Contents
- Weather in May
- Frequently asked questions
- Average temperature in May
- Average pressure in May
- Average wind speed in May
- Average humidity in May
- Average rainfall in May
- Average rainfall days in May
- Average snowfall in May
- Average snowfall days in May
- Average daylight in May
- Average sunshine in May
- Average sunshine days in May
- Average UV index in May
- Average cloud cover in May
- Average visibility in May
Weather in May
Temperature
The start of May signals a slight increase in the average high-temperature, moving from a frosty 7.8°C (46°F) in April to a cool 11.4°C (52.5°F). Throughout May, the average low-temperature in Altdorf dips to an icy 2.7°C (36.9°F).Humidity
In May, the average relative humidity is 84%.Rainfall
In May, the rain falls for 23.3 days. Throughout May, 137mm (5.39") of precipitation is accumulated. In Altdorf, during the entire year, the rain falls for 216.7 days and collects up to 1294mm (50.94") of precipitation.Snowfall
January through May, October through December are months with snowfall in Altdorf, Switzerland. May is the last month it regularly snows in Altdorf. During 0.3 snowfall days, in May, Altdorf aggregates 17mm (0.67") of snow. In Altdorf, during the entire year, snow falls for 41 days and aggregates up to 854mm (33.62") of snow.Daylight
In Altdorf, Switzerland, the average length of the day in May is 15h and 4min.On the first day of the month, sunrise is at 06:09 and sunset at 20:35. On the last day of May, in Altdorf, sunrise is at 05:34 and sunset at 21:11 CEST.
Sunshine
The average sunshine in May is 8.8h.UV index
In Altdorf, the average daily maximum UV index in May is 3. A UV Index reading of 3 to 5 represents a moderate threat to health from exposure to the Sun's UV radiation for average individuals.Note: The maximum daily UV index, 3 in May, converts into the following recommendations:
Be vigilant - Suggestions to stave off sun damage are provided. Solar radiation is at its peak intensity during midday, so it's advisable to stay indoors or in the shade. Outfit yourself in sun-safe attire, like long sleeves, pants, a hat, and UV-blocking sunglasses. Beware! The strength of the UV rays is increased nearly double-fold by the reflection of the snow.
Frequently asked questions
What is the average May temperature in Altdorf?
What is the average humidity in May in Altdorf?
How much does it rain in Altdorf in May?
What is the last month it snows in Altdorf?
What is the average length of the day in May in Altdorf?
What time are sunrise and sunset in May in Altdorf?
How many hours of sunshine does Altdorf have in May?
What is the UV index intensity in May in Altdorf?
Average temperature in May
Altdorf, Switzerland
- Average high temperature in May: 11.4°C
The warmest month (with the highest average high temperature) is August (18.8°C).
The month with the lowest average high temperature is January (-0.9°C).
- Average low temperature in May: 2.7°C
The month with the highest average low temperature is August (8.8°C).
The coldest month (with the lowest average low temperature) is February (-8°C).
Average pressure in May
Altdorf, Switzerland
- Average pressure in May: 1015.9mbar
The month with the highest atmospheric pressure is December (1020.9mbar).
The month with the lowest atmospheric pressure is April (1015.5mbar).
Average wind speed in May
Altdorf, Switzerland
- Average wind speed in May: 6.7km/h
The windiest month (with the highest average wind speed) is December (8km/h).
The calmest month (with the lowest average wind speed) is August (5.7km/h).
Average humidity in May
Altdorf, Switzerland
- Average humidity in May: 84%
The month with the highest relative humidity is March (90%).
The months with the lowest relative humidity are July and August (80%).
Average rainfall in May
Altdorf, Switzerland
- Average rainfall in May: 137mm
The wettest month (with the highest rainfall) is August (166mm).
The driest month (with the least rainfall) is February (70mm).
Average rainfall days in May
Altdorf, Switzerland
- Average rainfall days in May: 23.3 days
The month with the highest number of rainy days is July (24.1 days).
The month with the least rainy days is February (12.3 days).
Average snowfall in May
Altdorf, Switzerland
- Average snowfall in May: 17mm
The month with the highest snowfall is February (232mm).
The months with the least snowfall are June, July, August and September (0mm).
Average snowfall days in May
Altdorf, Switzerland
- Average snowfall days in May: 0.3 days
The month with the highest number of snowfall days is January (10.4 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in May /
Average sunshine in May
Altdorf, Switzerland
- Average daylight in May: 15h and 1min
The month with the longest days is June (Average daylight: 15h and 48min).
The month with the shortest days is December (Average daylight: 8h and 36min).
- Average sunshine in May: 8h and 5min
The month with the most sunshine is July (Average sunshine: 10h and 6min).
The month with the least sunshine is December (Average sunshine: 5h and 0min).
Average sunshine days in May
Altdorf, Switzerland
- Average sunshine days in May: 4.8 days
The month with the most sunshine days is October (15.5 days).
The month with the least sunshine days is July (4.4 days).
Average UV index in May
Altdorf, Switzerland
- Average UV index in May: 3
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 May
Altdorf, Switzerland
- Average cloud cover in May: 48
The months with the most cloud cover are February, March and May (Cloud cover 48).
The months with the least cloud cover are August and October (Cloud cover 37).
Average visibility in May
Altdorf, Switzerland
- Average visibility in May: 8km
The months with the highest visibility are April, May, June, July, August, October, November and December (8km).
The months with the lowest visibility are January, February, March and September (7km).
Altdorf, Switzerland
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