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
Le Donjon observes a small decrease in the average high-temperature with the arrival of September, falling from August's warm 25.3°C (77.5°F) to an agreeable 21.4°C (70.5°F). In Le Donjon, September nights witness a steady temperature drop to a cool 10°C (50°F).Humidity
In September, the average relative humidity is 75%.Rainfall
The month with the least rainfall is September, when the rain falls for 10.6 days and typically collects 27mm (1.06") of precipitation.Snowfall
June through September are months without snowfall.Daylight
In Le Donjon, the average length of the day in September is 12h and 32min.On the first day of the month, sunrise is at 07:05 and sunset at 20:23. On the last day of September, sunrise is at 07:42 and sunset at 19:26 CEST.
Sunshine
In Le Donjon, the average sunshine in September is 8.2h.UV index
In Le Donjon, the average daily maximum UV index in September is 4. A UV Index value of 3 to 5 symbolizes a medium vulnerability from exposure to the Sun's UV rays for the ordinary person.Note: A daily high UV index of 4 in September leads to these guidelines:
Take necessary precautions - Defending against sun damage is advocated. Midday is the peak time for the Sun's radiation; stay in the shade and protect yourself. Always opt for UVA and UVB-resistant sunglasses on radiant days.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the average September temperature in Le Donjon?
What is the average humidity in September in Le Donjon?
What is the driest month in Le Donjon?
How much does it rain in Le Donjon in September?
When it does not snow in Le Donjon?
Does it snow in Le Donjon in September?
How many hours of daylight does Le Donjon have in September?
When are sunrise and sunset in September in Le Donjon?
How long on average sun shines in September in Le Donjon?
How high is the UV index in September in Le Donjon?
Average temperature in September
Le Donjon, France
- Average high temperature in September: 21.4°C
The warmest month (with the highest average high temperature) is August (25.3°C).
The month with the lowest average high temperature is January (6°C).
- Average low temperature in September: 10°C
The month with the highest average low temperature is August (13.3°C).
The coldest month (with the lowest average low temperature) is February (0°C).
Average pressure in September
Le Donjon, France
- Average pressure in September: 1018.6mbar
The month with the highest atmospheric pressure is December (1021.2mbar).
The month with the lowest atmospheric pressure is November (1015.5mbar).
Average wind speed in September
Le Donjon, France
- Average wind speed in September: 8.1km/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 (7.8km/h).
Average humidity in September
Le Donjon, France
- Average humidity in September: 75%
The month with the highest relative humidity is December (85%).
The month with the lowest relative humidity is August (71%).
Average rainfall in September
Le Donjon, France
- Average rainfall in September: 27mm
The wettest month (with the highest rainfall) is June (59mm).
The driest month (with the least rainfall) is September (27mm).
Average rainfall days in September
Le Donjon, France
- Average rainfall days in September: 10.6 days
The month with the highest number of rainy days is May (18.5 days).
The month with the least rainy days is September (10.6 days).
Average snowfall in September
Le Donjon, France
- Average snowfall in September: 0mm
The month with the highest snowfall is January (48mm).
The months with the least snowfall are June, July, August and September (0mm).
Average snowfall days in September
Le Donjon, France
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (6.2 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Le Donjon, France
- Average daylight in September: 12h and 3min
The month with the longest days is June (Average daylight: 15h and 42min).
The month with the shortest days is December (Average daylight: 8h and 42min).
- Average sunshine in September: 8h and 1min
The month with the most sunshine is August (Average sunshine: 10h and 12min).
The month with the least sunshine is January (Average sunshine: 4h and 24min).
Average sunshine days in September
Le Donjon, France
- Average sunshine days in September: 16.9 days
The month with the most sunshine days is September (16.9 days).
The month with the least sunshine days is January (9.4 days).
Average UV index in September
Le Donjon, 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
Le Donjon, France
- Average cloud cover in September: 35
The month with the most cloud cover is January (Cloud cover 57).
The month with the least cloud cover is August (Cloud cover 31).
Average visibility in September
Le Donjon, France
- Average visibility in September: 8km
The months with the highest visibility are March, April and August (9km).
The months with the lowest visibility are January, February, May, June, July, September, October, November and December (8km).
Le Donjon, France
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