September weather forecastPerlen, Switzerland
September
Weather in September
September, the first month of the autumn in Perlen, is still a refreshing month, with an average temperature ranging between max 17.5°C (63.5°F) and min 7.5°C (45.5°F).Temperature
The start of September involves a subtle temperature drop, shifting from a pleasant 22.1°C (71.8°F) in August to an enjoyable 17.5°C (63.5°F). Perlen in September anticipates an average nighttime temperature of 7.5°C (45.5°F).Humidity
In September, the average relative humidity is 80%.Rainfall
September is the month with the least rainfall in Perlen. Rain falls for 14.3 days and accumulates 52mm (2.05") of precipitation.Snowfall
June through September are months without snowfall.Daylight
In Perlen, the average length of the day in September is 12h and 34min.On the first day of September, sunrise is at 06:46 and sunset at 20:06. On the last day of the month, sunrise is at 07:24 and sunset at 19:08 CEST.
Sunshine
The average sunshine in September in Perlen is 8.9h.UV index
In Perlen, the average daily maximum UV index in September is 4. A UV Index of 3 to 5 symbolizes a moderate health risk from unprotected exposure to Sun's UV rays for the average person.Note: In September, the average maximum UV index of 4 translates into the following recommendations:
Ensure safety - Sun damage prevention is strongly urged. Given the potency of the midday Sun's UV radiation, one should avoid prolonged exposure. Stay sun-safe with clothing that is both closely woven and worn loosely.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Perlen, Switzerland
- Average high temperature in September: 17.5°C
The warmest month (with the highest average high temperature) is August (22.1°C).
The month with the lowest average high temperature is January (2.2°C).
- Average low temperature in September: 7.5°C
The month with the highest average low temperature is August (10.9°C).
The coldest month (with the lowest average low temperature) is February (-4.9°C).
Average pressure in September
Perlen, Switzerland
- Average pressure in September: 1018.5mbar
The month with the highest atmospheric pressure is December (1020.9mbar).
The month with the lowest atmospheric pressure is April (1015.6mbar).
Average wind speed in September
Perlen, Switzerland
- Average wind speed in September: 6.3km/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
Perlen, Switzerland
- Average humidity in September: 80%
The months with the highest relative humidity are January and February (86%).
The months with the lowest relative humidity are July and August (77%).
Average rainfall in September
Perlen, Switzerland
- Average rainfall in September: 52mm
The wettest month (with the highest rainfall) is July (121mm).
The driest month (with the least rainfall) is September (52mm).
Average rainfall days in September
Perlen, Switzerland
- Average rainfall days in September: 14.3 days
The month with the highest number of rainy days is May (21.5 days).
The month with the least rainy days is October (11.2 days).
Average snowfall in September
Perlen, Switzerland
- Average snowfall in September: 0mm
The month with the highest snowfall is February (169mm).
The months with the least snowfall are June, July, August and September (0mm).
Average snowfall days in September
Perlen, Switzerland
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (9.2 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Perlen, Switzerland
- Average daylight in September: 12h and 36min
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 54min
The month with the most sunshine is July (Average sunshine: 10h and 18min).
The month with the least sunshine is December (Average sunshine: 5h and 24min).
Average sunshine days in September
Perlen, Switzerland
- Average sunshine days in September: 13 days
The month with the most sunshine days is October (18.4 days).
The month with the least sunshine days is June (7.3 days).
Average UV index in September
Perlen, Switzerland
- 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
Perlen, Switzerland
- Average cloud cover in September: 34
The month with the most cloud cover is February (Cloud cover 44).
The month with the least cloud cover is August (Cloud cover 33).
Average visibility in September
Perlen, Switzerland
- Average visibility in September: 8km
The months with the highest visibility are February, March, April, May, June, July, August, September, October, November and December (8km).
The month with the lowest visibility is January (7km).
