September weather forecastLes Clefs, France
September
Weather in September
September, the first month of the autumn in Les Clefs, is still a comfortable month, with an average temperature fluctuating between 6.3°C (43.3°F) and 16.8°C (62.2°F).Temperature
Les Clefs's September weather shows a modest shift in high-temperatures, falling from August's pleasant 21°C (69.8°F) to an enjoyable 16.8°C (62.2°F). In Les Clefs, September's nights observe an average temperature dip to a chilly 6.3°C (43.3°F).Humidity
In Les Clefs, France, the average relative humidity in September is 80%.Rainfall
September is the month with the least rainfall in Les Clefs, France. Rain falls for 11.1 days and accumulates 26mm (1.02") of precipitation.Snowfall
In Les Clefs, France, snow does not fall in July through September.Daylight
The average length of the day in September is 12h and 32min.On the first day of the month, sunrise is at 06:56 and sunset at 20:12. On the last day of September, sunrise is at 07:32 and sunset at 19:16 CEST.
Sunshine
In Les Clefs, the average sunshine in September is 8.7h.UV index
In Les Clefs, the average daily maximum UV index in September is 3. A UV Index value of 3 to 5 symbolizes a moderate health risk from unprotected exposure to Sun's UV rays for ordinary individuals.Note: A maximum daily UV index of 3 during September morphs into the following directions:
Act with care - The suggestion to avoid sunburn is emphasized. Limiting exposure to the direct Sun during midday hours can help prevent harmful UV radiation effects. Stay sun-safe with clothing that is both closely woven and worn loosely. Take heed! Reflection from the snow can almost amplify the Sun's UV radiation by double.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Les Clefs, France
- Average high temperature in September: 16.8°C
The warmest month (with the highest average high temperature) is August (21°C).
The month with the lowest average high temperature is January (0.9°C).
- Average low temperature in September: 6.3°C
The month with the highest average low temperature is August (9.5°C).
The coldest month (with the lowest average low temperature) is February (-7.3°C).
Average pressure in September
Les Clefs, France
- Average pressure in September: 1018.3mbar
The month with the highest atmospheric pressure is December (1021mbar).
The month with the lowest atmospheric pressure is April (1015.2mbar).
Average wind speed in September
Les Clefs, France
- Average wind speed in September: 6.2km/h
The windiest month (with the highest average wind speed) is December (7.9km/h).
The calmest months (with the lowest average wind speed) are August and September (6.2km/h).
Average humidity in September
Les Clefs, France
- Average humidity in September: 80%
The month with the highest relative humidity is February (88%).
The month with the lowest relative humidity is August (76%).
Average rainfall in September
Les Clefs, France
- Average rainfall in September: 26mm
The wettest month (with the highest rainfall) is May (76mm).
The driest month (with the least rainfall) is September (26mm).
Average rainfall days in September
Les Clefs, France
- Average rainfall days in September: 11.1 days
The month with the highest number of rainy days is June (16.8 days).
The month with the least rainy days is February (4.6 days).
Average snowfall in September
Les Clefs, France
- Average snowfall in September: 0mm
The month with the highest snowfall is January (298mm).
The months with the least snowfall are July, August and September (0mm).
Average snowfall days in September
Les Clefs, France
- Average snowfall days in September: 0.3 days
The month with the highest number of snowfall days is January (11.9 days).
The months with the least snowfall days are July and August (0 days).
Average daylight in September /
Average sunshine in September
Les Clefs, France
- Average daylight in September: 12h and 30min
The month with the longest days is June (Average daylight: 15h and 42min).
The month with the shortest days is December (Average daylight: 8h and 42min).
- Average sunshine in September: 8h and 42min
The month with the most sunshine is August (Average sunshine: 10h and 42min).
The month with the least sunshine is December (Average sunshine: 5h and 18min).
Average sunshine days in September
Les Clefs, France
- Average sunshine days in September: 16.4 days
The month with the most sunshine days is October (20.6 days).
The month with the least sunshine days is June (10.7 days).
Average UV index in September
Les Clefs, France
- 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
Les Clefs, France
- Average cloud cover in September: 34
The month with the most cloud cover is December (Cloud cover 43).
The month with the least cloud cover is August (Cloud cover 29).
Average visibility in September
Les Clefs, France
- Average visibility in September: 8km
The months with the highest visibility are March, April, May, June, July, August, September, October, November and December (8km).
The months with the lowest visibility are January and February (7km).
