Average weather in August in Sion (Canton of Valais), Switzerland

The average minimum temperature (usually the minimum temperature is noted during the night) in Sion in August is 11.0°C (51.8°F). The amount of rain in August is normal with an average of 63mm (2.5in). This makes it the most wet month of the year. The average maximum daytime temperature lies around 24.0°C (75.2°F). If you enjoy looking at a blue sky and love the sun than this is a great time to go to Sion with 231 hours of sun. August is known as one of the best months to visit Sion.


So what to wear in August? Bring a rain jacket just in case since it will be raining a few days during this period. Also bring your shorts or a skirt because it can be very warm or even hot.

No idea where to travel to this year? We now have a tool which suggests which destination suits your ideal climate conditions. Find out where to go with our weather planner.

For other monthly average weather and what to do in August look at the numbers below.

Monthly Averages in August

Show in Fahrenheit

Min Temperature 11 °C
Max Temperature 24 °C
Precipitation 63mm
Sunshine Hours 231

Where to stay in Sion

What To Do

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

Swimming
9/10
Cycling
10/10
Walking
10/10
Barbeque
8/10
Camping
8/10
Outdoor sports
10/10

Weather Forecasts for Sion (Canton of Valais)

TUE Dec 07
-2°C | -8°C

Heavy snow

WED Dec 08
-5°C | -8°C

Heavy snow

THU Dec 09
-6°C | -17°C

Heavy snow

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.