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
The shift from August to September coincides with a small decrease in the average high-temperature, down to a still moderately hot 23.5°C (74.3°F) from 28.1°C (82.6°F). In Le Riols, September nights cool down to an average of 11.8°C (53.2°F).Humidity
The average relative humidity in September is 71%.Rainfall
The month with the least rainfall in Le Riols is September, when the rain falls for 9.4 days and typically collects 26mm (1.02") of precipitation.Snowfall
April through October are months without snowfall in Le Riols.Daylight
In September, the average length of the day is 12h and 31min.On the first day of September, sunrise is at 07:16 and sunset at 20:28. On the last day of the month, sunrise is at 07:49 and sunset at 19:34 CEST.
Sunshine
The average sunshine in September in Le Riols is 8.6h.UV index
The average daily maximum UV index in September is 4. A UV Index of 3 to 5 symbolizes a moderate threat to health from exposure to the Sun's UV rays for the average person.Note: In September, the average maximum UV index of 4 translates into the following recommendations:
Make use of precautions - Shielding skin and eyes from injury is a requirement. Limiting sun exposure during midday hours helps in reducing the harmful effects of UV radiation. Consider a wide-brim hat essential for effective sun defense covering your face, neck, and eyes.
Frequently asked questions
What are September temperatures in Le Riols?
What is the average humidity in September in Le Riols?
What is the driest month in Le Riols?
How many days does it rain in September in Le Riols?
When it does not snow in Le Riols?
How many hours of daylight does Le Riols have in September?
When is the sunrise / sunset in September in Le Riols?
How many hours of sunshine does Le Riols have in September?
How high is the UV index in September in Le Riols?
Average temperature in September
Le Riols, France
- Average high temperature in September: 23.5°C
The warmest month (with the highest average high temperature) is August (28.1°C).
The month with the lowest average high temperature is January (7.8°C).
- Average low temperature in September: 11.8°C
The month with the highest average low temperature is August (14.9°C).
The coldest month (with the lowest average low temperature) is February (1.3°C).
Average pressure in September
Le Riols, France
- Average pressure in September: 1018.2mbar
The month with the highest atmospheric pressure is December (1021.6mbar).
The month with the lowest atmospheric pressure is April (1015.4mbar).
Average wind speed in September
Le Riols, France
- Average wind speed in September: 8.2km/h
The windiest month (with the highest average wind speed) is March (11.5km/h).
The calmest months (with the lowest average wind speed) are August and September (8.2km/h).
Average humidity in September
Le Riols, France
- Average humidity in September: 71%
The months with the highest relative humidity are January, November and December (86%).
The month with the lowest relative humidity is August (65%).
Average rainfall in September
Le Riols, France
- Average rainfall in September: 26mm
The wettest month (with the highest rainfall) is May (70mm).
The driest month (with the least rainfall) is September (26mm).
Average rainfall days in September
Le Riols, France
- Average rainfall days in September: 9.4 days
The month with the highest number of rainy days is May (17.1 days).
The month with the least rainy days is September (9.4 days).
Average snowfall in September
Le Riols, France
- Average snowfall in September: 0mm
The months with the highest snowfall are January and February (11mm).
The months with the least snowfall are April, May, June, July, August, September and October (0mm).
Average snowfall days in September
Le Riols, France
- Average snowfall days in September: 0 days
The months with the highest number of snowfall days are January and February (2.3 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
Le Riols, France
- Average daylight in September: 12h and 3min
The month with the longest days is June (Average daylight: 15h and 24min).
The month with the shortest days is December (Average daylight: 8h and 54min).
- Average sunshine in September: 8h and 4min
The month with the most sunshine is July (Average sunshine: 10h and 18min).
The month with the least sunshine is January (Average sunshine: 4h and 30min).
Average sunshine days in September
Le Riols, France
- Average sunshine days in September: 18.1 days
The month with the most sunshine days is September (18.1 days).
The month with the least sunshine days is May (10.6 days).
Average UV index in September
Le Riols, France
- Average UV index in September: 4
The months with the highest UV index are June and July (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in September
Le Riols, France
- Average cloud cover in September: 31
The month with the most cloud cover is January (Cloud cover 56).
The month with the least cloud cover is August (Cloud cover 25).
Average visibility in September
Le Riols, France
- Average visibility in September: 9km
The months with the highest visibility are June, July, August, September and October (9km).
The months with the lowest visibility are January, February, March, April, May, November and December (8km).
Le Riols, France
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