September weather forecastArdon, Switzerland
September
Weather in September
The first month of the autumn, September, is still a cool month in Ardon, Switzerland, with an average temperature varying between 3.6°C (38.5°F) and 12.7°C (54.9°F).Temperature
September's arrival subtly correlates with a reduction in the average high-temperature, down from a refreshing 17°C (62.6°F) in August to a cool 12.7°C (54.9°F). Ardon observes an average low-temperature of 3.6°C (38.5°F) during September.Humidity
In Ardon, the average relative humidity in September is 81%.Rainfall
September is the month with the least rainfall in Ardon, Switzerland. Rain falls for 17.1 days and accumulates 45mm (1.77") of precipitation.Snowfall
January through May, September through December are months with snowfall. September is the first month it typically snows. Throughout September, in the average 0.1 snowfall days, it receives 1mm (0.04") of snow. In Ardon, Switzerland, during the entire year, snow falls for 35.6 days and aggregates up to 419mm (16.5") of snow.Daylight
In Ardon, the average length of the day in September is 12h and 32min.On the first day of the month, sunrise is at 06:52 and sunset at 20:09. On the last day of September, sunrise is at 07:28 and sunset at 19:12 CEST.
Sunshine
In September, the average sunshine is 8.4h.UV index
In September, the average daily maximum UV index is 3. A UV Index value of 3 to 5 symbolizes a medium health hazard from unprotected exposure to Sun's UV rays for the ordinary person.Note: During September, 3 as the daily maximum UV index converts into the following advice:
Be vigilant - A duty to shield skin and eyes from injury exists. Protect yourself from the midday Sun's peak UV radiation by minimizing exposure. Sun-related eye harm can be minimized with proper sunglasses offering UVA and UVB coverage. Take careful note! The UV radiation of the Sun can be nearly doubled by snow reflection.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Ardon, Switzerland
- Average high temperature in September: 12.7°C
The warmest month (with the highest average high temperature) is August (17°C).
The month with the lowest average high temperature is January (-2.2°C).
- Average low temperature in September: 3.6°C
The months with the highest average low temperature are July and August (6.4°C).
The coldest month (with the lowest average low temperature) is February (-10.8°C).
Average pressure in September
Ardon, Switzerland
- Average pressure in September: 1018.2mbar
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
Ardon, Switzerland
- Average wind speed in September: 6.5km/h
The windiest month (with the highest average wind speed) is December (8.3km/h).
The calmest month (with the lowest average wind speed) is August (6.2km/h).
Average humidity in September
Ardon, Switzerland
- Average humidity in September: 81%
The month with the highest relative humidity is March (90%).
The months with the lowest relative humidity are July, August and October (79%).
Average rainfall in September
Ardon, Switzerland
- Average rainfall in September: 45mm
The wettest month (with the highest rainfall) is May (110mm).
The driest month (with the least rainfall) is September (45mm).
Average rainfall days in September
Ardon, Switzerland
- Average rainfall days in September: 17.1 days
The month with the highest number of rainy days is May (23.3 days).
The month with the least rainy days is January (11.8 days).
Average snowfall in September
Ardon, Switzerland
- Average snowfall in September: 1mm
The month with the highest snowfall is January (110mm).
The months with the least snowfall are June, July and August (0mm).
Average snowfall days in September
Ardon, Switzerland
- Average snowfall days in September: 0.1 days
The month with the highest number of snowfall days is January (8.8 days).
The months with the least snowfall days are June, July and August (0 days).
Average daylight in September /
Average sunshine in September
Ardon, Switzerland
- 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 24min
The months with the most sunshine are July and August (Average sunshine: 10h and 0min).
The month with the least sunshine is January (Average sunshine: 5h and 0min).
Average sunshine days in September
Ardon, Switzerland
- Average sunshine days in September: 9.4 days
The month with the most sunshine days is October (15.3 days).
The month with the least sunshine days is May (4.7 days).
Average UV index in September
Ardon, Switzerland
- Average UV index in September: 3
The months with the highest UV index are June and July (UV index 4).
The months with the lowest UV index are January and March (UV index 1).
Average cloud cover in September
Ardon, Switzerland
- Average cloud cover in September: 40
The months with the most cloud cover are February and March (Cloud cover 51).
The month with the least cloud cover is October (Cloud cover 36).
Average visibility in September
Ardon, Switzerland
- Average visibility in September: 7km
The months with the highest visibility are June, July, August, October, November and December (8km).
The months with the lowest visibility are January, February, March, April, May and September (7km).
