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
Weather in September
Temperature
September ushers in an average high-temperature of a still pleasant 20.7°C (69.3°F), aligning closely with the preceding month. During the month of September, the temperature falls to an average of 12.9°C (55.2°F).Humidity
July through September, with an average relative humidity of 76%, are the least humid months in La Chapelle-Launay.Rainfall
In September, in La Chapelle-Launay, France, the rain falls for 9.7 days. Throughout September, 23mm (0.91") of precipitation is accumulated. Throughout the year, there are 164.1 rainfall days, and 535mm (21.06") of precipitation is accumulated.Snowfall
In La Chapelle-Launay, France, snow does not fall in March, May through October.Daylight
In September, the average length of the day in La Chapelle-Launay is 12h and 34min.On the first day of September in La Chapelle-Launay, sunrise is at 07:27 and sunset at 20:47. On the last day of the month, sunrise is at 08:06 and sunset at 19:49 CEST.
Sunshine
In September, the average sunshine is 8.1h.UV index
The average daily maximum UV index in September in La Chapelle-Launay is 4. A UV Index estimate of 3 to 5 represents a medium health hazard from exposure to the Sun's UV radiation for average individuals.Note: A maximum high UV index of 4 in September translates into the following recommendations:
Put precautions into practice - Guidance to elude sunburn is provided. Stay safe from the Sun's strongest UV rays by limiting exposure during midday. Equip yourself with UVA and UVB-filtering sunglasses on clear, sunny days.
Frequently asked questions
What are September temperatures in La Chapelle-Launay?
What is the least humid month in La Chapelle-Launay?
What is the average humidity in September in La Chapelle-Launay?
How many days does it rain in September in La Chapelle-Launay?
When it does not snow in La Chapelle-Launay?
How many hours of daylight does La Chapelle-Launay have in September?
When are sunrise and sunset in September in La Chapelle-Launay?
How many hours of sunshine does La Chapelle-Launay have in September?
How high is the UV index in September in La Chapelle-Launay?
Average temperature in September
La Chapelle-Launay, France
- Average high temperature in September: 20.7°C
The warmest month (with the highest average high temperature) is July (22.6°C).
The month with the lowest average high temperature is January (9.3°C).
- Average low temperature in September: 12.9°C
The months with the highest average low temperature are July and August (14.8°C).
The coldest month (with the lowest average low temperature) is February (4.3°C).
Average pressure in September
La Chapelle-Launay, France
- Average pressure in September: 1018.4mbar
The month with the highest atmospheric pressure is December (1019mbar).
The month with the lowest atmospheric pressure is November (1013.3mbar).
Average wind speed in September
La Chapelle-Launay, France
- Average wind speed in September: 14.8km/h
The windiest month (with the highest average wind speed) is February (21.1km/h).
The calmest month (with the lowest average wind speed) is August (14.1km/h).
Average humidity in September
La Chapelle-Launay, France
- Average humidity in September: 76%
The month with the highest relative humidity is January (84%).
The months with the lowest relative humidity are July, August and September (76%).
Average rainfall in September
La Chapelle-Launay, France
- Average rainfall in September: 23mm
The wettest month (with the highest rainfall) is December (77mm).
The driest month (with the least rainfall) is July (22mm).
Average rainfall days in September
La Chapelle-Launay, France
- Average rainfall days in September: 9.7 days
The month with the highest number of rainy days is January (18.1 days).
The month with the least rainy days is September (9.7 days).
Average snowfall in September
La Chapelle-Launay, France
- Average snowfall in September: 0mm
The months with the highest snowfall are January, February, April, November and December (1mm).
The months with the least snowfall are March, May, June, July, August, September and October (0mm).
Average snowfall days in September
La Chapelle-Launay, France
- Average snowfall days in September: 0 days
The months with the highest number of snowfall days are January and February (0.3 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).
Average daylight in September /
Average sunshine in September
La Chapelle-Launay, France
- Average daylight in September: 12h and 4min
The month with the longest days is June (Average daylight: 15h and 54min).
The month with the shortest days is December (Average daylight: 8h and 30min).
- Average sunshine in September: 8h and 1min
The month with the most sunshine is July (Average sunshine: 10h and 42min).
The month with the least sunshine is January (Average sunshine: 4h and 30min).
Average sunshine days in September
La Chapelle-Launay, France
- Average sunshine days in September: 17.9 days
The month with the most sunshine days is September (17.9 days).
The month with the least sunshine days is November (10.5 days).
Average UV index in September
La Chapelle-Launay, France
- Average UV index in September: 4
The months with the highest UV index are May, June, July and August (UV index 5).
The month with the lowest UV index is January (UV index 2).
Average cloud cover in September
La Chapelle-Launay, France
- Average cloud cover in September: 31
The month with the most cloud cover is January (Cloud cover 55).
The month with the least cloud cover is September (Cloud cover 31).
Average visibility in September
La Chapelle-Launay, France
- Average visibility in September: 10km
The months with the highest visibility are February, March, April, May, June, July, August, September, October, November and December (10km).
The month with the lowest visibility is January (9km).
La Chapelle-Launay, France
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