May weather forecastPerroy, Switzerland
May
Weather in May
May, the last month of the spring in Perroy, is a moderate month, with an average temperature varying between 6.6°C (43.9°F) and 15.5°C (59.9°F).Temperature
Perroy in May witnesses an average high-temperature of a moderate 15.5°C (59.9°F), indicating a slight variation from April's 12.7°C (54.9°F). Nighttime temperatures in Perroy, Switzerland, hover around an average low of 6.6°C (43.9°F) in May.Humidity
In May, the average relative humidity in Perroy, Switzerland, is 79%.Rainfall
In May, the rain falls for 20.4 days. Throughout May, 90mm (3.54") of precipitation is accumulated. Throughout the year, there are 183.4 rainfall days, and 862mm (33.94") of precipitation is accumulated.Snowfall
Months with snowfall in Perroy are January through May, October through December. May is the last month it regularly snows in Perroy. During 0.1 snowfall days, in May, Perroy aggregates 3mm (0.12") of snow. Throughout the year, in Perroy, Switzerland, there are 24.5 snowfall days, and 350mm (13.78") of snow is accumulated.Daylight
In May, the average length of the day in Perroy is 15h and 1min.On the first day of the month, sunrise is at 06:19 and sunset at 20:43. On the last day of May, in Perroy, sunrise is at 05:45 and sunset at 21:19 CEST.
Sunshine
In May, the average sunshine is 9.9h.UV index
The average daily maximum UV index in May in Perroy is 4. A UV Index value of 3 to 5 symbolizes a medium health hazard from unprotected exposure to Sun's UV rays for the ordinary person.Note: During May, 4 as the daily maximum UV index converts into the following advice:
Prioritize safety - The need to safeguard skin and eyes from harm is emphasized. Considering the Sun's intensity during midday, it's wise to minimize direct exposure. Opt for tightly woven and loose clothing to enhance protection from the Sun. Pay attention! The reflection of snow can enhance the Sun's UV radiation almost double.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in May
Perroy, Switzerland
- Average high temperature in May: 15.5°C
The warmest month (with the highest average high temperature) is August (22.3°C).
The month with the lowest average high temperature is January (3.3°C).
- Average low temperature in May: 6.6°C
The months with the highest average low temperature are July and August (12.3°C).
The coldest month (with the lowest average low temperature) is February (-2.8°C).
Average pressure in May
Perroy, Switzerland
- Average pressure in May: 1016.1mbar
The month with the highest atmospheric pressure is December (1021.1mbar).
The month with the lowest atmospheric pressure is April (1015.4mbar).
Average wind speed in May
Perroy, Switzerland
- Average wind speed in May: 9.3km/h
The windiest month (with the highest average wind speed) is February (11.2km/h).
The calmest month (with the lowest average wind speed) is August (6.7km/h).
Average humidity in May
Perroy, Switzerland
- Average humidity in May: 79%
The months with the highest relative humidity are January and February (82%).
The month with the lowest relative humidity is August (76%).
Average rainfall in May
Perroy, Switzerland
- Average rainfall in May: 90mm
The wettest month (with the highest rainfall) is December (103mm).
The driest month (with the least rainfall) is September (42mm).
Average rainfall days in May
Perroy, Switzerland
- Average rainfall days in May: 20.4 days
The months with the highest number of rainy days are May and June (20.4 days).
The month with the least rainy days is October (11.5 days).
Average snowfall in May
Perroy, Switzerland
- Average snowfall in May: 3mm
The month with the highest snowfall is December (98mm).
The months with the least snowfall are June, July, August and September (0mm).
Average snowfall days in May
Perroy, Switzerland
- Average snowfall days in May: 0.1 days
The month with the highest number of snowfall days is February (6.6 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in May /
Average sunshine in May
Perroy, Switzerland
- Average daylight in May: 15h and 0min
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 42min).
- Average sunshine in May: 9h and 54min
The months with the most sunshine are July and August (Average sunshine: 10h and 42min).
The month with the least sunshine is December (Average sunshine: 5h and 36min).
Average sunshine days in May
Perroy, Switzerland
- Average sunshine days in May: 7.7 days
The month with the most sunshine days is October (17.4 days).
The month with the least sunshine days is June (7.3 days).
Average UV index in May
Perroy, Switzerland
- Average UV index in May: 4
The months with the highest UV index are June and July (UV index 5).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in May
Perroy, Switzerland
- Average cloud cover in May: 37
The months with the most cloud cover are January and December (Cloud cover 40).
The month with the least cloud cover is August (Cloud cover 28).
Average visibility in May
Perroy, Switzerland
- Average visibility in May: 9km
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (9km).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (9km).
