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 Gradignan, the average high-temperature in September slightly decreases from 27.5°C (81.5°F) in August to a still warm 24.4°C (75.9°F). Gradignan witnesses an average low-temperature of 13.8°C (56.8°F) throughout the month of September.Humidity
The average relative humidity in September in Gradignan is 70%.Rainfall
The month with the least rainfall in Gradignan is September, when the rain falls for 8.5 days and typically collects 15mm (0.59") of precipitation.Snowfall
January, April through November are months without snowfall.Daylight
In Gradignan, France, the average length of the day in September is 12h and 31min.On the first day of September in Gradignan, sunrise is at 07:25 and sunset at 20:39. On the last day of the month, sunrise is at 07:59 and sunset at 19:44 CEST.
Sunshine
In Gradignan, the average sunshine in September is 8.5h.UV index
In September, the average daily maximum UV index is 5. A UV Index reading of 3 to 5 represents a medium vulnerability from unprotected exposure to Sun's UV rays for the average person.Note: The UV index of 5 in September translates into these instructions:
Undertake protective steps - Obligation to safeguard skin and eyes from harm is in place. To guard against the harmful effects of the Sun, minimize exposure during midday. Arm yourself against UV rays' harm with protective apparel and UV-filtering shades.
Frequently asked questions
What is the temperature in September in Gradignan?
What is the average humidity in September in Gradignan?
What is the driest month in Gradignan?
How many days does it rain in September in Gradignan?
When it does not snow in Gradignan?
What is the average length of the day in September in Gradignan?
When are sunrise and sunset in September in Gradignan?
How many hours of sunshine does Gradignan have in September?
What is the UV index intensity in September in Gradignan?
Average temperature in September
Gradignan, France
- Average high temperature in September: 24.4°C
The warmest month (with the highest average high temperature) is August (27.5°C).
The month with the lowest average high temperature is January (9.8°C).
- Average low temperature in September: 13.8°C
The month with the highest average low temperature is July (16.3°C).
The coldest month (with the lowest average low temperature) is February (4.1°C).
Average pressure in September
Gradignan, France
- Average pressure in September: 1018.3mbar
The month with the highest atmospheric pressure is December (1020.9mbar).
The month with the lowest atmospheric pressure is November (1015mbar).
Average wind speed in September
Gradignan, France
- Average wind speed in September: 9km/h
The windiest month (with the highest average wind speed) is March (11.9km/h).
The calmest month (with the lowest average wind speed) is August (8.8km/h).
Average humidity in September
Gradignan, France
- Average humidity in September: 70%
The months with the highest relative humidity are January and December (84%).
The month with the lowest relative humidity is August (68%).
Average rainfall in September
Gradignan, France
- Average rainfall in September: 15mm
The wettest month (with the highest rainfall) is November (51mm).
The driest month (with the least rainfall) is September (15mm).
Average rainfall days in September
Gradignan, France
- Average rainfall days in September: 8.5 days
The month with the highest number of rainy days is May (14.2 days).
The month with the least rainy days is September (8.5 days).
Average snowfall in September
Gradignan, France
- Average snowfall in September: 0mm
The month with the highest snowfall is December (4mm).
The months with the least snowfall are January, April, May, June, July, August, September, October and November (0mm).
Average snowfall days in September
Gradignan, France
- Average snowfall days in September: 0 days
The months with the highest number of snowfall days are February and December (0.3 days).
The months with the least snowfall days are January, April, May, June, July, August, September, October and November (0 days).
Average daylight in September /
Average sunshine in September
Gradignan, France
- Average daylight in September: 12h and 3min
The month with the longest days is June (Average daylight: 15h and 30min).
The month with the shortest days is December (Average daylight: 8h and 54min).
- Average sunshine in September: 8h and 3min
The month with the most sunshine is July (Average sunshine: 10h and 6min).
The month with the least sunshine is December (Average sunshine: 5h and 0min).
Average sunshine days in September
Gradignan, France
- Average sunshine days in September: 19.6 days
The month with the most sunshine days is September (19.6 days).
The months with the least sunshine days are May and June (13.8 days).
Average UV index in September
Gradignan, France
- Average UV index in September: 5
The months with the highest UV index are July and August (UV index 6).
The months with the lowest UV index are January, February, March, November and December (UV index 3).
Average cloud cover in September
Gradignan, France
- Average cloud cover in September: 29
The month with the most cloud cover is January (Cloud cover 53).
The month with the least cloud cover is August (Cloud cover 28).
Average visibility in September
Gradignan, France
- Average visibility in September: 9km
The months with the highest visibility are February, March, April, May, June, July, August, September, October, November and December (9km).
The month with the lowest visibility is January (8km).
Gradignan, France
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