Contents
- Weather in April
- Frequently asked questions
- Average temperature in April
- Average pressure in April
- Average wind speed in April
- Average humidity in April
- Average rainfall in April
- Average rainfall days in April
- Average snowfall in April
- Average snowfall days in April
- Average daylight in April
- Average sunshine in April
- Average sunshine days in April
- Average UV index in April
- Average cloud cover in April
- Average visibility in April
Weather in April
Temperature
Sion's transition into April is noticed by a slight rise in the average high-temperature, advancing from an icy 0.9°C (33.6°F) in March to a still wintry 5°C (41°F). Throughout April, Sion registers a consistent average low-temperature of -3.2°C (26.2°F).Humidity
In Sion, Switzerland, the average relative humidity in April is 87%.Rainfall
In Sion, during April, the rain falls for 22.6 days and regularly aggregates up to 91mm (3.58") of precipitation. 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, during April, snow falls for 2.7 days and regularly aggregates up to 40mm (1.57") of snow. Throughout the year, there are 40.9 snowfall days, and 716mm (28.19") of snow is accumulated.Daylight
In Sion, Switzerland, the average length of the day in April is 13h and 35min.On the first day of April in Sion, sunrise is at 07:09 and sunset at 19:59. On the last day of the month, sunrise is at 06:17 and sunset at 20:38 CEST.
Sunshine
In April, the average sunshine in Sion is 7.9h.UV index
In Sion, Switzerland, the average daily maximum UV index in April is 2. A UV Index value of 2, and less, symbolizes a low threat to health from unprotected exposure to Sun's UV rays for average individuals.Note: A maximum UV index of 2 in April translates into the following recommendations:
While most individuals can withstand prolonged sun exposure, it is imperative that babies, children, and those with sensitive skin always be shielded. Limiting exposure to the direct Sun during midday hours can help prevent harmful UV radiation effects. Employ a hat with a wide brim for robust protection, cutting UV exposure by half. Be attentive! The reflective property of snow can nearly double the Sun's UV radiation.
Frequently asked questions
Is April cold in Sion?
What is the average humidity in April in Sion?
How much does it rain in Sion in April?
How many days does it snow in April in Sion?
What is the average length of the day in April in Sion?
What time are sunrise and sunset in April in Sion?
How long on average sun shines in April in Sion?
What is the UV index intensity in April in Sion?
Average temperature in April
Sion, Switzerland
- Average high temperature in April: 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 April: -3.2°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 April
Sion, Switzerland
- Average pressure in April: 1015.2mbar
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 April
Sion, Switzerland
- Average wind speed in April: 7.4km/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 April
Sion, Switzerland
- Average humidity in April: 87%
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 April
Sion, Switzerland
- Average rainfall in April: 91mm
The wettest month (with the highest rainfall) is May (177mm).
The driest month (with the least rainfall) is September (76mm).
Average rainfall days in April
Sion, Switzerland
- Average rainfall days in April: 22.6 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 April
Sion, Switzerland
- Average snowfall in April: 40mm
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 April
Sion, Switzerland
- Average snowfall days in April: 2.7 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 April /
Average sunshine in April
Sion, Switzerland
- Average daylight in April: 13h and 4min
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 April: 7h and 5min
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 April
Sion, Switzerland
- Average sunshine days in April: 4.6 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 April
Sion, Switzerland
- Average UV index in April: 2
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 April
Sion, Switzerland
- Average cloud cover in April: 49
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 April
Sion, Switzerland
- Average visibility in April: 7km
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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