September weather forecastErmsdorf, Luxembourg
September
Weather in September
Come September, Ermsdorf starts to experience gradual cooling, indicating the onset of autumn. The month is characterized by temperate days, as summer's warmth slowly ebbs away. The rainfall levels recede to 35mm (1.38"), making September less humid than the previous month. As the hours of daylight shorten, evening walks become more pleasant. Outdoor enthusiasts relish this climatic mix of warmth during the day and crisp air during the evening.Temperature
With the onset of September, Ermsdorf's climate undergoes a slight change as the average high-temperature moves from a pleasant 22.6°C (72.7°F) in August to an enjoyable 18.5°C (65.3°F). In Ermsdorf, the nighttime temperature averages to a chilly 9°C (48.2°F) during September.Humidity
In September, the average relative humidity is 80%.Rainfall
In Ermsdorf, during September, the rain falls for 11.3 days and regularly aggregates up to 35mm (1.38") of precipitation. Throughout the year, there are 171.5 rainfall days, and 545mm (21.46") of precipitation is accumulated.Snowfall
In Ermsdorf, snow does not fall in June through September.Daylight
In September, the average length of the day is 12h and 37min.On the first day of the month, sunrise is at 06:51 and sunset at 20:18. On the last day of September, in Ermsdorf, sunrise is at 07:34 and sunset at 19:15 CEST.
Sunshine
In Ermsdorf, the average sunshine in September is 8.1h.UV index
The average daily maximum UV index in September in Ermsdorf is 3. A UV Index estimate of 3 to 5 represents a moderate health risk from unsafe exposure to UV radiation for the ordinary person.Note: The daily maximum UV index of 3 in September interprets into the following advice:
Preventative actions are necessary - The mandate to avoid skin and eye damage is in place. Considering the Sun's intensity during midday, it's wise to minimize direct exposure. For a sun-safe wardrobe, go for clothes that are tightly woven and generously sized.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Ermsdorf, Luxembourg
- Average high temperature in September: 18.5°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 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 (-1.2°C).
Average pressure in September
Ermsdorf, Luxembourg
- Average pressure in September: 1017.9mbar
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 September
Ermsdorf, Luxembourg
- Average wind speed in September: 10.1km/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 September
Ermsdorf, Luxembourg
- Average humidity in September: 80%
The month with the highest relative humidity is December (91%).
The month with the lowest relative humidity is August (76%).
Average rainfall in September
Ermsdorf, Luxembourg
- Average rainfall in September: 35mm
The wettest month (with the highest rainfall) is December (61mm).
The driest month (with the least rainfall) is April (33mm).
Average rainfall days in September
Ermsdorf, Luxembourg
- Average rainfall days in September: 11.3 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 September
Ermsdorf, Luxembourg
- Average snowfall in September: 0mm
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 September
Ermsdorf, Luxembourg
- Average snowfall days in September: 0 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 September /
Average sunshine in September
Ermsdorf, Luxembourg
- Average daylight in September: 12h and 36min
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 September: 8h and 6min
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 September
Ermsdorf, Luxembourg
- Average sunshine days in September: 15.8 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 September
Ermsdorf, Luxembourg
- Average UV index in September: 3
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 September
Ermsdorf, Luxembourg
- Average cloud cover in September: 40
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 September
Ermsdorf, Luxembourg
- Average visibility in September: 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).
