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
La Roche-sur-Yon, France, records an average high-temperature of an agreeable 22.2°C (72°F) in September, closely mirroring the climate of the previous month. Throughout the nights in September, an average low-temperature of 12.7°C (54.9°F) is noted in La Roche-sur-Yon.Humidity
The months with the lowest humidity are August and September, with an average relative humidity of 72%.Rainfall
In La Roche-sur-Yon, in September, it is raining for 8.4 days, with typically 24mm (0.94") of accumulated precipitation. In La Roche-sur-Yon, during the entire year, the rain falls for 151.1 days and collects up to 468mm (18.43") of precipitation.Snowfall
April through November are months without snowfall in La Roche-sur-Yon.Daylight
In La Roche-sur-Yon, the average length of the day in September is 12h and 33min.On the first day of September, sunrise is at 07:26 and sunset at 20:44. On the last day of the month, sunrise is at 08:03 and sunset at 19:47 CEST.
Sunshine
In La Roche-sur-Yon, France, the average sunshine in September is 8.2h.UV index
May through September, with an average maximum UV index of 5, are months with the highest UV index. A UV Index value of 3 to 5 symbolizes a moderate health risk from exposure to the Sun's UV rays for the ordinary person.Note: During September, 5 as the daily maximum UV index converts into the following advice:
Put precautions into practice - Guidance to elude sunburn is provided. The midday Sun can be dangerous due to its intense radiation; always find shade and reduce exposure. Enhance your sun protection with tightly woven, yet airy clothing.
Frequently asked questions
What is the average September temperature in La Roche-sur-Yon?
What are the least humid months in La Roche-sur-Yon?
What is the average humidity in September in La Roche-sur-Yon?
How many days does it rain in September in La Roche-sur-Yon?
When it does not snow in La Roche-sur-Yon?
What is the average length of the day in September in La Roche-sur-Yon?
When are sunrise and sunset in September in La Roche-sur-Yon?
How many hours of sunshine does La Roche-sur-Yon have in September?
When is the highest UV index in La Roche-sur-Yon?
How high is the UV index in September in La Roche-sur-Yon?
Average temperature in September
La Roche-sur-Yon, France
- Average high temperature in September: 22.2°C
The warmest month (with the highest average high temperature) is August (24.5°C).
The month with the lowest average high temperature is January (8.9°C).
- Average low temperature in September: 12.7°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 (3.2°C).
Average pressure in September
La Roche-sur-Yon, France
- Average pressure in September: 1018.2mbar
The month with the highest atmospheric pressure is December (1019.6mbar).
The month with the lowest atmospheric pressure is November (1013.7mbar).
Average wind speed in September
La Roche-sur-Yon, France
- Average wind speed in September: 12.7km/h
The windiest month (with the highest average wind speed) is February (18.3km/h).
The calmest month (with the lowest average wind speed) is August (12km/h).
Average humidity in September
La Roche-sur-Yon, France
- Average humidity in September: 72%
The months with the highest relative humidity are January and December (85%).
The months with the lowest relative humidity are August and September (72%).
Average rainfall in September
La Roche-sur-Yon, France
- Average rainfall in September: 24mm
The wettest month (with the highest rainfall) is November (62mm).
The driest months (with the least rainfall) are July and August (23mm).
Average rainfall days in September
La Roche-sur-Yon, France
- Average rainfall days in September: 8.4 days
The month with the highest number of rainy days is November (15 days).
The month with the least rainy days is September (8.4 days).
Average snowfall in September
La Roche-sur-Yon, France
- Average snowfall in September: 0mm
The month with the highest snowfall is January (5mm).
The months with the least snowfall are April, May, June, July, August, September, October and November (0mm).
Average snowfall days in September
La Roche-sur-Yon, France
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (0.9 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 Roche-sur-Yon, France
- Average daylight in September: 12h and 3min
The month with the longest days is June (Average daylight: 15h and 48min).
The month with the shortest days is December (Average daylight: 8h and 36min).
- Average sunshine in September: 8h and 1min
The month with the most sunshine is July (Average sunshine: 10h and 6min).
The months with the least sunshine are January and December (Average sunshine: 4h and 42min).
Average sunshine days in September
La Roche-sur-Yon, France
- Average sunshine days in September: 20.6 days
The month with the most sunshine days is September (20.6 days).
The month with the least sunshine days is February (13 days).
Average UV index in September
La Roche-sur-Yon, France
- Average UV index in September: 5
The months with the highest UV index are May, June, July, August and September (UV index 5).
The months with the lowest UV index are January and February (UV index 2).
Average cloud cover in September
La Roche-sur-Yon, France
- Average cloud cover in September: 32
The month with the most cloud cover is January (Cloud cover 54).
The months with the least cloud cover are August and September (Cloud cover 32).
Average visibility in September
La Roche-sur-Yon, 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 Roche-sur-Yon, France
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