Contents
- Weather in September
- Frequently asked questions
- Average temperature in September
- Average pressure in September
- Average wind speed in September
- Average humidity in September
- Average rainfall in September
- Average rainfall days in September
- Average snowfall in September
- Average snowfall days in September
- Average daylight in September
- Average sunshine in September
- Average sunshine days in September
- Average UV index in September
- Average cloud cover in September
- Average visibility in September
September
Weather in September
Temperature
A modest decline in the average high-temperature is seen during September, decreasing from a pleasant 21.7°C (71.1°F) in August to an enjoyable 17.5°C (63.5°F). The low-temperature average for Grosbous during September stands at a chilly 8.5°C (47.3°F).Humidity
In Grosbous, the average relative humidity in September is 82%.Rainfall
In Grosbous, in September, it is raining for 13.1 days, with typically 39mm (1.54") of accumulated precipitation. In Grosbous, during the entire year, the rain falls for 190.3 days and collects up to 626mm (24.65") of precipitation.Snowfall
In Grosbous, 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 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
In September, the average sunshine in Grosbous is 7.9h.UV index
In Grosbous, the average daily maximum UV index in September is 3. A UV Index value of 3 to 5 symbolizes a medium health hazard from unsafe exposure to UV radiation for the average person.Note: An average UV index of 3 in September transforms into this advice:
Be cautious. Those with fair skin can be subjected to burns in fewer than 30 minutes. The most potent solar radiation is around mid-day, so one should minimize exposure to direct sunlight during this period. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are the temperatures in Grosbous in September?
What is the average humidity in September in Grosbous?
How much does it rain in Grosbous in September?
When it does not snow in Grosbous?
Does it snow in Grosbous in September?
What is the average length of the day in September in Grosbous?
When is the sunrise / sunset in September in Grosbous?
How long on average sun shines in September in Grosbous?
What is the UV index reading in September in Grosbous?
Average temperature in September
Grosbous, Luxembourg
- Average high temperature in September: 17.5°C
The warmest month (with the highest average high temperature) is August (21.7°C).
The month with the lowest average high temperature is January (2.7°C).
- Average low temperature in September: 8.5°C
The month with the highest average low temperature is August (11.8°C).
The coldest month (with the lowest average low temperature) is January (-1.3°C).
Average pressure in September
Grosbous, Luxembourg
- Average pressure in September: 1017.9mbar
The month with the highest atmospheric pressure is December (1018mbar).
The month with the lowest atmospheric pressure is November (1013.9mbar).
Average wind speed in September
Grosbous, Luxembourg
- Average wind speed in September: 10.3km/h
The windiest month (with the highest average wind speed) is February (15.9km/h).
The calmest month (with the lowest average wind speed) is August (9.8km/h).
Average humidity in September
Grosbous, 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 (79%).
Average rainfall in September
Grosbous, Luxembourg
- Average rainfall in September: 39mm
The wettest month (with the highest rainfall) is December (70mm).
The driest month (with the least rainfall) is April (36mm).
Average rainfall days in September
Grosbous, Luxembourg
- Average rainfall days in September: 13.1 days
The months with the highest number of rainy days are June and July (19.1 days).
The month with the least rainy days is February (12.7 days).
Average snowfall in September
Grosbous, Luxembourg
- Average snowfall in September: 0mm
The month with the highest snowfall is January (78mm).
The months with the least snowfall are June, July, August and September (0mm).
Average snowfall days in September
Grosbous, Luxembourg
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (8.3 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Grosbous, Luxembourg
- Average daylight in September: 12h and 4min
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 5min
The month with the most sunshine is July (Average sunshine: 9h and 18min).
The month with the least sunshine is December (Average sunshine: 2h and 54min).
Average sunshine days in September
Grosbous, Luxembourg
- Average sunshine days in September: 13.7 days
The month with the most sunshine days is March (14.3 days).
The month with the least sunshine days is June (8.1 days).
Average UV index in September
Grosbous, 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, March, November and December (UV index 2).
Average cloud cover in September
Grosbous, Luxembourg
- Average cloud cover in September: 43
The month with the most cloud cover is December (Cloud cover 72).
The month with the least cloud cover is August (Cloud cover 40).
Average visibility in September
Grosbous, Luxembourg
- Average visibility in September: 8km
The months with the highest visibility are March, April and August (9km).
The months with the lowest visibility are November and December (7km).
