March weather forecast
Sion, Switzerland

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Weather in March

Transitioning into the warmer months, March sees a slight rise in average temperatures which now range from -7.7°C (18.1°F) to 0.9°C (33.6°F). The month is characterized by increased daylight hours and a decrease in snowfall compared to February. Although the chill remains, some thermometers may register marginally positive readings on certain days. Moreover, the climbing humidity levels might give a feel of added cold. Remember, it's still a good time for visitors keen on winter activities.

Temperature

March brings a slight elevation in the average high-temperature, transitioning from February's freezing cold -2.3°C (27.9°F) to a wintry 0.9°C (33.6°F). Sion throughout March, records an average low-temperature of -7.7°C (18.1°F).

Humidity

March is the most humid month, with an average relative humidity of 90%.

Rainfall

In March, in Sion, the rain falls for 19.1 days. Throughout March, 101mm (3.98") of precipitation is accumulated. Throughout the year, there are 233.7 rainfall days, and 1378mm (54.25") of precipitation is accumulated.

Snowfall

Months with snowfall in Sion are January through May, September through December. In Sion, in March, snow falls for 7.2 days, with typically accumulated 120mm (4.72") of snow. Throughout the year, there are 40.9 snowfall days, and 716mm (28.19") of snow is accumulated.

Daylight

In March, the average length of the day in Sion is 11h and 56min.
On the first day of the month, sunrise is at 07:08 and sunset at 18:17. On the last day of March, in Sion, sunrise is at 06:10 and sunset at 18:58 CET.

Sunshine

The average sunshine in March is 5.7h.

UV index

The average daily maximum UV index in March is 2. A UV Index estimate of 2, and below, represents a minimal health vulnerability from exposure to the Sun's UV rays for average individuals.
Note: A typical high UV index of 2 in March suggests the following recommendations:
Extended time in the sun generally does not harm most, but those with sensitive skin, infants, and children should always be protected. The best time to avoid the Sun's harmful UV radiation is during midday when it's most potent. Tightly woven clothing, when worn loosely, shields effectively against the Sun. Mind this! Nearly twice the UV radiation from the Sun can be reflected by the snow.
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Frequently asked questions

How cold is it in Sion in March?

The high-temperature during March is 0.9°C (33.6°F) and the low-temperature is -7.7°C (18.1°F).

What is the most humid month in Sion?

With an average relative humidity of 90%, March is the most humid month in Sion, Switzerland.

What is the average humidity in March in Sion?

The average relative humidity in March in Sion is 90%.

How much does it rain in Sion in March?

In March, in Sion, the rain falls for 19.1 days. Throughout March, 101mm (3.98") of precipitation is accumulated.

How much does it snow in Sion in March?

In Sion, during March, snow falls for 7.2 days and regularly aggregates up to 120mm (4.72") of snow.

What is the average length of the day in March in Sion?

In Sion, Switzerland, the average day length in March is 11h and 56min.

What time are sunrise and sunset in March in Sion?

On the first day of March, sunrise is at 07:08 and sunset at 18:17. On the last day of the month, sunrise is at 06:10 and sunset at 18:58 CET.

How long on average sun shines in March in Sion?

In Sion, the average sunshine duration in March is 5.7h.

What is the UV index reading in March in Sion?

In March, the average daily maximum UV index in Sion, Switzerland, is 2. A UV Index reading of 2, and below, represents a low health risk from exposure to the Sun's UV radiation.
Average humidity
Average rainfall days
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in March
Sion, Switzerland

Average temperature in March - Sion, Switzerland
  • Average high temperature in March: 0.9°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 March: -7.7°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).

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Average pressure in March
Sion, Switzerland

Average pressure in March - Sion, Switzerland
  • Average pressure in March: 1016.8mbar

The month with the highest atmospheric pressure is December (1020.9mbar).
The month with the lowest atmospheric pressure is April (1015.2mbar).

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Average wind speed in March
Sion, Switzerland

Average wind speed in March - Sion, Switzerland
  • Average wind speed in March: 8.1km/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).

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Average humidity in March
Sion, Switzerland

Average humidity in March - Sion, Switzerland
  • Average humidity in March: 90%

The month with the highest relative humidity is March (90%).
The months with the lowest relative humidity are July and August (79%).

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Average rainfall in March
Sion, Switzerland

Average rainfall in March - Sion, Switzerland
  • Average rainfall in March: 101mm

The wettest month (with the highest rainfall) is May (177mm).
The driest month (with the least rainfall) is September (76mm).

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Average rainfall days in March
Sion, Switzerland

Average rainfall days in March - Sion, Switzerland
  • Average rainfall days in March: 19.1 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).

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Average snowfall in March
Sion, Switzerland

Average snowfall in March - Sion, Switzerland
  • Average snowfall in March: 120mm

The month with the highest snowfall is February (167mm).
The months with the least snowfall are June, July and August (0mm).

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Average snowfall days in March
Sion, Switzerland

Average snowfall days in March - Sion, Switzerland
  • Average snowfall days in March: 7.2 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).

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Average daylight in March /
Average sunshine in March
Sion, Switzerland

Average daylight in March / Average sunshine in March - Sion, Switzerland
  • Average daylight in March: 11h and 5min

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 March: 5h 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).

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Average sunshine days in March
Sion, Switzerland

Average sunshine days in March - Sion, Switzerland
  • Average sunshine days in March: 7.5 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).

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Average UV index in March
Sion, Switzerland

Average UV index in March - Sion, Switzerland
  • Average UV index in March: 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).

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Average cloud cover in March
Sion, Switzerland

Average cloud cover in March - Sion, Switzerland
  • Average cloud cover in March: 53

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).

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Average visibility in March
Sion, Switzerland

Average visibility in March - Sion, Switzerland
  • Average visibility in March: 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).

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Sion, Switzerland

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