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
May
Weather in May
Temperature
Observing a minor shift, the average high-temperature during May adjusts from April's icy 2.4°C (36.3°F) to a frosty 6.6°C (43.9°F). The average nighttime temperature lowers to a freezing cold -1.9°C (28.6°F) throughout May.Humidity
In Promontogno, the average relative humidity in May is 91%.Rainfall
In Promontogno, in May, during 17.8 rainfall days, 68mm (2.68") of precipitation is typically accumulated. Throughout the year, there are 139.9 rainfall days, and 641mm (25.24") of precipitation is accumulated.Snowfall
Months with snowfall are January through June, September through December. In Promontogno, during May, snow falls for 5.3 days and regularly aggregates up to 89mm (3.5") of snow. Throughout the year, there are 97.2 snowfall days, and 1956mm (77.01") of snow is accumulated.Daylight
The average length of the day in May is 15h and 0min.On the first day of the month, sunrise is at 06:06 and sunset at 20:30. On the last day of May, sunrise is at 05:33 and sunset at 21:05 CEST.
Sunshine
In Promontogno, Switzerland, the average sunshine in May is 6.9h.UV index
In May, the average daily maximum UV index is 2. A UV Index of 2, and less, symbolizes a low health risk from unprotected exposure to Sun's UV rays for the average person.Note: The UV index of 2 during May leads to these advisories:
Most people can stay in the Sun for up to 1 hour without burning, apart from children that always must be protected from sun exposure. Midday is when the Sun's radiation is strongest; avoid prolonged exposure during this time. Limit sun-induced ocular harm with sunglasses that feature UVA and UVB filtration. Be vigilant! The reflective nature of snow can increase the Sun's UV radiation nearly twofold.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How cold is it in May?
What is the average humidity in May?
How much does it rain in May?
How many days does it snow in May?
How many hours of daylight does Promontogno have in May?
What time are sunrise and sunset in May?
How long on average sun shines in May?
How high is the UV index in May?
Average temperature in May
Promontogno, Switzerland
- Average high temperature in May: 6.6°C
The warmest month (with the highest average high temperature) is July (15.4°C).
The month with the lowest average high temperature is January (-4.4°C).
- Average low temperature in May: -1.9°C
The month with the highest average low temperature is August (5°C).
The coldest month (with the lowest average low temperature) is January (-13.9°C).
Average pressure in May
Promontogno, Switzerland
- Average pressure in May: 1015.4mbar
The month with the highest atmospheric pressure is December (1020.6mbar).
The month with the lowest atmospheric pressure is April (1015.3mbar).
Average wind speed in May
Promontogno, Switzerland
- Average wind speed in May: 9km/h
The windiest months (with the highest average wind speed) are February and December (9.9km/h).
The calmest month (with the lowest average wind speed) is August (7.5km/h).
Average humidity in May
Promontogno, Switzerland
- Average humidity in May: 91%
The month with the highest relative humidity is April (94%).
The month with the lowest relative humidity is July (81%).
Average rainfall in May
Promontogno, Switzerland
- Average rainfall in May: 68mm
The wettest month (with the highest rainfall) is November (84mm).
The driest month (with the least rainfall) is January (20mm).
Average rainfall days in May
Promontogno, Switzerland
- Average rainfall days in May: 17.8 days
The month with the highest number of rainy days is July (22.6 days).
The month with the least rainy days is December (2.6 days).
Average snowfall in May
Promontogno, Switzerland
- Average snowfall in May: 89mm
The month with the highest snowfall is November (492mm).
The months with the least snowfall are July and August (0mm).
Average snowfall days in May
Promontogno, Switzerland
- Average snowfall days in May: 5.3 days
The month with the highest number of snowfall days is March (17 days).
The month with the least snowfall days is August (0 days).
Average daylight in May /
Average sunshine in May
Promontogno, Switzerland
- Average daylight in May: 15h and 0min
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 May: 6h and 5min
The month with the most sunshine is July (Average sunshine: 9h and 54min).
The month with the least sunshine is November (Average sunshine: 3h and 54min).
Average sunshine days in May
Promontogno, Switzerland
- Average sunshine days in May: 7.8 days
The month with the most sunshine days is December (18.8 days).
The month with the least sunshine days is July (6.2 days).
Average UV index in May
Promontogno, Switzerland
- Average UV index in May: 2
The months with the highest UV index are June, July and August (UV index 3).
The months with the lowest UV index are January, February, March, April, October and November (UV index 1).
Average cloud cover in May
Promontogno, Switzerland
- Average cloud cover in May: 64
The month with the most cloud cover is April (Cloud cover 66).
The month with the least cloud cover is July (Cloud cover 47).
Average visibility in May
Promontogno, Switzerland
- Average visibility in May: 6km
The month with the highest visibility is July (8km).
The month with the lowest visibility is April (5km).
