May weather forecastSandweiler, Luxembourg
May
Weather in May
May in Sandweiler brings about warmer weather, with greenery enhancing the city's aesthetic charm. An increase in mean temperatures to 16.7°C (62.1°F) denotes a significant climb towards the summer season. This month offers one of the highest daylight hours in the year, making it ideal for outdoor leisure and sports activities. Relative to April, May shows a considerable increase in temperatures, hinting at the arrival of summer with a rise in UV levels. As June approaches, one can anticipate an even greater number of sunshine hours, paving a bright pathway towards summer.Temperature
With the transition into May, Sandweiler notes an average high-temperature of a still refreshing 16.7°C (62.1°F), closely resembling April. An average low-temperature of 6.7°C (44.1°F) is noted during the nights in May in Sandweiler.Humidity
In May, the average relative humidity is 82%.Rainfall
In May, in Sandweiler, the rain falls for 18 days. Throughout May, 53mm (2.09") of precipitation is accumulated. Throughout the year, there are 171.5 rainfall days, and 545mm (21.46") 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, Sandweiler aggregates 1mm (0.04") of snow. In Sandweiler, during the entire year, snow falls for 28 days and aggregates up to 235mm (9.25") of snow.Daylight
In May, the average length of the day is 15h and 23min.On the first day of the month, sunrise is at 06:11 and sunset at 20:53. On the last day of May, sunrise is at 05:32 and sunset at 21:32 CEST.
Sunshine
The average sunshine in May is 8.7h.UV index
The average daily maximum UV index in May in Sandweiler is 4. A UV Index reading of 3 to 5 represents a medium health hazard from exposure to the Sun's UV radiation for ordinary individuals.Note: In May, the maximum UV index of 4 suggests these recommendations:
Act with care - The need to guard against sun damage is communicated. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. Shield yourself from the harmful effects of UV radiation with sun-protective attire, a hat, and quality sunglasses. Remember to consider! The UV radiation from the Sun can be intensified nearly twice by the reflection of snow.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in May
Sandweiler, Luxembourg
- Average high temperature in May: 16.7°C
The warmest months (with the highest average high temperature) are July and August (22.6°C).
The month with the lowest average high temperature is January (3.2°C).
- Average low temperature in May: 6.7°C
The month with the highest average low temperature is August (12.3°C).
The coldest month (with the lowest average low temperature) is January (-1.2°C).
Average pressure in May
Sandweiler, Luxembourg
- Average pressure in May: 1016.1mbar
The month with the highest atmospheric pressure is December (1018.2mbar).
The month with the lowest atmospheric pressure is November (1014.1mbar).
Average wind speed in May
Sandweiler, Luxembourg
- Average wind speed in May: 11km/h
The windiest month (with the highest average wind speed) is February (15.2km/h).
The calmest month (with the lowest average wind speed) is August (9.6km/h).
Average humidity in May
Sandweiler, Luxembourg
- Average humidity in May: 82%
The month with the highest relative humidity is December (91%).
The month with the lowest relative humidity is August (76%).
Average rainfall in May
Sandweiler, Luxembourg
- Average rainfall in May: 53mm
The wettest month (with the highest rainfall) is December (61mm).
The driest month (with the least rainfall) is April (33mm).
Average rainfall days in May
Sandweiler, Luxembourg
- Average rainfall days in May: 18 days
The month with the highest number of rainy days is May (18 days).
The month with the least rainy days is February (10.8 days).
Average snowfall in May
Sandweiler, Luxembourg
- Average snowfall in May: 1mm
The month with the highest snowfall is December (71mm).
The months with the least snowfall are June, July, August and September (0mm).
Average snowfall days in May
Sandweiler, Luxembourg
- Average snowfall days in May: 0.1 days
The months with the highest number of snowfall days are January and February (7.8 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in May /
Average sunshine in May
Sandweiler, Luxembourg
- Average daylight in May: 15h and 24min
The month with the longest days is June (Average daylight: 16h and 12min).
The month with the shortest days is December (Average daylight: 8h and 12min).
- Average sunshine in May: 8h and 42min
The month with the most sunshine is July (Average sunshine: 9h and 42min).
The month with the least sunshine is December (Average sunshine: 3h and 6min).
Average sunshine days in May
Sandweiler, Luxembourg
- Average sunshine days in May: 10.5 days
The month with the most sunshine days is September (15.8 days).
The month with the least sunshine days is June (10.4 days).
Average UV index in May
Sandweiler, Luxembourg
- 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
Sandweiler, Luxembourg
- Average cloud cover in May: 45
The month with the most cloud cover is December (Cloud cover 70).
The month with the least cloud cover is August (Cloud cover 37).
Average visibility in May
Sandweiler, Luxembourg
- Average visibility in May: 8km
The months with the highest visibility are March, April, July and August (9km).
The months with the lowest visibility are January, February, May, June, September, October, November and December (8km).





