September weather forecastSchouweiler, Luxembourg
September
Weather in September
The coming of September brings milder weather, marking the shift from summer to fall in Schouweiler. With an appreciable drop in temperature from 21.8°C (71.2°F) in August to 18°C (64.4°F), September ushers in the fall season. The diminishing heat levels are balanced by progressively shorter daylight hours; nevertheless, residents continue enjoying outdoor activities. The city starts to turn gold with the onset of autumn leaves, adding a layer of charm to the existing beauty.Temperature
The transition to September results in a modest reduction in average high-temperature, moving from a pleasant 21.8°C (71.2°F) in August to a refreshing 18°C (64.4°F). In September, Schouweiler records an average nighttime temperature of 9°C (48.2°F).Humidity
In Schouweiler, the average relative humidity in September is 82%.Rainfall
In Schouweiler, Luxembourg, during September, the rain falls for 12.9 days and regularly aggregates up to 40mm (1.57") of precipitation. In Schouweiler, during the entire year, the rain falls for 179.7 days and collects up to 616mm (24.25") of precipitation.Snowfall
June through September are months without snowfall in Schouweiler.Daylight
In Schouweiler, the average length of the day in September is 12h and 36min.On the first day of September in Schouweiler, sunrise is at 06:52 and sunset at 20:19. On the last day of the month, sunrise is at 07:35 and sunset at 19:16 CEST.
Sunshine
The average sunshine in September in Schouweiler is 7.9h.UV index
The average daily maximum UV index in September is 3. A UV Index value of 3 to 5 symbolizes a medium health hazard from exposure to the Sun's UV radiation for ordinary individuals.Note: The UV index of 3 in September translates into these instructions:
Make use of precautions - It is urged to ward off sun damage. To prevent harmful UV exposure, minimize direct contact with the Sun around midday. 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
Average temperature in September
Schouweiler, Luxembourg
- Average high temperature in September: 18°C
The warmest months (with the highest average high temperature) are July and August (21.8°C).
The month with the lowest average high temperature is January (3°C).
- Average low temperature in September: 9°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 (-1.1°C).
Average pressure in September
Schouweiler, Luxembourg
- Average pressure in September: 1017.9mbar
The month with the highest atmospheric pressure is December (1018.1mbar).
The month with the lowest atmospheric pressure is November (1013.9mbar).
Average wind speed in September
Schouweiler, Luxembourg
- Average wind speed in September: 10.4km/h
The windiest month (with the highest average wind speed) is February (16km/h).
The calmest month (with the lowest average wind speed) is August (9.8km/h).
Average humidity in September
Schouweiler, Luxembourg
- Average humidity in September: 82%
The month with the highest relative humidity is December (92%).
The months with the lowest relative humidity are April and August (78%).
Average rainfall in September
Schouweiler, Luxembourg
- Average rainfall in September: 40mm
The wettest month (with the highest rainfall) is December (73mm).
The driest month (with the least rainfall) is April (34mm).
Average rainfall days in September
Schouweiler, Luxembourg
- Average rainfall days in September: 12.9 days
The month with the highest number of rainy days is July (18 days).
The month with the least rainy days is February (11.6 days).
Average snowfall in September
Schouweiler, Luxembourg
- Average snowfall in September: 0mm
The months with the highest snowfall are January and December (80mm).
The months with the least snowfall are June, July, August and September (0mm).
Average snowfall days in September
Schouweiler, Luxembourg
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (9.8 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Schouweiler, Luxembourg
- Average daylight in September: 12h and 36min
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: 7h and 54min
The month with the most sunshine is July (Average sunshine: 9h and 24min).
The month with the least sunshine is December (Average sunshine: 3h and 0min).
Average sunshine days in September
Schouweiler, Luxembourg
- Average sunshine days in September: 14.7 days
The months with the most sunshine days are April and September (14.7 days).
The month with the least sunshine days is December (9 days).
Average UV index in September
Schouweiler, Luxembourg
- Average UV index in September: 3
The month with the highest UV index is July (UV index 5).
The months with the lowest UV index are January, February, March, November and December (UV index 2).
Average cloud cover in September
Schouweiler, Luxembourg
- Average cloud cover in September: 42
The month with the most cloud cover is December (Cloud cover 71).
The month with the least cloud cover is August (Cloud cover 39).
Average visibility in September
Schouweiler, Luxembourg
- Average visibility in September: 8km
The months with the highest visibility are March, April and August (9km).
The month with the lowest visibility is November (7km).





