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
Le Mans observes a small decrease in the average high-temperature with the arrival of September, falling from August's moderately hot 24.2°C (75.6°F) to a pleasant 21.1°C (70°F). In September, the average low-temperature is a fresh 11.2°C (52.2°F).Humidity
In September, the average relative humidity in Le Mans is 75%.Rainfall
The month with the least rainfall is September, when the rain falls for 8.5 days and typically collects 16mm (0.63") of precipitation.Snowfall
In Le Mans, snow does not fall in April through October.Daylight
In September, the average length of the day is 12h and 34min.On the first day of the month, sunrise is at 07:17 and sunset at 20:40. On the last day of September, sunrise is at 07:57 and sunset at 19:40 CEST.
Sunshine
In Le Mans, the average sunshine in September is 7.7h.UV index
The average daily maximum UV index in September in Le Mans, France, is 4. A UV Index value of 3 to 5 symbolizes a medium health hazard from unsafe exposure to UV radiation for the average person.Note: The maximum daily UV index of 4 in September interprets into the following recommendations:
Be vigilant - Preventing sunburn is recommended. The Sun's UV radiation is especially harmful around midday, so reduce exposure and stay safe. A hat with a generous brim can prevent nearly 50% of UV rays from reaching your eyes.
Frequently asked questions
What is the usual temperature for Le Mans in September?
What is the average humidity in September in Le Mans?
What is the driest month in Le Mans?
How much does it rain in Le Mans in September?
When it does not snow in Le Mans?
What is the average length of the day in September in Le Mans?
When are sunrise and sunset in September in Le Mans?
How many hours of sunshine does Le Mans have in September?
How high is the UV index in September in Le Mans?
Average temperature in September
Le Mans, France
- Average high temperature in September: 21.1°C
The warmest month (with the highest average high temperature) is August (24.2°C).
The month with the lowest average high temperature is January (7.1°C).
- Average low temperature in September: 11.2°C
The month with the highest average low temperature is August (13.7°C).
The coldest month (with the lowest average low temperature) is February (1.8°C).
Average pressure in September
Le Mans, France
- Average pressure in September: 1018.2mbar
The month with the highest atmospheric pressure is December (1018.9mbar).
The month with the lowest atmospheric pressure is November (1013.5mbar).
Average wind speed in September
Le Mans, France
- Average wind speed in September: 11.5km/h
The windiest month (with the highest average wind speed) is February (17km/h).
The calmest month (with the lowest average wind speed) is August (10.9km/h).
Average humidity in September
Le Mans, France
- Average humidity in September: 75%
The months with the highest relative humidity are January and December (88%).
The month with the lowest relative humidity is August (74%).
Average rainfall in September
Le Mans, France
- Average rainfall in September: 16mm
The wettest month (with the highest rainfall) is May (40mm).
The driest month (with the least rainfall) is September (16mm).
Average rainfall days in September
Le Mans, France
- Average rainfall days in September: 8.5 days
The month with the highest number of rainy days is May (16.1 days).
The month with the least rainy days is September (8.5 days).
Average snowfall in September
Le Mans, France
- Average snowfall in September: 0mm
The month with the highest snowfall is January (6mm).
The months with the least snowfall are April, May, June, July, August, September and October (0mm).
Average snowfall days in September
Le Mans, France
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (1.3 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).
Average daylight in September /
Average sunshine in September
Le Mans, France
- Average daylight in September: 12h and 4min
The month with the longest days is June (Average daylight: 16h and 0min).
The month with the shortest days is December (Average daylight: 8h and 30min).
- Average sunshine in September: 7h and 4min
The month with the most sunshine is July (Average sunshine: 9h and 24min).
The month with the least sunshine is January (Average sunshine: 4h and 6min).
Average sunshine days in September
Le Mans, France
- Average sunshine days in September: 19.6 days
The month with the most sunshine days is September (19.6 days).
The month with the least sunshine days is May (10.8 days).
Average UV index in September
Le Mans, 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
Le Mans, France
- Average cloud cover in September: 38
The month with the most cloud cover is January (Cloud cover 58).
The month with the least cloud cover is September (Cloud cover 38).
Average visibility in September
Le Mans, France
- Average visibility in September: 9km
The months with the highest visibility are January, February, March, April, June, July, August, September, October, November and December (9km).
The month with the lowest visibility is May (8km).
Le Mans, France
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