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
September
Weather in September
Temperature
The transition into September is accompanied by a slight temperature decrease, with the average high-temperature shifting from a moderately hot 23°C (73.4°F) in August to a refreshing 18.7°C (65.7°F). In Perrefitte, September is marked by an average low-temperature of 8.3°C (46.9°F).Humidity
The average relative humidity in September is 82%.Rainfall
September is the month with the least rainfall in Perrefitte. Rain falls for 15 days and accumulates 46mm (1.81") of precipitation.Snowfall
January through May, September through December are months with snowfall in Perrefitte. 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 Perrefitte, during the entire year, snow falls for 37.6 days and aggregates up to 557mm (21.93") of snow.Daylight
In September, the average length of the day in Perrefitte, Switzerland, is 12h and 34min.On the first day of the month, sunrise is at 06:50 and sunset at 20:10. On the last day of September, in Perrefitte, Switzerland, sunrise is at 07:28 and sunset at 19:12 CEST.
Sunshine
In September, the average sunshine in Perrefitte is 8.6h.UV index
The average daily maximum UV index in September in Perrefitte is 4. A UV Index reading of 3 to 5 represents a moderate health risk from exposure to the Sun's UV rays for ordinary individuals.Note: In September, the maximum UV index of 4 suggests this advice:
Ensure safety - Sun damage prevention is strongly urged. To avoid the Sun's strongest rays, limit exposure around the mid-day period. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects. Guard yourself! Snow reflection can almost double the UV radiation from the Sun.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are September temperatures in Perrefitte?
What is the average humidity in September in Perrefitte?
What is the driest month in Perrefitte?
How many days does it rain in September in Perrefitte?
When does it start snowing in Perrefitte?
What is the average length of the day in September in Perrefitte?
What time are sunrise and sunset in September in Perrefitte?
How long on average sun shines in September in Perrefitte?
How high is the UV index in September in Perrefitte?
Average temperature in September
Perrefitte, Switzerland
- Average high temperature in September: 18.7°C
The warmest month (with the highest average high temperature) is July (23.1°C).
The month with the lowest average high temperature is January (2.7°C).
- Average low temperature in September: 8.3°C
The month with the highest average low temperature is July (11.9°C).
The coldest months (with the lowest average low temperature) are January and February (-2.8°C).
Average pressure in September
Perrefitte, Switzerland
- Average pressure in September: 1018.6mbar
The month with the highest atmospheric pressure is December (1021mbar).
The month with the lowest atmospheric pressure is April (1015.6mbar).
Average wind speed in September
Perrefitte, Switzerland
- Average wind speed in September: 7.2km/h
The windiest month (with the highest average wind speed) is February (10.2km/h).
The calmest month (with the lowest average wind speed) is August (6.3km/h).
Average humidity in September
Perrefitte, 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, July and August (79%).
Average rainfall in September
Perrefitte, Switzerland
- Average rainfall in September: 46mm
The wettest month (with the highest rainfall) is June (97mm).
The driest month (with the least rainfall) is September (46mm).
Average rainfall days in September
Perrefitte, Switzerland
- Average rainfall days in September: 15 days
The month with the highest number of rainy days is May (21.9 days).
The month with the least rainy days is February (12.3 days).
Average snowfall in September
Perrefitte, Switzerland
- Average snowfall in September: 1mm
The month with the highest snowfall is February (133mm).
The months with the least snowfall are June, July and August (0mm).
Average snowfall days in September
Perrefitte, Switzerland
- Average snowfall days in September: 0.1 days
The month with the highest number of snowfall days is January (9.6 days).
The months with the least snowfall days are June, July and August (0 days).
Average daylight in September /
Average sunshine in September
Perrefitte, Switzerland
- Average daylight in September: 12h and 4min
The month with the longest days is June (Average daylight: 15h and 54min).
The month with the shortest days is December (Average daylight: 8h and 36min).
- Average sunshine in September: 8h and 4min
The month with the most sunshine is August (Average sunshine: 10h and 18min).
The month with the least sunshine is December (Average sunshine: 4h and 54min).
Average sunshine days in September
Perrefitte, Switzerland
- Average sunshine days in September: 12.1 days
The month with the most sunshine days is October (14.1 days).
The month with the least sunshine days is May (6.7 days).
Average UV index in September
Perrefitte, 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, November and December (UV index 2).
Average cloud cover in September
Perrefitte, Switzerland
- Average cloud cover in September: 37
The months with the most cloud cover are January, February and December (Cloud cover 49).
The month with the least cloud cover is August (Cloud cover 32).
Average visibility in September
Perrefitte, Switzerland
- Average visibility in September: 8km
The months with the highest visibility are March, April, July and August (9km).
The months with the lowest visibility are January, February, May, June, September, October, November and December (8km).
