September weather forecastTreffendel, France
September
Weather in September
The first month of the autumn, September, is also an agreeable month in Treffendel, France, with an average temperature ranging between max 20.8°C (69.4°F) and min 10.8°C (51.4°F).Temperature
Treffendel observes a minor difference in average high-temperatures between August's 23.1°C (73.6°F) and September's 20.8°C (69.4°F). Treffendel, in September, observes a steady average low-temperature of 10.8°C (51.4°F).Humidity
July through September, with an average relative humidity of 78%, are the least humid months in Treffendel.Rainfall
The month with the least rainfall is September, when the rain falls for 8.4 days and typically collects 12mm (0.47") of precipitation.Snowfall
In Treffendel, snow does not fall in May through October.Daylight
In September, the average length of the day in Treffendel is 12h and 34min.On the first day of September, sunrise is at 07:26 and sunset at 20:48. On the last day of the month, sunrise is at 08:06 and sunset at 19:49 CEST.
Sunshine
In Treffendel, the average sunshine in September is 7.5h.UV index
In Treffendel, the average daily maximum UV index in September is 4. A UV Index reading of 3 to 5 represents a medium vulnerability from exposure to the Sun's UV rays for ordinary individuals.Note: The UV index of 4 during September leads to these advisories:
Take necessary precautions - Suggestions to elude sunburn are provided. To guard against the harmful effects of the Sun, minimize exposure during midday. Opt for tightly woven and loose clothing to enhance protection from the Sun.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Treffendel, France
- Average high temperature in September: 20.8°C
The warmest month (with the highest average high temperature) is August (23.1°C).
The month with the lowest average high temperature is January (8.4°C).
- Average low temperature in September: 10.8°C
The month with the highest average low temperature is July (12.8°C).
The coldest month (with the lowest average low temperature) is February (2.3°C).
Average pressure in September
Treffendel, France
- Average pressure in September: 1018.3mbar
The month with the highest atmospheric pressure is December (1018.4mbar).
The month with the lowest atmospheric pressure is November (1012.9mbar).
Average wind speed in September
Treffendel, France
- Average wind speed in September: 12.1km/h
The windiest month (with the highest average wind speed) is February (17.6km/h).
The calmest month (with the lowest average wind speed) is August (11.7km/h).
Average humidity in September
Treffendel, France
- Average humidity in September: 78%
The month with the highest relative humidity is December (88%).
The months with the lowest relative humidity are July, August and September (78%).
Average rainfall in September
Treffendel, France
- Average rainfall in September: 12mm
The wettest month (with the highest rainfall) is June (39mm).
The driest month (with the least rainfall) is September (12mm).
Average rainfall days in September
Treffendel, France
- Average rainfall days in September: 8.4 days
The month with the highest number of rainy days is May (15.3 days).
The month with the least rainy days is September (8.4 days).
Average snowfall in September
Treffendel, France
- Average snowfall in September: 0mm
The months with the highest snowfall are February, March, April and December (2mm).
The months with the least snowfall are May, June, July, August, September and October (0mm).
Average snowfall days in September
Treffendel, France
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (0.8 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
Treffendel, France
- Average daylight in September: 12h and 36min
The month with the longest days is June (Average daylight: 16h and 0min).
The month with the shortest days is December (Average daylight: 8h and 24min).
- Average sunshine in September: 7h and 30min
The month with the most sunshine is July (Average sunshine: 9h and 42min).
The month with the least sunshine is January (Average sunshine: 4h and 12min).
Average sunshine days in September
Treffendel, France
- Average sunshine days in September: 18.5 days
The month with the most sunshine days is September (18.5 days).
The month with the least sunshine days is May (12.1 days).
Average UV index in September
Treffendel, 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
Treffendel, France
- Average cloud cover in September: 41
The month with the most cloud cover is January (Cloud cover 59).
The month with the least cloud cover is September (Cloud cover 41).
Average visibility in September
Treffendel, France
- Average visibility in September: 8km
The months with the highest visibility are January, February, March, April, June, July, October, November and December (9km).
The months with the lowest visibility are May, August and September (8km).
