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
During May, the average high-temperature is a fresh 12.8°C (55°F), maintaining a close resemblance to that of the preceding month. In Port-Valais, the average nighttime temperature during May is an icy 3.7°C (38.7°F).Humidity
In May, the average relative humidity is 82%.Rainfall
The month with the most rainfall in Port-Valais is May, when the rain falls for 23.5 days and typically aggregates up to 144mm (5.67") of precipitation.Snowfall
January through May, September through December are months with snowfall. May is the last month it regularly snows in Port-Valais. During 0.2 snowfall days, in May, Port-Valais aggregates 9mm (0.35") of snow. Throughout the year, in Port-Valais, there are 31.1 snowfall days, and 561mm (22.09") of snow is accumulated.Daylight
In Port-Valais, the average length of the day in May is 15h and 1min.On the first day of May in Port-Valais, sunrise is at 06:17 and sunset at 20:41. On the last day of the month, sunrise is at 05:43 and sunset at 21:16 CEST.
Sunshine
The average sunshine in May is 9.5h.UV index
The average daily maximum UV index in May is 3. A UV Index estimate of 3 to 5 represents a moderate health risk from unprotected exposure to Sun's UV rays for ordinary individuals.Note: The UV index of 3 in May translates into these instructions:
Ensure safety - Imperative it is to shield skin and eyes from damage. UV radiation is strongest from the Sun during midday; protect yourself by staying in shaded areas. In the presence of strong sunlight, it's crucial to wear sunglasses that ward off UVA and UVB rays. Notice! The UV radiation of the Sun can be intensified nearly twofold due to the reflective quality of snow.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the usual temperature for Port-Valais in May?
What is the average humidity in May in Port-Valais?
What is the rainiest month in Port-Valais?
How many days does it rain in May in Port-Valais?
What is the last month it snows in Port-Valais?
What is the average length of the day in May in Port-Valais?
What time are sunrise and sunset in May in Port-Valais?
How many hours of sunshine does Port-Valais have in May?
How high is the UV index in May in Port-Valais?
Average temperature in May
Port-Valais, Switzerland
- Average high temperature in May: 12.8°C
The warmest months (with the highest average high temperature) are July and August (19.8°C).
The month with the lowest average high temperature is January (0.6°C).
- Average low temperature in May: 3.7°C
The month with the highest average low temperature is July (9.3°C).
The coldest month (with the lowest average low temperature) is February (-7.1°C).
Average pressure in May
Port-Valais, Switzerland
- Average pressure in May: 1015.9mbar
The month with the highest atmospheric pressure is December (1021.1mbar).
The month with the lowest atmospheric pressure is April (1015.3mbar).
Average wind speed in May
Port-Valais, Switzerland
- Average wind speed in May: 7.6km/h
The windiest month (with the highest average wind speed) is December (9.2km/h).
The calmest month (with the lowest average wind speed) is August (6.5km/h).
Average humidity in May
Port-Valais, Switzerland
- Average humidity in May: 82%
The month with the highest relative humidity is February (87%).
The month with the lowest relative humidity is August (77%).
Average rainfall in May
Port-Valais, Switzerland
- Average rainfall in May: 144mm
The wettest month (with the highest rainfall) is May (144mm).
The driest month (with the least rainfall) is September (54mm).
Average rainfall days in May
Port-Valais, Switzerland
- Average rainfall days in May: 23.5 days
The month with the highest number of rainy days is May (23.5 days).
The month with the least rainy days is October (13.3 days).
Average snowfall in May
Port-Valais, Switzerland
- Average snowfall in May: 9mm
The month with the highest snowfall is January (148mm).
The months with the least snowfall are June, July and August (0mm).
Average snowfall days in May
Port-Valais, Switzerland
- Average snowfall days in May: 0.2 days
The month with the highest number of snowfall days is February (8.6 days).
The months with the least snowfall days are June, July and August (0 days).
Average daylight in May /
Average sunshine in May
Port-Valais, 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: 9h and 3min
The month with the most sunshine is July (Average sunshine: 10h and 30min).
The months with the least sunshine are January and December (Average sunshine: 5h and 30min).
Average sunshine days in May
Port-Valais, Switzerland
- Average sunshine days in May: 4.3 days
The month with the most sunshine days is October (15 days).
The month with the least sunshine days is May (4.3 days).
Average UV index in May
Port-Valais, Switzerland
- Average UV index in May: 3
The months with the highest UV index are June, July and August (UV index 4).
The months with the lowest UV index are January, February, March, November and December (UV index 2).
Average cloud cover in May
Port-Valais, Switzerland
- Average cloud cover in May: 42
The months with the most cloud cover are January, February, March, May and December (Cloud cover 42).
The month with the least cloud cover is August (Cloud cover 30).
Average visibility in May
Port-Valais, Switzerland
- Average visibility in May: 8km
The months with the highest visibility are October and November (9km).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September and December (8km).
