Weather in September
Temperature
Luxembourg City records a mild change in average high-temperature during September, easing from an agreeable 22.8°C (73°F) in August to a refreshing 18.4°C (65.1°F). The month of September records an average low-temperature of 10°C (50°F) in Luxembourg City.Humidity
The average relative humidity in September is 76%.Rainfall
In September, the rain falls for 12.6 days. Throughout September, 76mm (2.99") of precipitation is accumulated. Throughout the year, in Luxembourg City, there are 182.3 rainfall days, and 897mm (35.31") of precipitation is accumulated.Daylight
The average length of the day in September in Luxembourg City, Luxembourg, is 12h and 36min.On the first day of the month, sunrise is at 06:51 and sunset at 20:18. On the last day of September, in Luxembourg City, sunrise is at 07:34 and sunset at 19:15 CEST.
Sunshine
In September, the average sunshine in Luxembourg City is 5.4h.UV index
In Luxembourg City, the average daily maximum UV index in September is 4. A UV Index estimate of 3 to 5 represents a medium vulnerability from exposure to the Sun's UV radiation for ordinary individuals.Note: The UV index of 4 during September leads to these advisories:
Undertake precautions - Guarding against sun damage is counselled. The solar radiation around mid-day is intense; avoid the Sun and stay safe. For minimizing sun-related eye damage, always choose sunglasses with UVA and UVB coverage.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the average September temperature in Luxembourg City?
What is the average humidity in September in Luxembourg City?
How much does it rain in Luxembourg City in September?
How many hours of daylight does Luxembourg City have in September?
What time are sunrise and sunset in September in Luxembourg City?
How many hours of sunshine does Luxembourg City have in September?
What is the UV index reading in September in Luxembourg City?
Average temperature in September
Luxembourg City, Luxembourg
- Average high temperature in September: 18.4°C
The warmest month (with the highest average high temperature) is July (23.2°C).
The month with the lowest average high temperature is January (3.1°C).
- Average low temperature in September: 10°C
The month with the highest average low temperature is July (13.3°C).
The coldest month (with the lowest average low temperature) is January (-1.6°C).
Average humidity in September
Luxembourg City, Luxembourg
- Average humidity in September: 76%
The months with the highest relative humidity are November and December (88%).
The month with the lowest relative humidity is July (67%).
Average rainfall in September
Luxembourg City, Luxembourg
- Average rainfall in September: 76.3mm
The wettest month (with the highest rainfall) is October (86.8mm).
The driest month (with the least rainfall) is April (58.2mm).
Average rainfall days in September
Luxembourg City, Luxembourg
- Average rainfall days in September: 12.6 days
The month with the highest number of rainy days is January (18.3 days).
The month with the least rainy days is July (12.5 days).
Average daylight in September /
Average sunshine in September
Luxembourg City, Luxembourg
- Average daylight in September: 12h and 4min
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 September: 5h and 2min
The month with the most sunshine is July (Average sunshine: 8h and 6min).
The month with the least sunshine is December (Average sunshine: 1h and 18min).
Average UV index in September
Luxembourg City, Luxembourg
- Average UV index in September: 4
The months with the highest UV index are June and July (UV index 7).
The months with the lowest UV index are January, February, November and December (UV index 1).
Luxembourg City, Luxembourg
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