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
September signifies a minor drop in average high-temperature, transitioning from a moderately hot 28.4°C (83.1°F) in August to a still warm 24.7°C (76.5°F). Throughout the month of September, Portet-sur-Garonne expects an average low of 13.7°C (56.7°F).Humidity
In Portet-sur-Garonne, the average relative humidity in September is 67%.Rainfall
The month with the least rainfall is September, when the rain falls for 10.7 days and typically collects 26mm (1.02") of precipitation.Snowfall
April through October are months without snowfall.Daylight
The average length of the day in September in Portet-sur-Garonne is 12h and 30min.On the first day of the month, sunrise is at 07:18 and sunset at 20:29. On the last day of September, sunrise is at 07:51 and sunset at 19:37 CEST.
Sunshine
The average sunshine in September in Portet-sur-Garonne is 8.5h.UV index
In September, the average daily maximum UV index in Portet-sur-Garonne is 5. A UV Index of 3 to 5 symbolizes a medium vulnerability from exposure to the Sun's UV radiation for the ordinary person.Note: An average UV index of 5 in September transforms into this advice:
Act with care - The need to guard against sun damage is communicated. Protect yourself from the midday Sun's peak UV radiation by minimizing exposure. Sun protection is enhanced with clothing that boasts a tight weave yet offers a loose fit.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the usual temperature for Portet-sur-Garonne in September?
What is the average humidity in September in Portet-sur-Garonne?
What is the driest month in Portet-sur-Garonne?
How many days does it rain in September in Portet-sur-Garonne?
When it does not snow in Portet-sur-Garonne?
What is the average length of the day in September in Portet-sur-Garonne?
When are sunrise and sunset in September in Portet-sur-Garonne?
How long on average sun shines in September in Portet-sur-Garonne?
What is the UV index reading in September in Portet-sur-Garonne?
Average temperature in September
Portet-sur-Garonne, France
- Average high temperature in September: 24.7°C
The warmest month (with the highest average high temperature) is August (28.4°C).
The month with the lowest average high temperature is January (8.8°C).
- Average low temperature in September: 13.7°C
The month with the highest average low temperature is August (16.5°C).
The coldest month (with the lowest average low temperature) is February (2.7°C).
Average pressure in September
Portet-sur-Garonne, France
- Average pressure in September: 1018.2mbar
The month with the highest atmospheric pressure is December (1021.7mbar).
The month with the lowest atmospheric pressure is April (1015.4mbar).
Average wind speed in September
Portet-sur-Garonne, France
- Average wind speed in September: 9.7km/h
The windiest month (with the highest average wind speed) is March (13.7km/h).
The calmest months (with the lowest average wind speed) are August and September (9.7km/h).
Average humidity in September
Portet-sur-Garonne, France
- Average humidity in September: 67%
The months with the highest relative humidity are January and December (83%).
The month with the lowest relative humidity is August (65%).
Average rainfall in September
Portet-sur-Garonne, France
- Average rainfall in September: 26mm
The wettest month (with the highest rainfall) is May (61mm).
The driest month (with the least rainfall) is September (26mm).
Average rainfall days in September
Portet-sur-Garonne, France
- Average rainfall days in September: 10.7 days
The month with the highest number of rainy days is April (16.8 days).
The month with the least rainy days is September (10.7 days).
Average snowfall in September
Portet-sur-Garonne, France
- Average snowfall in September: 0mm
The month with the highest snowfall is February (22mm).
The months with the least snowfall are April, May, June, July, August, September and October (0mm).
Average snowfall days in September
Portet-sur-Garonne, France
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (2.7 days).
The months with the least snowfall days are April, May, June, July, August, September and October (0 days).
Average daylight in September /
Average sunshine in September
Portet-sur-Garonne, France
- Average daylight in September: 12h and 3min
The month with the longest days is June (Average daylight: 15h and 24min).
The month with the shortest days is December (Average daylight: 9h and 0min).
- 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 January (Average sunshine: 4h and 54min).
Average sunshine days in September
Portet-sur-Garonne, France
- Average sunshine days in September: 17.2 days
The month with the most sunshine days is October (18 days).
The month with the least sunshine days is May (11.7 days).
Average UV index in September
Portet-sur-Garonne, France
- Average UV index in September: 5
The months with the highest UV index are June, July and August (UV index 6).
The months with the lowest UV index are January, February and November (UV index 2).
Average cloud cover in September
Portet-sur-Garonne, France
- Average cloud cover in September: 29
The month with the most cloud cover is January (Cloud cover 52).
The month with the least cloud cover is August (Cloud cover 28).
Average visibility in September
Portet-sur-Garonne, France
- Average visibility in September: 9km
The month with the highest visibility is August (10km).
The months with the lowest visibility are January, February, March, April, May, June, July, September, October, November and December (9km).
Portet-sur-Garonne, France
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