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 onset of September brings a small shift in high-temperatures, falling from a pleasant 22.1°C (71.8°F) in August to a refreshing 17.8°C (64°F). During September, the average low-temperature is a frosty 7.7°C (45.9°F).Humidity
In Léchelles, the average relative humidity in September is 82%.Rainfall
September is the month with the least rainfall. Rain falls for 7.1 days and accumulates 8mm (0.31") of precipitation.Snowfall
In Léchelles, snow does not fall in June through September.Daylight
The average length of the day in September is 12h and 33min.On the first day of September in Léchelles, sunrise is at 06:52 and sunset at 20:11. On the last day of the month, sunrise is at 07:30 and sunset at 19:13 CEST.
Sunshine
In Léchelles, the average sunshine in September is 8.6h.UV index
In Léchelles, the average daily maximum UV index in September is 3. A UV Index estimate of 3 to 5 represents a moderate health risk from unprotected exposure to Sun's UV rays for the average person.Note: In September, the maximum UV index of 3 suggests this advice:
Take heed. Individuals of lighter complexion can be burned in less than half an hour. Around midday, solar radiation is most harmful; hence, exposure should be limited. A wide-brimmed hat provides unparalleled sun protection for sensitive areas like the eyes, ears, and neck. Be alert to the fact! The reflection from snow can nearly double the UV radiation of the Sun.
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Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the usual temperature for Léchelles in September?
What is the average humidity in September in Léchelles?
What is the driest month in Léchelles?
How many days does it rain in September in Léchelles?
When it does not snow in Léchelles?
Does it snow in Léchelles in September?
What is the average length of the day in September in Léchelles?
What time are sunrise and sunset in September in Léchelles?
How long on average sun shines in September in Léchelles?
What is the UV index reading in September in Léchelles?
Average temperature in September
Léchelles, Switzerland
- Average high temperature in September: 17.8°C
The warmest months (with the highest average high temperature) are July and August (22.1°C).
The month with the lowest average high temperature is January (2.5°C).
- Average low temperature in September: 7.7°C
The month with the highest average low temperature is July (11.3°C).
The coldest month (with the lowest average low temperature) is January (-3.8°C).
Average pressure in September
Léchelles, Switzerland
- Average pressure in September: 1018.6mbar
The month with the highest atmospheric pressure is December (1021.1mbar).
The month with the lowest atmospheric pressure is April (1015.5mbar).
Average wind speed in September
Léchelles, Switzerland
- Average wind speed in September: 7.7km/h
The windiest month (with the highest average wind speed) is February (11km/h).
The calmest month (with the lowest average wind speed) is August (6.6km/h).
Average humidity in September
Léchelles, Switzerland
- Average humidity in September: 82%
The month with the highest relative humidity is January (87%).
The months with the lowest relative humidity are April and July (79%).
Average rainfall in September
Léchelles, Switzerland
- Average rainfall in September: 8mm
The wettest month (with the highest rainfall) is June (26mm).
The driest month (with the least rainfall) is September (8mm).
Average rainfall days in September
Léchelles, Switzerland
- Average rainfall days in September: 7.1 days
The month with the highest number of rainy days is May (12.5 days).
The month with the least rainy days is February (6.2 days).
Average snowfall in September
Léchelles, Switzerland
- Average snowfall in September: 0mm
The month with the highest snowfall is January (25mm).
The months with the least snowfall are June, July, August and September (0mm).
Average snowfall days in September
Léchelles, Switzerland
- Average snowfall days in September: 0.1 days
The month with the highest number of snowfall days is January (4.6 days).
The months with the least snowfall days are June, July and August (0 days).
Average daylight in September /
Average sunshine in September
Léchelles, Switzerland
- Average daylight in September: 12h and 4min
The month with the longest days is June (Average daylight: 15h and 48min).
The month with the shortest days is December (Average daylight: 8h and 36min).
- Average sunshine in September: 8h and 4min
The months with the most sunshine are July and August (Average sunshine: 10h and 18min).
The month with the least sunshine is December (Average sunshine: 5h and 6min).
Average sunshine days in September
Léchelles, Switzerland
- Average sunshine days in September: 20.2 days
The month with the most sunshine days is October (23.5 days).
The month with the least sunshine days is May (15.8 days).
Average UV index in September
Léchelles, Switzerland
- Average UV index in September: 3
The months with the highest UV index are June and July (UV index 5).
The months with the lowest UV index are January, February, March, November and December (UV index 2).
Average cloud cover in September
Léchelles, Switzerland
- Average cloud cover in September: 37
The month with the most cloud cover is February (Cloud cover 48).
The month with the least cloud cover is August (Cloud cover 33).
Average visibility in September
Léchelles, Switzerland
- Average visibility in September: 8km
The months with the highest visibility are March, April, November and December (9km).
The months with the lowest visibility are January, February, May, June, July, August, September and October (8km).
Léchelles, Switzerland
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