Sion weather in August (Canton of Valais, Switzerland)

What should you pack for a trip to Sion in August? Curious if the timing is right for your trip? Our page offers an in-depth look at the monthly weather conditions.

Temperatures

In August, the weather in Sion generally includes pleasant temperatures and high rainfall. Experience the summer season in August. During the day, temperatures can climb to about 19°C. At night, they may fall to a cooler 7°C.

Precipitation

Sion in August usually receives high rainfall, averaging around 153 mm for the month. Historically, approximately 17 days this month are expected to have rain.

Average sunshine

Enjoy a sunny month with about 248 hours of sunshine, providing a cheerful and lively atmosphere.

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

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

 

Sion, monthly averages in August

Min Temperature 7°C  

Max Temperature 19°C  

Chance of Rain 56%  

Precipitation 153 mm  

Rainy days 17 days  

Humidity 67%  

Windspeed 7 km/h  

Sunshine 248 hours  

Percentage Sunshine 65%  

Where to go in Switzerland in August

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

Weather conditions Weather

Temperatures

Precipitation

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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°C and 29°C and not too much precipitation (less than 90 mm a month).

So, what should you wear in this month?

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.

Swimming

7/10

Camping

3/10

Interested in more climate information?

This site 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 travel conditions. Find out where to go with our weather planner.