Sion weather in August (Canton of Valais, Switzerland)

The average maximum daytime temperature in Sion in August lies at 14.6°C (58.28°F). The average minimum temperature goes down to around 7.7°C (45.86°F) (often the minimum temperature is noted at night).

August is part of the rainy season with an average precipitation of 199mm (7.8 inches). This makes it the wettest month of the year. There are generally around 16 rainy days. If you enjoy blue skies and sunshine, then this is a great time to go to Sion with 248 hours of sun during the entire month.

 

Sion, monthly averages in August

Show in Fahrenheit

Min Temperature 7 °C  

Max Temperature 14 °C  

Chance of Rain 54%  

Precipitation 199mm  

Rainy days 16 days  

Humidity 67% *  

Sunshine 248 hrs *  

Percentage Sunshine 65% *  

Where to stay in Sion

Where to go in Switzerland in August

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

Weather conditions Weather

Temperatures

Precipitation

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 to wear in August? Visitors traveling to Sion should plan on bringing a totally waterproof coat since it will often be raining. Plan on layering your clothes. Some days or part of the day it will be nice and warm and some moments it can be a bit chilly.

What To Do

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

Swimming

4/10

Cycling

5/10

Walking

5/10

Camping

3/10

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 almost all countries 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 suggests which destination suits your ideal climate conditions. Find out where to go with our weather planner.