Sion weather in May (Canton of Valais, Switzerland)
Curious about the May weather in Sion? Check out this comprehensive weather guide.
In May, Sion generally has moderate temperatures and heavy rainfall. Throughout the daytime, temperatures often hover around 12°C. However, as the sun sets and evening approaches, there's a noticeable cool-down, with temperatures gently dropping to a more temperate 2°C.
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.
With around 230 hours of sunshine, the days are mostly sunny. It gives a pleasant and vibrant feel to the area.
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
Where to go in Switzerland in May
Find out more about the weather in Switzerland in May and which places have the best weather conditions in this month.
So, what should you wear in Sion in May?
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 in May.
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 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 climate conditions. Find out where to go with our weather planner.