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 transition into September is accompanied by a slight temperature decrease, with the average high-temperature shifting from a moderately hot 25.1°C (77.2°F) in August to an agreeable 20.5°C (68.9°F). Nighttime temperatures in Dionay hover around an average low of 10.1°C (50.2°F) in September.Humidity
In September, the average relative humidity in Dionay is 79%.Rainfall
The month with the least rainfall in Dionay is September, when the rain falls for 11.4 days and typically collects 34mm (1.34") of precipitation.Snowfall
In Dionay, snow does not fall in June through September.Daylight
The average length of the day in September is 12h and 32min.On the first day of September in Dionay, sunrise is at 07:01 and sunset at 20:16. On the last day of the month, sunrise is at 07:36 and sunset at 19:21 CEST.
Sunshine
In September, the average sunshine is 8.5h.UV index
In Dionay, the average daily maximum UV index in September is 4. A UV Index estimate of 3 to 5 represents a moderate threat to health from unsafe exposure to UV radiation for the average person.Note: The daily maximum UV index of 4 in September interprets into the following advice:
Be vigilant - Preventing sunburn is recommended. Sun exposure should be minimized, especially during midday, to avoid harmful UV radiation. To best shield against UV radiation, choose sun-safe garments and dependable sunglasses.
Frequently asked questions
What is the usual temperature for Dionay in September?
What is the average humidity in September in Dionay?
What is the driest month in Dionay?
How many days does it rain in September in Dionay?
When it does not snow in Dionay?
Does it snow in Dionay in September?
What is the average length of the day in September in Dionay?
When are sunrise and sunset in September in Dionay?
How long on average sun shines in September in Dionay?
What is the UV index reading in September in Dionay?
Average temperature in September
Dionay, France
- Average high temperature in September: 20.5°C
The warmest month (with the highest average high temperature) is August (25.1°C).
The month with the lowest average high temperature is January (4.8°C).
- Average low temperature in September: 10.1°C
The month with the highest average low temperature is July (13.2°C).
The coldest month (with the lowest average low temperature) is January (-1.2°C).
Average pressure in September
Dionay, France
- Average pressure in September: 1018.2mbar
The month with the highest atmospheric pressure is December (1021mbar).
The month with the lowest atmospheric pressure is April (1015.2mbar).
Average wind speed in September
Dionay, France
- Average wind speed in September: 7.7km/h
The windiest month (with the highest average wind speed) is February (10.5km/h).
The calmest month (with the lowest average wind speed) is September (7.7km/h).
Average humidity in September
Dionay, France
- Average humidity in September: 79%
The months with the highest relative humidity are January, November and December (85%).
The month with the lowest relative humidity is August (74%).
Average rainfall in September
Dionay, France
- Average rainfall in September: 34mm
The wettest month (with the highest rainfall) is November (67mm).
The driest month (with the least rainfall) is September (34mm).
Average rainfall days in September
Dionay, France
- Average rainfall days in September: 11.4 days
The month with the highest number of rainy days is May (17.8 days).
The month with the least rainy days is August (11 days).
Average snowfall in September
Dionay, France
- Average snowfall in September: 0mm
The month with the highest snowfall is November (92mm).
The months with the least snowfall are June, July, August and September (0mm).
Average snowfall days in September
Dionay, France
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (8.8 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Dionay, 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 3min
The month with the most sunshine is August (Average sunshine: 10h and 48min).
The month with the least sunshine is January (Average sunshine: 4h and 42min).
Average sunshine days in September
Dionay, France
- Average sunshine days in September: 14.2 days
The month with the most sunshine days is August (16.8 days).
The month with the least sunshine days is May (9.5 days).
Average UV index in September
Dionay, 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
Dionay, France
- Average cloud cover in September: 35
The month with the most cloud cover is January (Cloud cover 53).
The month with the least cloud cover is August (Cloud cover 25).
Average visibility in September
Dionay, France
- Average visibility in September: 8km
The months with the highest visibility are February, March, April, July and August (9km).
The months with the lowest visibility are January, May, June, September, October, November and December (8km).
Dionay, France
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