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
September
Weather in September
Temperature
In Lisses, entering September brings a subtle temperature decrement, reducing from August's moderately hot 24.9°C (76.8°F) to a pleasant 21.1°C (70°F). Throughout September, an average low-temperature of 11.7°C (53.1°F) is experienced.Humidity
In Lisses, the average relative humidity in September is 73%.Rainfall
September is the month with the least rainfall. Rain falls for 9.1 days and accumulates 16mm (0.63") of precipitation.Snowfall
In Lisses, snow does not fall in April through October.Daylight
In September, the average length of the day is 12h and 35min.On the first day of September, sunrise is at 07:08 and sunset at 20:32. On the last day of the month, sunrise is at 07:49 and sunset at 19:31 CEST.
Sunshine
In Lisses, the average sunshine in September is 7.8h.UV index
The average daily maximum UV index in September in Lisses is 4. A UV Index estimate of 3 to 5 represents a medium vulnerability from exposure to the Sun's UV radiation for average individuals.Note: An average maximum UV index of 4 in September leads to these recommendations:
Preventative actions are necessary - Suggestions to safeguard against sun damage are in order. Avoiding direct sun during mid-day hours can prevent harmful UV radiation exposure. For optimum UV protection, wear sun-resistant attire complemented with a hat and quality shades.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the temperature in September in Lisses?
What is the average humidity in September in Lisses?
What is the driest month in Lisses?
How many days does it rain in September in Lisses?
When it does not snow in Lisses?
How many hours of daylight does Lisses have in September?
When is the sunrise / sunset in September in Lisses?
How long on average sun shines in September in Lisses?
What is the UV index intensity in September in Lisses?
Average temperature in September
Lisses, France
- Average high temperature in September: 21.1°C
The warmest month (with the highest average high temperature) is August (24.9°C).
The month with the lowest average high temperature is January (6°C).
- Average low temperature in September: 11.7°C
The month with the highest average low temperature is August (15°C).
The coldest months (with the lowest average low temperature) are January and February (1.8°C).
Average pressure in September
Lisses, France
- Average pressure in September: 1018.1mbar
The month with the highest atmospheric pressure is December (1018.5mbar).
The month with the lowest atmospheric pressure is November (1013.6mbar).
Average wind speed in September
Lisses, France
- Average wind speed in September: 10.3km/h
The windiest month (with the highest average wind speed) is February (15.5km/h).
The calmest month (with the lowest average wind speed) is August (10km/h).
Average humidity in September
Lisses, 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
Lisses, France
- Average rainfall in September: 16mm
The wettest month (with the highest rainfall) is June (40mm).
The driest month (with the least rainfall) is September (16mm).
Average rainfall days in September
Lisses, France
- Average rainfall days in September: 9.1 days
The month with the highest number of rainy days is June (15.2 days).
The month with the least rainy days is September (9.1 days).
Average snowfall in September
Lisses, France
- Average snowfall in September: 0mm
The months with the highest snowfall are February and December (15mm).
The months with the least snowfall are April, May, June, July, August, September and October (0mm).
Average snowfall days in September
Lisses, 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
Lisses, 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 5min
The month with the most sunshine is August (Average sunshine: 9h and 24min).
The month with the least sunshine is January (Average sunshine: 3h and 54min).
Average sunshine days in September
Lisses, France
- Average sunshine days in September: 18.4 days
The month with the most sunshine days is September (18.4 days).
The month with the least sunshine days is June (11 days).
Average UV index in September
Lisses, 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
Lisses, France
- Average cloud cover in September: 37
The month with the most cloud cover is January (Cloud cover 60).
The month with the least cloud cover is September (Cloud cover 37).
Average visibility in September
Lisses, 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).
