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
The shift from August to September coincides with a small decrease in the average high-temperature, down to an agreeable 21.5°C (70.7°F) from a warm 26°C (78.8°F). Nightly temperatures in La Chapelle-de-Surieu, France, drop to an average low of 11.1°C (52°F) in September.Humidity
In September, the average relative humidity in La Chapelle-de-Surieu is 76%.Rainfall
In La Chapelle-de-Surieu, in September, it is raining for 10.2 days, with typically 31mm (1.22") of accumulated precipitation. In La Chapelle-de-Surieu, during the entire year, the rain falls for 151.5 days and collects up to 504mm (19.84") of precipitation.Snowfall
April through September are months without snowfall.Daylight
In La Chapelle-de-Surieu, the average length of the day in September is 12h and 32min.On the first day of September, sunrise is at 07:02 and sunset at 20:17. On the last day of the month, sunrise is at 07:37 and sunset at 19:22 CEST.
Sunshine
In September, the average sunshine in La Chapelle-de-Surieu is 8.3h.UV index
In September, the average daily maximum UV index is 4. 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 maximum daily UV index, 4 in September, converts into the following recommendations:
Take necessary precautions - Defending against sun damage is advocated. It's recommended to limit sun exposure when its radiation is at its peak during midday. Wearing sunglasses with both UVA and UVB protection effectively reduces sun-induced eye damage.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are the temperatures in La Chapelle-de-Surieu in September?
What is the average humidity in September in La Chapelle-de-Surieu?
How many days does it rain in September in La Chapelle-de-Surieu?
When it does not snow in La Chapelle-de-Surieu?
Does it snow in La Chapelle-de-Surieu in September?
How many hours of daylight does La Chapelle-de-Surieu have in September?
When are sunrise and sunset in September in La Chapelle-de-Surieu?
How long on average sun shines in September in La Chapelle-de-Surieu?
What is the UV index reading in September in La Chapelle-de-Surieu?
Average temperature in September
La Chapelle-de-Surieu, France
- Average high temperature in September: 21.5°C
The warmest month (with the highest average high temperature) is August (26°C).
The month with the lowest average high temperature is January (5.3°C).
- Average low temperature in September: 11.1°C
The month with the highest average low temperature is July (14.4°C).
The coldest months (with the lowest average low temperature) are January and February (0.2°C).
Average pressure in September
La Chapelle-de-Surieu, France
- Average pressure in September: 1018.4mbar
The month with the highest atmospheric pressure is December (1021.2mbar).
The month with the lowest atmospheric pressure is April (1015.3mbar).
Average wind speed in September
La Chapelle-de-Surieu, France
- Average wind speed in September: 9.2km/h
The windiest month (with the highest average wind speed) is February (12.6km/h).
The calmest month (with the lowest average wind speed) is September (9.2km/h).
Average humidity in September
La Chapelle-de-Surieu, France
- Average humidity in September: 76%
The month with the highest relative humidity is December (86%).
The month with the lowest relative humidity is August (71%).
Average rainfall in September
La Chapelle-de-Surieu, France
- Average rainfall in September: 31mm
The wettest month (with the highest rainfall) is November (56mm).
The driest month (with the least rainfall) is February (25mm).
Average rainfall days in September
La Chapelle-de-Surieu, France
- Average rainfall days in September: 10.2 days
The month with the highest number of rainy days is May (15.8 days).
The month with the least rainy days is September (10.2 days).
Average snowfall in September
La Chapelle-de-Surieu, France
- Average snowfall in September: 0mm
The month with the highest snowfall is November (79mm).
The months with the least snowfall are April, May, June, July, August and September (0mm).
Average snowfall days in September
La Chapelle-de-Surieu, France
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (6.2 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
La Chapelle-de-Surieu, France
- Average daylight in September: 12h and 3min
The month with the longest days is June (Average daylight: 15h and 36min).
The month with the shortest days is December (Average daylight: 8h and 48min).
- Average sunshine in September: 8h and 2min
The month with the most sunshine is August (Average sunshine: 10h and 42min).
The month with the least sunshine is January (Average sunshine: 4h and 24min).
Average sunshine days in September
La Chapelle-de-Surieu, France
- Average sunshine days in September: 16.5 days
The month with the most sunshine days is August (17.4 days).
The month with the least sunshine days is May (12.3 days).
Average UV index in September
La Chapelle-de-Surieu, France
- Average UV index in September: 4
The month with the highest UV index is June (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in September
La Chapelle-de-Surieu, France
- Average cloud cover in September: 35
The month with the most cloud cover is January (Cloud cover 58).
The month with the least cloud cover is August (Cloud cover 25).
Average visibility in September
La Chapelle-de-Surieu, France
- Average visibility in September: 8km
The months with the highest visibility are February, March, April, May, June, July and August (9km).
The months with the lowest visibility are January, September, October, November and December (8km).
