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 14.0°C (57.2°F). The amount of rain in August is normal with an average of 59mm (2.3in). It rains on average a total of 8 days. The average maximum daytime temperature lies around 26.7°C (80.06°F). If you enjoy looking at a blue sky and love the sun than this is a great time to go to Sion with 248 hours of sun.


So what to wear in August? Visitors traveling to Sion might want to wear dresses, tops, T-shirts and skirts made of cotton or linen. Shorts for men made of cotton or linen are good options for staying cool on a hot day.

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 14 °C
Max Temperature 26 °C
Chance of Rain 27%
Precipitation 59mm
Rainy Days 8
Sunshine Hours 248

Where to stay in Sion

What is the best place to go in August in Switzerland?

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

What To Do

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

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

Weather Forecasts for Sion (Canton of Valais)

SAT May 28
16°C | 4°C
Partly cloudy

Partly cloudy

SUN May 29
12°C | 3°C
Patchy rain possible

Patchy rain possible

MON May 30
13°C | 3°C
Moderate rain

Moderate rain

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.