September weather forecastRedon, France
September
Weather in September
September, the first month of the autumn in Redon, is still a pleasant month, with an average temperature varying between 20.7°C (69.3°F) and 12.9°C (55.2°F).Temperature
As Redon welcomes September, the average high-temperature records at a still pleasant 20.7°C (69.3°F), marking an insignificant deviation from the prior month. Throughout September, Redon encounters an average temperature drop to a fresh 12.9°C (55.2°F).Humidity
July through September, with an average relative humidity of 76%, are the least humid months in Redon, France.Rainfall
In Redon, in September, during 9.7 rainfall days, 23mm (0.91") of precipitation is typically accumulated. In Redon, during the entire year, the rain falls for 164.1 days and collects up to 535mm (21.06") of precipitation.Snowfall
In Redon, snow does not fall in March, May through October.Daylight
In September, the average length of the day is 12h and 34min.On the first day of the month, sunrise is at 07:27 and sunset at 20:48. On the last day of September, sunrise is at 08:06 and sunset at 19:49 CEST.
Sunshine
In September, the average sunshine in Redon, France, is 8.1h.UV index
The average daily maximum UV index in September is 4. A UV Index reading of 3 to 5 represents a moderate threat to health from unsafe exposure to UV radiation for the ordinary person.Note: A maximum UV index of 4 in September translates into the following recommendations:
Act with care - The need to guard against sun damage is communicated. To prevent harmful UV exposure, minimize direct contact with the Sun around midday. A hat with a broad brim is indispensable, filtering out up to half of UV rays.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Redon, France
- Average high temperature in September: 20.7°C
The warmest month (with the highest average high temperature) is July (22.6°C).
The month with the lowest average high temperature is January (9.3°C).
- Average low temperature in September: 12.9°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 (4.3°C).
Average pressure in September
Redon, France
- Average pressure in September: 1018.4mbar
The month with the highest atmospheric pressure is December (1019mbar).
The month with the lowest atmospheric pressure is November (1013.3mbar).
Average wind speed in September
Redon, France
- Average wind speed in September: 14.8km/h
The windiest month (with the highest average wind speed) is February (21.1km/h).
The calmest month (with the lowest average wind speed) is August (14.1km/h).
Average humidity in September
Redon, France
- Average humidity in September: 76%
The month with the highest relative humidity is January (84%).
The months with the lowest relative humidity are July, August and September (76%).
Average rainfall in September
Redon, France
- Average rainfall in September: 23mm
The wettest month (with the highest rainfall) is December (77mm).
The driest month (with the least rainfall) is July (22mm).
Average rainfall days in September
Redon, France
- Average rainfall days in September: 9.7 days
The month with the highest number of rainy days is January (18.1 days).
The month with the least rainy days is September (9.7 days).
Average snowfall in September
Redon, France
- Average snowfall in September: 0mm
The months with the highest snowfall are January, February, April, November and December (1mm).
The months with the least snowfall are March, May, June, July, August, September and October (0mm).
Average snowfall days in September
Redon, France
- Average snowfall days in September: 0 days
The months with the highest number of snowfall days are January and February (0.3 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
Redon, France
- Average daylight in September: 12h and 36min
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 6min
The month with the most sunshine is July (Average sunshine: 10h and 42min).
The month with the least sunshine is January (Average sunshine: 4h and 30min).
Average sunshine days in September
Redon, France
- Average sunshine days in September: 17.9 days
The month with the most sunshine days is September (17.9 days).
The month with the least sunshine days is November (10.5 days).
Average UV index in September
Redon, France
- Average UV index in September: 4
The months with the highest UV index are May, June, July and August (UV index 5).
The month with the lowest UV index is January (UV index 2).
Average cloud cover in September
Redon, France
- Average cloud cover in September: 31
The month with the most cloud cover is January (Cloud cover 55).
The month with the least cloud cover is September (Cloud cover 31).
Average visibility in September
Redon, France
- Average visibility in September: 10km
The months with the highest visibility are February, March, April, May, June, July, August, September, October, November and December (10km).
The month with the lowest visibility is January (9km).
