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

The average minimum temperature (usually the minimum temperature is noted during the night) in Sion in May is 7.0°C (44.6°F). The amount of rain in May is normal with an average of 39mm (1.5in). The average maximum daytime temperature lies around 20.0°C (68°F). If you enjoy looking at a blue sky and love the sun than this is a great time to go to Sion with 204 hours of sun.


So what to wear in May? Bring a rain jacket just in case since it will be raining a few days during this period. 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 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 May look at the numbers below.

Monthly Averages in May

Show in Fahrenheit

Min Temperature 7 °C
Max Temperature 20 °C
Precipitation 39mm
Sunshine Hours 204

Where to stay in Sion

What To Do

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

Cycling
10/10
Walking
10/10
Barbeque
9/10
Camping
5/10
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.