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 onset of September entails a subtle temperature shift, as the average high-temperature eases from a moderately hot 24.9°C (76.8°F) in August to an agreeable 20.3°C (68.5°F). Throughout September, the temperature tends to fall to a consistent average low of 9.9°C (49.8°F).Humidity
In September, the average relative humidity is 77%.Rainfall
In Rive-de-Gier, in September, during 11 rainfall days, 28mm (1.1") of precipitation is typically accumulated. In Rive-de-Gier, during the entire year, the rain falls for 153.4 days and collects up to 511mm (20.12") of precipitation.Snowfall
June through September are months without snowfall in Rive-de-Gier.Daylight
The average length of the day in September in Rive-de-Gier is 12h and 32min.On the first day of September, sunrise is at 07:03 and sunset at 20:19. On the last day of the month, sunrise is at 07:39 and sunset at 19:23 CEST.
Sunshine
In September, the average sunshine is 8.1h.UV index
The average daily maximum UV index in September in Rive-de-Gier is 4. A UV Index reading of 3 to 5 represents a moderate health risk from unprotected exposure to Sun's UV rays for the ordinary person.Note: A maximum UV index of 4 in September translates into the following recommendations:
Act with care - Obligation to protect against skin and eye damage is highlighted. The mid-day Sun emits the most powerful UV radiation, so seek shade and minimize exposure. Fend off the sun's harsh rays with appropriate clothing, a wide-brim hat, and UV-protective sunglasses.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are the temperatures in Rive-de-Gier in September?
What is the average humidity in September in Rive-de-Gier?
How much does it rain in Rive-de-Gier in September?
When it does not snow in Rive-de-Gier?
Does it snow in Rive-de-Gier in September?
How many hours of daylight does Rive-de-Gier have in September?
What time are sunrise and sunset in September in Rive-de-Gier?
How many hours of sunshine does Rive-de-Gier have in September?
What is the UV index reading in September in Rive-de-Gier?
Average temperature in September
Rive-de-Gier, France
- Average high temperature in September: 20.3°C
The warmest month (with the highest average high temperature) is August (24.9°C).
The month with the lowest average high temperature is January (4.8°C).
- Average low temperature in September: 9.9°C
The month with the highest average low temperature is July (13.2°C).
The coldest month (with the lowest average low temperature) is February (-1°C).
Average pressure in September
Rive-de-Gier, France
- Average pressure in September: 1018.4mbar
The month with the highest atmospheric pressure is December (1021.3mbar).
The month with the lowest atmospheric pressure is April (1015.4mbar).
Average wind speed in September
Rive-de-Gier, France
- Average wind speed in September: 9.1km/h
The windiest month (with the highest average wind speed) is February (12.5km/h).
The calmest month (with the lowest average wind speed) is August (8.7km/h).
Average humidity in September
Rive-de-Gier, France
- Average humidity in September: 77%
The months with the highest relative humidity are November and December (86%).
The month with the lowest relative humidity is August (72%).
Average rainfall in September
Rive-de-Gier, France
- Average rainfall in September: 28mm
The wettest month (with the highest rainfall) is November (58mm).
The driest month (with the least rainfall) is February (27mm).
Average rainfall days in September
Rive-de-Gier, France
- Average rainfall days in September: 11 days
The month with the highest number of rainy days is May (17.4 days).
The month with the least rainy days is December (10 days).
Average snowfall in September
Rive-de-Gier, France
- Average snowfall in September: 0mm
The month with the highest snowfall is November (85mm).
The months with the least snowfall are June, July, August and September (0mm).
Average snowfall days in September
Rive-de-Gier, France
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (8.5 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Rive-de-Gier, 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 1min
The month with the most sunshine is August (Average sunshine: 10h and 18min).
The month with the least sunshine is January (Average sunshine: 4h and 6min).
Average sunshine days in September
Rive-de-Gier, France
- Average sunshine days in September: 16.3 days
The month with the most sunshine days is August (18.3 days).
The month with the least sunshine days is May (10.2 days).
Average UV index in September
Rive-de-Gier, 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
Rive-de-Gier, France
- Average cloud cover in September: 38
The month with the most cloud cover is January (Cloud cover 61).
The month with the least cloud cover is August (Cloud cover 29).
Average visibility in September
Rive-de-Gier, France
- Average visibility in September: 8km
The months with the highest visibility are March, April, July and August (9km).
The months with the lowest visibility are January, February, May, June, September, October, November and December (8km).
