May weather forecastSyren, Luxembourg
May
Weather in May
The last month of the spring, May, is a refreshing month in Syren, Luxembourg, with an average temperature ranging between max 16.7°C (62.1°F) and min 6.7°C (44.1°F).Temperature
The commencement of May records an average high-temperature of a still refreshing 16.7°C (62.1°F), barely varying from April's 14.1°C (57.4°F). An average nighttime temperature of 6.7°C (44.1°F) is witnessed in Syren throughout May.Humidity
The average relative humidity in May in Syren, Luxembourg, is 82%.Rainfall
In Syren, in May, it is raining for 18 days, with typically 53mm (2.09") of accumulated precipitation. 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 in Syren. May is the last month it regularly snows. During 0.1 snowfall days, in May, Syren aggregates 1mm (0.04") of snow. In Syren, during the entire year, snow falls for 28 days and aggregates up to 235mm (9.25") of snow.Daylight
The average length of the day in May in Syren is 15h and 23min.On the first day of the month, sunrise is at 06:11 and sunset at 20:52. On the last day of May, sunrise is at 05:33 and sunset at 21:32 CEST.
Sunshine
In May, the average sunshine is 8.7h.UV index
In May, the average daily maximum UV index is 4. A UV Index of 3 to 5 symbolizes a medium vulnerability from unprotected exposure to Sun's UV rays for average individuals.Note: A maximum high UV index of 4 in May translates into the following recommendations:
Be vigilant - A duty to shield skin and eyes from injury exists. Sun's radiation is most powerful around mid-day, so it's best to limit outdoor activities during this time. Sunglasses providing both UVA and UVB protection are non-negotiable on sunlit days. 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
Syren, 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
Syren, 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
Syren, 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
Syren, 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
Syren, 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
Syren, 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
Syren, 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
Syren, 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
Syren, 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
Syren, 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
Syren, 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
Syren, 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
Syren, 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).





