Contents
- Weather in January
- Frequently asked questions
- Average temperature in January
- Average pressure in January
- Average wind speed in January
- Average humidity in January
- Average rainfall in January
- Average rainfall days in January
- Average snowfall in January
- Average snowfall days in January
- Average daylight in January
- Average sunshine in January
- Average sunshine days in January
- Average UV index in January
- Average cloud cover in January
- Average visibility in January
Weather in January
Temperature
January stands out as Sion's coldest month, with an average high-temperature of -2.5°C (27.5°F) and a low-temperature of -11°C (12.2°F).Humidity
In January, the average relative humidity is 88%.Rainfall
In January, the rain falls for 14.8 days. Throughout January, 99mm (3.9") of precipitation is accumulated. In Sion, during the entire year, the rain falls for 233.7 days and collects up to 1378mm (54.25") of precipitation.Snowfall
Months with snowfall are January through May, September through December. In Sion, Switzerland, in January, during 9.5 snowfall days, 159mm (6.26") of snow is typically accumulated. Throughout the year, there are 40.9 snowfall days, and 716mm (28.19") of snow is accumulated.Daylight
In January, the average length of the day in Sion is 9h and 6min.On the first day of the month, sunrise is at 08:13 and sunset at 16:54. On the last day of January, sunrise is at 07:55 and sunset at 17:32 CET.
Sunshine
The month with the least sunshine is January, with an average of 4.7h of sunshine.UV index
January and November, with an average maximum UV index of 1, are months with the lowest UV index. A UV Index of 2, and less, symbolizes a minimal health vulnerability from unprotected exposure to Sun's UV rays for ordinary individuals.Note: In January, the maximum UV index of 1 translates into these guidelines:
While sun exposure does not greatly affect most, individuals with fair skin, babies, and children always need vigilant safeguarding. Midday is when the Sun's radiation is strongest; avoid prolonged exposure during this time. By wearing a generously brimmed hat, you can cut UV radiation exposure significantly. On your guard! Snow's reflection can almost double the intensity of the Sun's UV radiation.
Frequently asked questions
What time of the year is the coldest in Sion?
How cold is it in Sion in January?
What is the average humidity in January in Sion?
How many days does it rain in January in Sion?
How much does it snow in Sion in January?
How many hours of daylight does Sion have in January?
When are sunrise and sunset in January in Sion?
What is the month with the least sunshine in Sion?
How many hours of sunshine does Sion have in January?
What is the month with the lowest UV index in Sion?
What is the UV index reading in January in Sion?
Average temperature in January
Sion, Switzerland
- Average high temperature in January: -2.5°C
The warmest month (with the highest average high temperature) is August (16.7°C).
The month with the lowest average high temperature is January (-2.5°C).
- Average low temperature in January: -11°C
The month with the highest average low temperature is August (6.4°C).
The coldest months (with the lowest average low temperature) are January and February (-11°C).
Average pressure in January
Sion, Switzerland
- Average pressure in January: 1019.2mbar
The month with the highest atmospheric pressure is December (1020.9mbar).
The month with the lowest atmospheric pressure is April (1015.2mbar).
Average wind speed in January
Sion, Switzerland
- Average wind speed in January: 8km/h
The windiest month (with the highest average wind speed) is December (8.3km/h).
The calmest month (with the lowest average wind speed) is August (6.2km/h).
Average humidity in January
Sion, Switzerland
- Average humidity in January: 88%
The month with the highest relative humidity is March (90%).
The months with the lowest relative humidity are July and August (79%).
Average rainfall in January
Sion, Switzerland
- Average rainfall in January: 99mm
The wettest month (with the highest rainfall) is May (177mm).
The driest month (with the least rainfall) is September (76mm).
Average rainfall days in January
Sion, Switzerland
- Average rainfall days in January: 14.8 days
The month with the highest number of rainy days is May (25.8 days).
The month with the least rainy days is February (13.8 days).
Average snowfall in January
Sion, Switzerland
- Average snowfall in January: 159mm
The month with the highest snowfall is February (167mm).
The months with the least snowfall are June, July and August (0mm).
Average snowfall days in January
Sion, Switzerland
- Average snowfall days in January: 9.5 days
The month with the highest number of snowfall days is February (10.2 days).
The months with the least snowfall days are June, July and August (0 days).
Average daylight in January /
Average sunshine in January
Sion, Switzerland
- Average daylight in January: 9h and 1min
The month with the longest days is June (Average daylight: 15h and 42min).
The month with the shortest days is December (Average daylight: 8h and 42min).
- Average sunshine in January: 4h and 4min
The months with the most sunshine are July and August (Average sunshine: 9h and 48min).
The month with the least sunshine is January (Average sunshine: 4h and 42min).
Average sunshine days in January
Sion, Switzerland
- Average sunshine days in January: 11.6 days
The month with the most sunshine days is October (13.5 days).
The month with the least sunshine days is June (2.8 days).
Average UV index in January
Sion, Switzerland
- Average UV index in January: 1
The months with the highest UV index are June and July (UV index 4).
The months with the lowest UV index are January and November (UV index 1).
Average cloud cover in January
Sion, Switzerland
- Average cloud cover in January: 50
The months with the most cloud cover are February and March (Cloud cover 53).
The month with the least cloud cover is October (Cloud cover 37).
Average visibility in January
Sion, Switzerland
- Average visibility in January: 6km
The months with the highest visibility are June, July, August, October and November (8km).
The months with the lowest visibility are January, February and March (6km).
Sion, Switzerland
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