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
In September, La Chapelle-sur-Erdre experiences a minor shift in meteorological conditions with average high-temperatures marked at a pleasant 21.8°C (71.2°F), closely mirroring the climate in August. La Chapelle-sur-Erdre experiences a steady low-temperature of 12°C (53.6°F) throughout September.Humidity
The months with the lowest humidity are August and September, with an average relative humidity of 74%.Rainfall
September is the month with the least rainfall in La Chapelle-sur-Erdre. Rain falls for 8.2 days and accumulates 21mm (0.83") of precipitation.Snowfall
March, May through October and December are months without snowfall in La Chapelle-sur-Erdre.Daylight
The average length of the day in September in La Chapelle-sur-Erdre is 12h and 34min.On the first day of September in La Chapelle-sur-Erdre, sunrise is at 07:25 and sunset at 20:46. On the last day of the month, sunrise is at 08:04 and sunset at 19:47 CEST.
Sunshine
The average sunshine in September in La Chapelle-sur-Erdre is 8.1h.UV index
In La Chapelle-sur-Erdre, the average daily maximum UV index in September is 4. A UV Index reading of 3 to 5 represents a medium health hazard from unsafe exposure to UV radiation for average individuals.Note: The daily high UV index of 4 during September translates into the following recommendations:
Preventative actions are necessary - Suggestions to safeguard against sun damage are in order. The intensity of the Sun's UV radiation during midday suggests reducing time spent outdoors. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes.
Frequently asked questions
What is the temperature in September in La Chapelle-sur-Erdre?
What are the least humid months in La Chapelle-sur-Erdre?
What is the average humidity in September in La Chapelle-sur-Erdre?
What is the driest month in La Chapelle-sur-Erdre?
How much does it rain in La Chapelle-sur-Erdre in September?
When it does not snow in La Chapelle-sur-Erdre?
How many hours of daylight does La Chapelle-sur-Erdre have in September?
When is the sunrise / sunset in September in La Chapelle-sur-Erdre?
How long on average sun shines in September in La Chapelle-sur-Erdre?
What is the UV index reading in September in La Chapelle-sur-Erdre?
Average temperature in September
La Chapelle-sur-Erdre, France
- Average high temperature in September: 21.8°C
The warmest month (with the highest average high temperature) is August (24.3°C).
The month with the lowest average high temperature is January (8.9°C).
- Average low temperature in September: 12°C
The months with the highest average low temperature are July and August (14°C).
The coldest month (with the lowest average low temperature) is February (2.9°C).
Average pressure in September
La Chapelle-sur-Erdre, France
- Average pressure in September: 1018.3mbar
The month with the highest atmospheric pressure is December (1019.2mbar).
The month with the lowest atmospheric pressure is November (1013.5mbar).
Average wind speed in September
La Chapelle-sur-Erdre, France
- Average wind speed in September: 12.4km/h
The windiest month (with the highest average wind speed) is February (18km/h).
The calmest month (with the lowest average wind speed) is August (11.8km/h).
Average humidity in September
La Chapelle-sur-Erdre, France
- Average humidity in September: 74%
The months with the highest relative humidity are January and December (86%).
The months with the lowest relative humidity are August and September (74%).
Average rainfall in September
La Chapelle-sur-Erdre, France
- Average rainfall in September: 21mm
The wettest month (with the highest rainfall) is December (66mm).
The driest month (with the least rainfall) is September (21mm).
Average rainfall days in September
La Chapelle-sur-Erdre, France
- Average rainfall days in September: 8.2 days
The month with the highest number of rainy days is January (16.3 days).
The month with the least rainy days is September (8.2 days).
Average snowfall in September
La Chapelle-sur-Erdre, France
- Average snowfall in September: 0mm
The month with the highest snowfall is January (2mm).
The months with the least snowfall are March, May, June, July, August, September, October and December (0mm).
Average snowfall days in September
La Chapelle-sur-Erdre, France
- Average snowfall days in September: 0 days
The months with the highest number of snowfall days are January and February (0.5 days).
The months with the least snowfall days are March, May, June, July, August, September and October (0 days).
Average daylight in September /
Average sunshine in September
La Chapelle-sur-Erdre, 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 6min).
The month with the least sunshine is January (Average sunshine: 4h and 30min).
Average sunshine days in September
La Chapelle-sur-Erdre, France
- Average sunshine days in September: 20.2 days
The month with the most sunshine days is September (20.2 days).
The month with the least sunshine days is November (11.6 days).
Average UV index in September
La Chapelle-sur-Erdre, France
- Average UV index in September: 4
The months with the highest UV index are June, July and August (UV index 5).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in September
La Chapelle-sur-Erdre, France
- Average cloud cover in September: 34
The month with the most cloud cover is January (Cloud cover 55).
The month with the least cloud cover is September (Cloud cover 34).
Average visibility in September
La Chapelle-sur-Erdre, France
- Average visibility in September: 9km
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (9km).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (9km).
La Chapelle-sur-Erdre, France
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