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
The arrival of September signals a subtle shift in temperature, down from a moderately hot 23.1°C (73.6°F) in August to a comfortable 18.6°C (65.5°F). During September, Lettret records an average temperature of 7°C (44.6°F) at night.Humidity
In Lettret, France, the average relative humidity in September is 71%.Rainfall
The months with the least rainfall are July and September Rain falls for 10.7 days and accumulates 28mm (1.1") of rain.Snowfall
June through September are months without snowfall in Lettret.Daylight
In September, the average length of the day in Lettret is 12h and 31min.On the first day of the month, sunrise is at 06:59 and sunset at 20:12. On the last day of September, sunrise is at 07:32 and sunset at 19:18 CEST.
Sunshine
The average sunshine in September in Lettret is 9.7h.UV index
The average daily maximum UV index in September in Lettret is 4. A UV Index estimate of 3 to 5 represents a moderate health risk from exposure to the Sun's UV radiation for the average person.Note: In September, a daily UV index of 4 turns into the following recommendations:
Undertake protective steps - Obligation to safeguard skin and eyes from harm is in place. The Sun is most powerful around mid-day, so it's a good practice to reduce direct exposure. Consider a wide-brim hat essential for effective sun defense covering your face, neck, and eyes.
Frequently asked questions
What are September temperatures in Lettret?
What is the average humidity in September in Lettret?
What is the driest month in Lettret?
How many days does it rain in September in Lettret?
When it does not snow in Lettret?
Does it snow in Lettret in September?
How many hours of daylight does Lettret have in September?
When are sunrise and sunset in September in Lettret?
How many hours of sunshine does Lettret have in September?
What is the UV index reading in September in Lettret?
Average temperature in September
Lettret, France
- Average high temperature in September: 18.6°C
The warmest month (with the highest average high temperature) is August (23.1°C).
The month with the lowest average high temperature is January (2.7°C).
- Average low temperature in September: 7°C
The month with the highest average low temperature is August (9.9°C).
The coldest month (with the lowest average low temperature) is February (-5.9°C).
Average pressure in September
Lettret, France
- Average pressure in September: 1017.2mbar
The month with the highest atmospheric pressure is December (1020mbar).
The month with the lowest atmospheric pressure is April (1014.5mbar).
Average wind speed in September
Lettret, France
- Average wind speed in September: 7.4km/h
The windiest month (with the highest average wind speed) is February (9.4km/h).
The calmest month (with the lowest average wind speed) is September (7.4km/h).
Average humidity in September
Lettret, France
- Average humidity in September: 71%
The month with the highest relative humidity is February (81%).
The month with the lowest relative humidity is August (64%).
Average rainfall in September
Lettret, France
- Average rainfall in September: 28mm
The wettest month (with the highest rainfall) is November (74mm).
The driest months (with the least rainfall) are July and September (28mm).
Average rainfall days in September
Lettret, France
- Average rainfall days in September: 10.7 days
The month with the highest number of rainy days is May (17.4 days).
The month with the least rainy days is January (8.6 days).
Average snowfall in September
Lettret, France
- Average snowfall in September: 0mm
The month with the highest snowfall is December (119mm).
The months with the least snowfall are June, July, August and September (0mm).
Average snowfall days in September
Lettret, France
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (6.1 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Lettret, 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: 9h and 4min
The month with the most sunshine is July (Average sunshine: 11h and 48min).
The month with the least sunshine is January (Average sunshine: 6h and 24min).
Average sunshine days in September
Lettret, France
- Average sunshine days in September: 15.8 days
The month with the most sunshine days is October (18.7 days).
The month with the least sunshine days is June (9.8 days).
Average UV index in September
Lettret, France
- Average UV index in September: 4
The months with the highest UV index are June and July (UV index 5).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in September
Lettret, France
- Average cloud cover in September: 19
The month with the most cloud cover is February (Cloud cover 31).
The month with the least cloud cover is August (Cloud cover 15).
Average visibility in September
Lettret, France
- Average visibility in September: 9km
The months with the highest visibility are July and August (10km).
The months with the lowest visibility are January, February, March, April, May, June, September, October, November and December (9km).
Lettret, France
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