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
The transition into September involves a small decrease in the average high-temperature, dipping slightly from a moderately hot 24.6°C (76.3°F) in August to a pleasant 20.2°C (68.4°F). Viganello observes an average low-temperature of 9.3°C (48.7°F) during September.Humidity
In Viganello, the average relative humidity in September is 76%.Rainfall
In Viganello, in September, it is raining for 8.3 days, with typically 16mm (0.63") of accumulated precipitation. In Viganello, during the entire year, the rain falls for 102.6 days and collects up to 414mm (16.3") of precipitation.Snowfall
In Viganello, snow does not fall in April through October.Daylight
In September, the average length of the day in Viganello is 12h and 32min.On the first day of September in Viganello, sunrise is at 06:45 and sunset at 20:02. On the last day of the month, sunrise is at 07:21 and sunset at 19:06 CEST.
Sunshine
The average sunshine in September is 9.2h.UV index
In Viganello, the average daily maximum UV index in September is 4. A UV Index of 3 to 5 symbolizes a moderate threat to health from unsafe exposure to UV radiation for the average person.Note: In September, the maximum UV index of 4 translates into these guidelines:
Be cautious. Those with fair skin can be subjected to burns in fewer than 30 minutes. Considering the strength of solar radiation at midday, one should avoid direct Sun exposure. A hat with a generous brim can prevent nearly 50% of UV rays from reaching your eyes.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are the temperatures in Viganello in September?
What is the average humidity in September in Viganello?
How much does it rain in Viganello in September?
When it does not snow in Viganello?
What is the average length of the day in September in Viganello?
When are sunrise and sunset in September in Viganello?
How many hours of sunshine does Viganello have in September?
How high is the UV index in September in Viganello?
Average temperature in September
Viganello, Switzerland
- Average high temperature in September: 20.2°C
The warmest month (with the highest average high temperature) is July (25.2°C).
The month with the lowest average high temperature is January (4.5°C).
- Average low temperature in September: 9.3°C
The months with the highest average low temperature are July and August (12.8°C).
The coldest month (with the lowest average low temperature) is January (-2.3°C).
Average pressure in September
Viganello, Switzerland
- Average pressure in September: 1017.7mbar
The month with the highest atmospheric pressure is December (1020.5mbar).
The month with the lowest atmospheric pressure is April (1015mbar).
Average wind speed in September
Viganello, Switzerland
- Average wind speed in September: 7km/h
The windiest month (with the highest average wind speed) is July (7.7km/h).
The calmest month (with the lowest average wind speed) is November (6.1km/h).
Average humidity in September
Viganello, Switzerland
- Average humidity in September: 76%
The month with the highest relative humidity is November (80%).
The months with the lowest relative humidity are January and July (72%).
Average rainfall in September
Viganello, Switzerland
- Average rainfall in September: 16mm
The wettest month (with the highest rainfall) is November (70mm).
The driest month (with the least rainfall) is January (7mm).
Average rainfall days in September
Viganello, Switzerland
- Average rainfall days in September: 8.3 days
The month with the highest number of rainy days is May (11.8 days).
The month with the least rainy days is December (4.1 days).
Average snowfall in September
Viganello, Switzerland
- Average snowfall in September: 0mm
The month with the highest snowfall is February (9mm).
The months with the least snowfall are April, May, June, July, August, September and October (0mm).
Average snowfall days in September
Viganello, Switzerland
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (1 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).
Average daylight in September /
Average sunshine in September
Viganello, Switzerland
- Average daylight in September: 12h and 3min
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: 9h and 1min
The month with the most sunshine is July (Average sunshine: 11h and 30min).
The month with the least sunshine is November (Average sunshine: 5h and 18min).
Average sunshine days in September
Viganello, Switzerland
- Average sunshine days in September: 19.6 days
The month with the most sunshine days is December (25.8 days).
The month with the least sunshine days is June (16.9 days).
Average UV index in September
Viganello, Switzerland
- Average UV index in September: 4
The months with the highest UV index are June, July and August (UV index 5).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in September
Viganello, Switzerland
- Average cloud cover in September: 31
The month with the most cloud cover is November (Cloud cover 42).
The month with the least cloud cover is July (Cloud cover 23).
Average visibility in September
Viganello, Switzerland
- Average visibility in September: 9km
The months with the highest visibility are January, February, March, April, May, June, July, August, September, November and December (9km).
The month with the lowest visibility is October (8km).
Viganello, Switzerland
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