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
September is characterized by a slight reduction in average high-temperature, easing from a warm 24.2°C (75.6°F) in August to an enjoyable 19.5°C (67.1°F). Nighttime temperatures in September average to a fresh 10.4°C (50.7°F).Humidity
In Ballabio, Italy, the average relative humidity in September is 77%.Rainfall
In September, in Ballabio, the rain falls for 16 days. Throughout September, 75mm (2.95") of precipitation is accumulated. In Ballabio, during the entire year, the rain falls for 192.7 days and collects up to 1242mm (48.9") of precipitation.Snowfall
Months with snowfall in Ballabio are January through March, September, November and December. September is the first month it typically snows in Ballabio. Throughout September, in the average 0.1 snowfall days, it receives 1mm (0.04") of snow. Throughout the year, there are 10.2 snowfall days, and 132mm (5.2") of snow is accumulated.Daylight
The average length of the day in September is 12h and 32min.On the first day of the month, sunrise is at 06:43 and sunset at 20:00. On the last day of September, in Ballabio, sunrise is at 07:20 and sunset at 19:04 CEST.
Sunshine
In Ballabio, the average sunshine in September is 9.7h.UV index
In September, the average daily maximum UV index in Ballabio, Italy, is 4. A UV Index reading of 3 to 5 represents a medium vulnerability from exposure to the Sun's UV rays for the average person.Note: The maximum daily UV index of 4 in September converts into the following recommendations:
Adopt protective measures - It is advised to guard against sun damage. The Sun is at its harshest during midday; protect yourself by staying in shaded areas and minimizing exposure. To best shield against UV radiation, choose sun-safe garments and dependable sunglasses. Stay alert! Snow's reflective properties 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 Ballabio?
What is the average humidity in September in Ballabio?
How many days does it rain in September in Ballabio?
When does it start to snow in Ballabio?
How many hours of daylight does Ballabio have in September?
What time are sunrise and sunset in September in Ballabio?
How many hours of sunshine does Ballabio have in September?
What is the UV index intensity in September in Ballabio?
Average temperature in September
Ballabio, Italy
- Average high temperature in September: 19.5°C
The warmest month (with the highest average high temperature) is July (24.8°C).
The month with the lowest average high temperature is January (3.6°C).
- Average low temperature in September: 10.4°C
The months with the highest average low temperature are July and August (14.2°C).
The coldest month (with the lowest average low temperature) is January (-2.3°C).
Average pressure in September
Ballabio, Italy
- Average pressure in September: 1017.4mbar
The month with the highest atmospheric pressure is December (1020.2mbar).
The months with the lowest atmospheric pressure are April and May (1014.9mbar).
Average wind speed in September
Ballabio, Italy
- Average wind speed in September: 5.9km/h
The windiest months (with the highest average wind speed) are March and May (6.6km/h).
The calmest month (with the lowest average wind speed) is November (5.4km/h).
Average humidity in September
Ballabio, Italy
- Average humidity in September: 77%
The month with the highest relative humidity is November (81%).
The month with the lowest relative humidity is July (73%).
Average rainfall in September
Ballabio, Italy
- Average rainfall in September: 75mm
The wettest month (with the highest rainfall) is November (162mm).
The driest month (with the least rainfall) is January (38mm).
Average rainfall days in September
Ballabio, Italy
- Average rainfall days in September: 16 days
The month with the highest number of rainy days is May (23.2 days).
The month with the least rainy days is January (9.7 days).
Average snowfall in September
Ballabio, Italy
- Average snowfall in September: 1mm
The month with the highest snowfall is December (36mm).
The months with the least snowfall are April, May, June, July, August and October (0mm).
Average snowfall days in September
Ballabio, Italy
- Average snowfall days in September: 0.1 days
The month with the highest number of snowfall days is January (2.8 days).
The months with the least snowfall days are May, June, July, August and October (0 days).
Average daylight in September /
Average sunshine in September
Ballabio, 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 4min
The month with the most sunshine is July (Average sunshine: 11h and 24min).
The month with the least sunshine is November (Average sunshine: 5h and 18min).
Average sunshine days in September
Ballabio, Italy
- Average sunshine days in September: 11.9 days
The months with the most sunshine days are January and December (18.3 days).
The month with the least sunshine days is May (5.1 days).
Average UV index in September
Ballabio, Italy
- 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
Ballabio, Italy
- Average cloud cover in September: 29
The month with the most cloud cover is November (Cloud cover 43).
The month with the least cloud cover is July (Cloud cover 24).
Average visibility in September
Ballabio, Italy
- Average visibility in September: 9km
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (9km).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (9km).
