September weather forecastKnaphoscheid, Luxembourg
September
Weather in September
The first month of the autumn, September, is also an enjoyable month in Knaphoscheid, Luxembourg, with an average temperature varying between 8.1°C (46.6°F) and 17.5°C (63.5°F).Temperature
With the beginning of September, the average high-temperature shows a small decrease, transitioning from an agreeable 20.9°C (69.6°F) in August to a comfortable 17.5°C (63.5°F). In Knaphoscheid, the average low-temperature during the month of September is a chilly 8.1°C (46.6°F).Humidity
In Knaphoscheid, the average relative humidity in September is 83%.Rainfall
In Knaphoscheid, in September, it is raining for 14.5 days, with typically 44mm (1.73") of accumulated precipitation. In Knaphoscheid, Luxembourg, during the entire year, the rain falls for 189.8 days and collects up to 651mm (25.63") of precipitation.Snowfall
In Knaphoscheid, snow does not fall in June through September.Daylight
The average length of the day in September is 12h and 37min.On the first day of September, 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 Knaphoscheid, Luxembourg, is 7.1h.UV index
In Knaphoscheid, the average daily maximum UV index in September is 3. A UV Index reading of 3 to 5 represents a moderate threat to health from exposure to the Sun's UV radiation for ordinary individuals.Note: The UV index of 3 during September translates into the following guidance:
Act with care - The suggestion to avoid sunburn is emphasized. Avoid the Sun's strongest UV rays by seeking shade and limiting exposure during midday. Outfit yourself in sun-safe attire, like long sleeves, pants, a hat, and UV-blocking sunglasses.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Knaphoscheid, Luxembourg
- Average high temperature in September: 17.5°C
The warmest month (with the highest average high temperature) is August (20.9°C).
The month with the lowest average high temperature is January (2.5°C).
- Average low temperature in September: 8.1°C
The months with the highest average low temperature are July and August (11.1°C).
The coldest months (with the lowest average low temperature) are January and February (-1.8°C).
Average pressure in September
Knaphoscheid, Luxembourg
- Average pressure in September: 1017.7mbar
The month with the highest atmospheric pressure is December (1017.8mbar).
The month with the lowest atmospheric pressure is November (1013.8mbar).
Average wind speed in September
Knaphoscheid, Luxembourg
- Average wind speed in September: 10.5km/h
The windiest month (with the highest average wind speed) is February (16.2km/h).
The calmest month (with the lowest average wind speed) is August (10km/h).
Average humidity in September
Knaphoscheid, Luxembourg
- Average humidity in September: 83%
The month with the highest relative humidity is December (93%).
The month with the lowest relative humidity is April (79%).
Average rainfall in September
Knaphoscheid, Luxembourg
- Average rainfall in September: 44mm
The wettest month (with the highest rainfall) is December (76mm).
The driest month (with the least rainfall) is April (37mm).
Average rainfall days in September
Knaphoscheid, Luxembourg
- Average rainfall days in September: 14.5 days
The month with the highest number of rainy days is July (19.6 days).
The month with the least rainy days is February (11.1 days).
Average snowfall in September
Knaphoscheid, Luxembourg
- Average snowfall in September: 0mm
The month with the highest snowfall is February (90mm).
The months with the least snowfall are June, July, August and September (0mm).
Average snowfall days in September
Knaphoscheid, Luxembourg
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (9.7 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Knaphoscheid, 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: 7h and 6min
The month with the most sunshine is July (Average sunshine: 8h and 42min).
The month with the least sunshine is December (Average sunshine: 2h and 36min).
Average sunshine days in September
Knaphoscheid, Luxembourg
- Average sunshine days in September: 12.8 days
The month with the most sunshine days is September (12.8 days).
The month with the least sunshine days is June (7.2 days).
Average UV index in September
Knaphoscheid, 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, October, November and December (UV index 2).
Average cloud cover in September
Knaphoscheid, Luxembourg
- Average cloud cover in September: 48
The month with the most cloud cover is December (Cloud cover 76).
The month with the least cloud cover is August (Cloud cover 44).
Average visibility in September
Knaphoscheid, Luxembourg
- Average visibility in September: 8km
The month with the highest visibility is April (9km).
The months with the lowest visibility are January, October, November and December (7km).
