May weather forecastWiltz, Luxembourg
May weather for Wiltz, Luxembourg: Throughout the year, in Wiltz, Luxembourg, there are 189.4 rainfall days, and 645mm (25.39") of precipitation is accumulated. In Wiltz, during the entire year, snow falls for 36.3 days and aggregates up to 327mm (12.87") of snow.
May
Weather in May
May in Wiltz is a manifestation of spring in all its glory. It provides a clear transition from spring to early summer in terms of temperature, light, and precipitation. Noticeably, the city experiences the longest sunshine duration of approximately 7.6 hours per day. The occurrence of snow is almost negligible, while rainfall becomes a more established weather pattern. Steady breezes and a growing number of daylight hours make outdoor activities incredibly appealing.Temperature
The arrival of May in Wiltz records an average high-temperature of a still mild 15.6°C (60.1°F), closely related to the 13.1°C (55.6°F) observed in April. Wiltz experiences an average low-temperature of 5.8°C (42.4°F) in the month of May.Humidity
In May, the average relative humidity is 84%.Rainfall
In May, the rain falls for 19.3 days. Throughout May, 56mm (2.2") of precipitation is accumulated. Throughout the year, in Wiltz, Luxembourg, there are 189.4 rainfall days, and 645mm (25.39") of precipitation is accumulated.Snowfall
January through May, October through December are months with snowfall. May is the last month it regularly snows. During 0.1 snowfall days, in May, Wiltz aggregates 2mm (0.08") of snow. In Wiltz, during the entire year, snow falls for 36.3 days and aggregates up to 327mm (12.87") of snow.Daylight
The average length of the day in May is 15h and 26min.On the first day of the month, sunrise is at 06:11 and sunset at 20:55. On the last day of May, sunrise is at 05:32 and sunset at 21:35 CEST.
Sunshine
In May, the average sunshine is 7.6h.UV index
In Wiltz, the average daily maximum UV index in May is 3. A UV Index of 3 to 5 symbolizes a medium vulnerability from exposure to the Sun's UV rays for ordinary individuals.Note: The daily high UV index of 3 during May translates into the following recommendations:
Ensure safety - Imperative it is to shield skin and eyes from damage. The Sun is most powerful around mid-day, so it's a good practice to reduce direct exposure. Prioritize a wide-brim hat for comprehensive sun defense for your face, neck, eyes, and ears. Heads up! The UV radiation from the Sun can almost be doubled by snow reflection.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in May
Wiltz, Luxembourg
- Average high temperature in May: 15.6°C
The warmest month (with the highest average high temperature) is August (20.9°C).
The month with the lowest average high temperature is January (2.5°C).
- Average low temperature in May: 5.8°C
The months with the highest average low temperature are July and August (11.1°C).
The coldest months (with the lowest average low temperature) are January and February (-1.8°C).
Average pressure in May
Wiltz, Luxembourg
- Average pressure in May: 1016.1mbar
The months with the highest atmospheric pressure are September and December (1017.8mbar).
The month with the lowest atmospheric pressure is November (1013.8mbar).
Average wind speed in May
Wiltz, Luxembourg
- Average wind speed in May: 11.6km/h
The windiest month (with the highest average wind speed) is February (16.2km/h).
The calmest month (with the lowest average wind speed) is August (10km/h).
Average humidity in May
Wiltz, Luxembourg
- Average humidity in May: 84%
The month with the highest relative humidity is December (93%).
The month with the lowest relative humidity is April (79%).
Average rainfall in May
Wiltz, Luxembourg
- Average rainfall in May: 56mm
The wettest month (with the highest rainfall) is December (76mm).
The driest month (with the least rainfall) is April (37mm).
Average rainfall days in May
Wiltz, Luxembourg
- Average rainfall days in May: 19.3 days
The month with the highest number of rainy days is July (19.6 days).
The month with the least rainy days is February (11.1 days).
Average snowfall in May
Wiltz, Luxembourg
- Average snowfall in May: 2mm
The month with the highest snowfall is February (90mm).
The months with the least snowfall are June, July, August and September (0mm).
Average snowfall days in May
Wiltz, Luxembourg
- Average snowfall days in May: 0.1 days
The month with the highest number of snowfall days is January (9.7 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in May /
Average sunshine in May
Wiltz, Luxembourg
- Average daylight in May: 15h and 24min
The month with the longest days is June (Average daylight: 16h and 18min).
The month with the shortest days is December (Average daylight: 8h and 12min).
- Average sunshine in May: 7h and 36min
The month with the most sunshine is July (Average sunshine: 8h and 42min).
The month with the least sunshine is December (Average sunshine: 2h and 36min).
Average sunshine days in May
Wiltz, Luxembourg
- Average sunshine days in May: 9.2 days
The month with the most sunshine days is September (13 days).
The month with the least sunshine days is June (7.2 days).
Average UV index in May
Wiltz, Luxembourg
- Average UV index in May: 3
The month with the highest UV index is July (UV index 5).
The months with the lowest UV index are January, February, March, October, November and December (UV index 2).
Average cloud cover in May
Wiltz, Luxembourg
- Average cloud cover in May: 52
The month with the most cloud cover is December (Cloud cover 76).
The month with the least cloud cover is August (Cloud cover 44).
Average visibility in May
Wiltz, Luxembourg
- Average visibility in May: 8km
The month with the highest visibility is April (9km).
The months with the lowest visibility are January, October, November and December (7km).





