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
A subtle change in temperatures is noted as August gives way to September, with average highs reducing from an agreeable 22.4°C (72.3°F) to a refreshing 18.3°C (64.9°F). Bienno experiences an average nighttime temperature of 10.4°C (50.7°F) in the month of September.Humidity
In September, the average relative humidity is 80%.Rainfall
In Bienno, during September, the rain falls for 20.6 days and regularly aggregates up to 98mm (3.86") of precipitation. Throughout the year, there are 210.8 rainfall days, and 1353mm (53.27") of precipitation is accumulated.Snowfall
June through September are months without snowfall in Bienno.Daylight
In September, the average length of the day in Bienno is 12h and 32min.On the first day of September, sunrise is at 06:40 and sunset at 19:57. On the last day of the month, sunrise is at 07:16 and sunset at 19:00 CEST.
Sunshine
In Bienno, the average sunshine in September is 9.5h.UV index
The average daily maximum UV index in September in Bienno is 4. A UV Index estimate of 3 to 5 represents a moderate health risk from exposure to the Sun's UV rays for the average person.Note: The daily high UV index of 4 during September translates into the following recommendations:
Put precautions into practice - Guidance to elude sunburn is provided. Avoiding the Sun's peak radiation during midday hours is essential for health and safety. Wearing sunglasses with both UVA and UVB protection effectively reduces sun-induced eye damage.
Frequently asked questions
What are September temperatures in Bienno?
What is the average humidity in September in Bienno?
How much does it rain in Bienno in September?
When it does not snow in Bienno?
Does it snow in Bienno in September?
What is the average length of the day in September in Bienno?
When is the sunrise / sunset in September in Bienno?
How many hours of sunshine does Bienno have in September?
What is the UV index reading in September in Bienno?
Average temperature in September
Bienno, Italy
- Average high temperature in September: 18.3°C
The warmest month (with the highest average high temperature) is August (22.4°C).
The month with the lowest average high temperature is January (3°C).
- Average low temperature in September: 10.4°C
The month with the highest average low temperature is August (13.8°C).
The coldest month (with the lowest average low temperature) is January (-2.8°C).
Average pressure in September
Bienno, Italy
- Average pressure in September: 1017.1mbar
The month with the highest atmospheric pressure is December (1020mbar).
The month with the lowest atmospheric pressure is May (1014.8mbar).
Average wind speed in September
Bienno, Italy
- Average wind speed in September: 6.3km/h
The windiest month (with the highest average wind speed) is March (7.3km/h).
The calmest month (with the lowest average wind speed) is October (6km/h).
Average humidity in September
Bienno, Italy
- Average humidity in September: 80%
The month with the highest relative humidity is November (82%).
The month with the lowest relative humidity is December (75%).
Average rainfall in September
Bienno, Italy
- Average rainfall in September: 98mm
The wettest month (with the highest rainfall) is June (170mm).
The driest month (with the least rainfall) is January (42mm).
Average rainfall days in September
Bienno, Italy
- Average rainfall days in September: 20.6 days
The month with the highest number of rainy days is July (27.1 days).
The month with the least rainy days is January (5.8 days).
Average snowfall in September
Bienno, Italy
- Average snowfall in September: 0mm
The month with the highest snowfall is February (344mm).
The months with the least snowfall are June, July, August and September (0mm).
Average snowfall days in September
Bienno, Italy
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (11.8 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Bienno, Italy
- 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 3min
The month with the most sunshine is July (Average sunshine: 11h and 0min).
The month with the least sunshine is November (Average sunshine: 5h and 18min).
Average sunshine days in September
Bienno, Italy
- Average sunshine days in September: 6.1 days
The month with the most sunshine days is December (19.6 days).
The month with the least sunshine days is June (1.2 days).
Average UV index in September
Bienno, Italy
- 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, October, November and December (UV index 2).
Average cloud cover in September
Bienno, Italy
- Average cloud cover in September: 32
The month with the most cloud cover is November (Cloud cover 44).
The months with the least cloud cover are July and August (Cloud cover 27).
Average visibility in September
Bienno, Italy
- Average visibility in September: 9km
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October and December (9km).
The month with the lowest visibility is November (8km).
Bienno, Italy
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