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
In Dourdan, the average high-temperature in September gently drops from a moderately hot 24.3°C (75.7°F) in August to a pleasant 20.8°C (69.4°F). The nighttime temperature in Dourdan, during September, averages of 11.5°C (52.7°F).Humidity
In September, the average relative humidity is 73%.Rainfall
September is the month with the least rainfall. Rain falls for 9.6 days and accumulates 15mm (0.59") of precipitation.Snowfall
April through October are months without snowfall.Daylight
In September, the average length of the day in Dourdan is 12h and 35min.On the first day of the month, sunrise is at 07:09 and sunset at 20:33. On the last day of September, in Dourdan, sunrise is at 07:50 and sunset at 19:32 CEST.
Sunshine
In Dourdan, the average sunshine in September is 7.7h.UV index
The average daily maximum UV index in September in Dourdan is 4. A UV Index reading of 3 to 5 represents a medium vulnerability from unsafe exposure to UV radiation for the average person.Note: In September, the maximum UV index of 4 translates into these guidelines:
Take precautions - Protection against skin and eye damage is obliged. Direct Sun exposure should be minimized especially during midday when radiation is most intense. Protect your eyes, ears, face, and neck from the Sun by wearing a wide-brimmed hat.
Frequently asked questions
What are September temperatures in Dourdan?
What is the average humidity in September in Dourdan?
What is the driest month in Dourdan?
How many days does it rain in September in Dourdan?
When it does not snow in Dourdan?
How many hours of daylight does Dourdan have in September?
When are sunrise and sunset in September in Dourdan?
How long on average sun shines in September in Dourdan?
What is the UV index reading in September in Dourdan?
Average temperature in September
Dourdan, France
- Average high temperature in September: 20.8°C
The warmest month (with the highest average high temperature) is August (24.3°C).
The month with the lowest average high temperature is January (5.8°C).
- Average low temperature in September: 11.5°C
The months with the highest average low temperature are July and August (14.4°C).
The coldest months (with the lowest average low temperature) are January and February (1.6°C).
Average pressure in September
Dourdan, France
- Average pressure in September: 1018.1mbar
The month with the highest atmospheric pressure is December (1018.3mbar).
The month with the lowest atmospheric pressure is November (1013.4mbar).
Average wind speed in September
Dourdan, France
- Average wind speed in September: 10.7km/h
The windiest month (with the highest average wind speed) is February (16km/h).
The calmest month (with the lowest average wind speed) is August (10.3km/h).
Average humidity in September
Dourdan, France
- Average humidity in September: 73%
The months with the highest relative humidity are January and December (86%).
The month with the lowest relative humidity is August (69%).
Average rainfall in September
Dourdan, France
- Average rainfall in September: 15mm
The wettest month (with the highest rainfall) is June (40mm).
The driest month (with the least rainfall) is September (15mm).
Average rainfall days in September
Dourdan, France
- Average rainfall days in September: 9.6 days
The month with the highest number of rainy days is June (15.9 days).
The month with the least rainy days is September (9.6 days).
Average snowfall in September
Dourdan, France
- Average snowfall in September: 0mm
The months with the highest snowfall are January, March and December (18mm).
The months with the least snowfall are April, May, June, July, August, September and October (0mm).
Average snowfall days in September
Dourdan, France
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (3.3 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
Dourdan, France
- Average daylight in September: 12h and 4min
The month with the longest days is June (Average daylight: 16h and 6min).
The month with the shortest days is December (Average daylight: 8h and 24min).
- Average sunshine in September: 7h and 4min
The months with the most sunshine are July and August (Average sunshine: 9h and 6min).
The month with the least sunshine is January (Average sunshine: 3h and 48min).
Average sunshine days in September
Dourdan, France
- Average sunshine days in September: 17.1 days
The month with the most sunshine days is September (17.1 days).
The month with the least sunshine days is June (10.9 days).
Average UV index in September
Dourdan, 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
Dourdan, France
- Average cloud cover in September: 38
The month with the most cloud cover is January (Cloud cover 60).
The month with the least cloud cover is September (Cloud cover 38).
Average visibility in September
Dourdan, France
- Average visibility in September: 9km
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (9km).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (9km).
Dourdan, France
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