Climate in Sion (Canton of Valais, Switzerland)

The graphs below show the monthly weather averages over the year.

Average day and night temperature

The mean minimum and maximum temperatures over the year. Show in Fahrenheit

Average min and max temperatures in Sion, Switzerland   Copyright © 2023  weather-and-climate.com

Feel free to add this climate graph to your website. Click the copy button above.

Monthly hours of sunshine

The average monthly total hours of sunshine over the year

Average monthly sunhours in Sion, Switzerland   Copyright © 2023  weather-and-climate.com

Feel free to add this climate graph to your website. Click the copy button above.

Daily percent of sunshine

The mean percent of hours of sunhours during the day over the year

Average percent of sunshine in Sion, Switzerland   Copyright © 2023  weather-and-climate.com

Feel free to add this climate graph to your website. Click the copy button above.

Where to stay in Sion

Booking.com

Monthly precipitation

The mean monthly precipitation over the year, including rain, snow, hail etc. Show in Inches

Average precipitation (rain/snow) in Sion, Switzerland   Copyright © 2023  weather-and-climate.com

Feel free to add this climate graph to your website. Click the copy button above.

Monthly rainy days

The average number of days each month with rain, snow, hail etc.

Average rainy days (rain/snow) in Sion, Switzerland   Copyright © 2023  weather-and-climate.com

Feel free to add this climate graph to your website. Click the copy button above.

Average humidity

The mean monthly relative humidity over the year

Average relative humidity in Sion, Switzerland   Copyright © 2023  weather-and-climate.com

Feel free to add this climate graph to your website. Click the copy button above.

Average wind speed

The mean monthly wind speed over the year (in meters per second)

Average wind speed in Sion, Switzerland   Copyright © 2023  weather-and-climate.com

Feel free to add this climate graph to your website. Click the copy button above.

Weather Forecasts for Sion (Canton of Valais)

Tue   May 30
30°C | 14°C
NW 4 km/h
broken clouds and no rain

broken clouds and no rain

Wed   May 31
28°C | 14°C
N 7 km/h
0.6 mm
partly cloudy and thunder

partly cloudy and thunder

Thu   Jun 01
30°C | 13°C
NW 4 km/h
almost clear and no rain

almost clear and no rain

The best time of year to visit Sion in Switzerland



Other facts from our historical climate data:

  • Which is the warmest month in Sion?
    July has an average maximum temperature of 15°C (59°F) and is the warmest month of the year.
  • Which is the coldest month in Sion?
    The coldest month is January with an average maximum temperature of -2°C (29°F).
  • Which is the wettest month in Sion?
    August tops the wettest month list with 199mm (7.8in) of rainfall.
  • Which is the driest month in Sion?
    February is the driest month with 110mm (4.3in) of precipitation.
  • Which is the sunniest month in Sion?
    July is the sunniest month with an average of 270 hours of sunshine.

  • 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.