable cool-down, with temperatures gently dropping to a more temperate 8°C. On average, it has the peak temperatures of the year.

Sion in July usually receives heavy rainfall, averaging around 162 mm (show in inches) for the month. When we look at the climate data from the last 30 years, we can expect around 16 days of rain.

The weather is predominantly sunny, with an estimated total of around 270 hours of sunshine. This amount of sunlight does not only brightens the days but also contributes to a cheerful ambiance in the area during this month.

So this is a great month to visit if you prefer dry weather with pleasant temperatures. July and August typically offer the most favorable weather. In contrast, January, February, March, April, May, October, November and December tend to have less favorable conditions.

For an in-depth look at the yearly weather and climate conditions, visit our specialized Sion climate page with graphs.


Sion, monthly averages in July

Show in Fahrenheit
Min Temperature 7.5°C  
Max Temperature 18.8°C  
Chance of Rain 54%  
Precipitation 162 mm  
Rainy days 16 days  
Humidity 63%  
Windspeed 7 km/h  
Sunshine 270 hours  
Percentage Sunshine 65%  

Where to go in Switzerland in July

Find out more about the weather in Switzerland in July and which places have the best weather conditions in this month.

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Legend perfect weather pleasant tolerable unpleasant poor
Perfect weather is subjective. On this map perfect weather has been defined with temperatures between 20-29ºC / 68-84ºF and not too much precipitation (less than 90mm / 3.5inches a month).

So, what should you wear in Sion in July?

​ For visitors traveling to Sion, we recommend wearing layers. So maybe a skirt, t-shirt, shorts for during the day and jeans and a warm jacket for some days and evenings. Bring a rain jacket in case it rains during your stay. Plan on layering your clothes. ​ ​

What To Do

We rated the following activities from 1 (least suitable) to 10 (best) to do in July.


Interested in more climate information?

Weather and Climate provides you with all the information you need about the climate in Sion.

Our site offers climate and forecast data for every country in the world. Are you going to Switzerland? On this website you can find historical weather averages for many cities in Switzerland. Not sure yet where to go? We now have a tool which recommends destinations that suit your ideal climate conditions. Find out where to go with our weather planner.