Sion weather in May (Canton of Valais, Switzerland)

Wondering what the weather is like in Sion during May? See what weather conditions to anticipate this month with our guide.

Temperatures

In May, Sion typically experiences moderate temperatures and heavy rainfall. Daytime temperatures generally peak at 12°C, but after sunset, they often decrease to around 2°C.

Precipitation

Sion in May usually receives heavy rainfall, averaging around 163 mm for the month. Delving into the climate records from the past 30 years, one can predict that nearly 19 days of the month will see rainfall.

Average sunshine

There are approximately 230 hours of sunshine this month, meaning plenty of sunny days and a vibrant atmosphere.

If you're looking for dry conditions and comfortable temperatures, May may not be the ideal month to visit Sion. July and August typically offer the most agreeable circumstances. On the other hand, January, February, March, April, May, October, November and December tend to be characterized by conditions that may not be as optimal.

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

 

Sion, monthly averages in May

Min Temperature 2°C  

Max Temperature 12°C  

Chance of Rain 65%  

Precipitation 163 mm  

Rainy days 19 days  

Humidity 62%  

Windspeed 7 km/h  

Sunshine 230 hours  

Percentage Sunshine 56%  

Where to go in Switzerland in May

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

Weather conditions Weather

Temperatures

Precipitation

Map not visible? Whoops sorry! Please refresh the page.

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?

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. Bring a rain jacket in case it rains during your stay.

What To Do

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

Swimming

4/10

Cycling

5/10

Walking

5/10

Camping

3/10

Outdoor sports

5/10

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.