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 Sappey-en-Chartreuse's transition into September involves a gentle shift in temperature, receding from a pleasant 22.6°C (72.7°F) in August to an enjoyable 18.3°C (64.9°F). In Le Sappey-en-Chartreuse, September nights cool down to an average of 8°C (46.4°F).Humidity
In Le Sappey-en-Chartreuse, the average relative humidity in September is 79%.Rainfall
September is the month with the least rainfall. Rain falls for 10.6 days and accumulates 23mm (0.91") of precipitation.Snowfall
June through September are months without snowfall.Daylight
The average length of the day in September is 12h and 32min.On the first day of September, sunrise is at 06:59 and sunset at 20:14. On the last day of the month, sunrise is at 07:34 and sunset at 19:19 CEST.
Sunshine
In Le Sappey-en-Chartreuse, the average sunshine in September is 8.8h.UV index
In September, the average daily maximum UV index is 4. A UV Index value of 3 to 5 symbolizes a medium health hazard from unsafe exposure to UV radiation for ordinary individuals.Note: In September, the maximum UV index of 4 suggests this advice:
Exercise caution. Those with pale skin may experience burns in less than half an hour. Being exposed to the midday Sun can have harmful effects due to strong UV radiation; always take precautions. Opt for tightly woven and loose clothing to enhance protection from the Sun. Be prepared! The intensity of the Sun's UV radiation can be amplified nearly double due to snow reflection.
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Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the usual temperature for Le Sappey-en-Chartreuse in September?
What is the average humidity in September in Le Sappey-en-Chartreuse?
What is the driest month in Le Sappey-en-Chartreuse?
How many days does it rain in September in Le Sappey-en-Chartreuse?
When it does not snow in Le Sappey-en-Chartreuse?
Does it snow in Le Sappey-en-Chartreuse in September?
What is the average length of the day in September in Le Sappey-en-Chartreuse?
When are sunrise and sunset in September in Le Sappey-en-Chartreuse?
How long on average sun shines in September in Le Sappey-en-Chartreuse?
What is the UV index reading in September in Le Sappey-en-Chartreuse?
Average temperature in September
Le Sappey-en-Chartreuse, France
- Average high temperature in September: 18.3°C
The warmest months (with the highest average high temperature) are July and August (22.6°C).
The month with the lowest average high temperature is January (2.8°C).
- Average low temperature in September: 8°C
The months with the highest average low temperature are July and August (11.2°C).
The coldest month (with the lowest average low temperature) is February (-3.7°C).
Average pressure in September
Le Sappey-en-Chartreuse, France
- Average pressure in September: 1018mbar
The month with the highest atmospheric pressure is December (1020.8mbar).
The month with the lowest atmospheric pressure is April (1015mbar).
Average wind speed in September
Le Sappey-en-Chartreuse, France
- Average wind speed in September: 6.2km/h
The windiest month (with the highest average wind speed) is February (8km/h).
The calmest month (with the lowest average wind speed) is September (6.2km/h).
Average humidity in September
Le Sappey-en-Chartreuse, France
- Average humidity in September: 79%
The month with the highest relative humidity is January (84%).
The month with the lowest relative humidity is August (74%).
Average rainfall in September
Le Sappey-en-Chartreuse, France
- Average rainfall in September: 23mm
The wettest month (with the highest rainfall) is December (50mm).
The driest month (with the least rainfall) is September (23mm).
Average rainfall days in September
Le Sappey-en-Chartreuse, France
- Average rainfall days in September: 10.6 days
The month with the highest number of rainy days is May (15.6 days).
The month with the least rainy days is February (5.3 days).
Average snowfall in September
Le Sappey-en-Chartreuse, France
- Average snowfall in September: 0mm
The month with the highest snowfall is December (197mm).
The months with the least snowfall are June, July, August and September (0mm).
Average snowfall days in September
Le Sappey-en-Chartreuse, France
- Average snowfall days in September: 0.1 days
The month with the highest number of snowfall days is January (12.5 days).
The months with the least snowfall days are June, July and August (0 days).
Average daylight in September /
Average sunshine in September
Le Sappey-en-Chartreuse, France
- Average daylight in September: 12h and 3min
The month with the longest days is June (Average daylight: 15h and 36min).
The month with the shortest days is December (Average daylight: 8h and 48min).
- Average sunshine in September: 8h and 5min
The months with the most sunshine are July and August (Average sunshine: 11h and 0min).
The months with the least sunshine are January and December (Average sunshine: 5h and 30min).
Average sunshine days in September
Le Sappey-en-Chartreuse, France
- Average sunshine days in September: 16.1 days
The month with the most sunshine days is October (17.8 days).
The month with the least sunshine days is May (11.9 days).
Average UV index in September
Le Sappey-en-Chartreuse, 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, March, November and December (UV index 2).
Average cloud cover in September
Le Sappey-en-Chartreuse, France
- Average cloud cover in September: 31
The months with the most cloud cover are January and February (Cloud cover 42).
The month with the least cloud cover is August (Cloud cover 25).
Average visibility in September
Le Sappey-en-Chartreuse, France
- Average visibility in September: 8km
The months with the highest visibility are March and August (9km).
The months with the lowest visibility are January, February, April, May, June, July, September, October, November and December (8km).
Le Sappey-en-Chartreuse, France
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