September weather forecastPortets, France
September
Weather in September
September, the first month of the autumn in Portets, is also a moderately hot month, with an average temperature varying between 24.4°C (75.9°F) and 13.8°C (56.8°F).Temperature
September is marked by a subtle drop in average high-temperatures, transitioning from 27.5°C (81.5°F) in August to a still moderately hot 24.4°C (75.9°F). In the month of September, an average of 13.8°C (56.8°F) marks the low-temperature in Portets.Humidity
In September, the average relative humidity is 70%.Rainfall
The month with the least rainfall in Portets, France, is September, when the rain falls for 8.5 days and typically collects 15mm (0.59") of precipitation.Snowfall
In Portets, snow does not fall in January, April through November.Daylight
In Portets, the average length of the day in September is 12h and 31min.On the first day of the month, sunrise is at 07:24 and sunset at 20:38. On the last day of September, sunrise is at 07:59 and sunset at 19:44 CEST.
Sunshine
The average sunshine in September is 8.5h.UV index
In Portets, the average daily maximum UV index in September is 5. A UV Index value of 3 to 5 symbolizes a moderate health risk from exposure to the Sun's UV rays for the average person.Note: The maximum daily UV index of 5 in September interprets into the following recommendations:
Heed the precautions - It is counselled to guard against solar damage. UV radiation from the Sun is most dangerous during midday; take precautions and seek shade. Sunglasses that ward off UVA and UVB rays play a pivotal role in reducing solar eye damage.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Portets, 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
Portets, 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
Portets, 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
Portets, 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
Portets, 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
Portets, 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
Portets, 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
Portets, 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
Portets, France
- Average daylight in September: 12h and 30min
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 30min
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
Portets, 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
Portets, 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
Portets, 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
Portets, 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).
