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 onset of September results in a small decrease in the average high-temperature, moderately receding from a moderate 14.7°C (58.5°F) in August to a cool 10.5°C (50.9°F). Throughout the month of September, Bormio witnesses an average low-temperature of 1.4°C (34.5°F).Humidity
In September, the average relative humidity is 84%.Rainfall
In Bormio, during September, the rain falls for 17.5 days and regularly aggregates up to 70mm (2.76") of precipitation. Throughout the year, in Bormio, there are 176.2 rainfall days, and 842mm (33.15") of precipitation is accumulated.Snowfall
Months with snowfall are January through May, September through December. September is the first month it typically snows in Bormio. Throughout September, in the average 0.2 snowfall days, it receives 7mm (0.28") of snow. In Bormio, during the entire year, snow falls for 83.5 days and aggregates up to 1438mm (56.61") of snow.Daylight
The average length of the day in September is 12h and 33min.On the first day of September, sunrise is at 06:39 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 September, the average sunshine is 8.1h.UV index
In Bormio, Italy, the average daily maximum UV index in September is 2. A UV Index value of 2, and less, symbolizes a minimal health hazard from unprotected exposure to Sun's UV rays for the average person.Note: In September, a daily UV index of 2 turns into the following recommendations:
Prolonged exposure to sunlight rarely troubles the majority, but constant protection is vital for babies, children, and fair-skinned people. The solar radiation around mid-day is intense; avoid the Sun and stay safe. A hat with a generous brim can prevent nearly 50% of UV rays from reaching your eyes. Be mindful! The reflection from snow can increase the Sun's UV radiation nearly twice.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the temperature in September in Bormio?
What is the average humidity in September in Bormio?
How many days does it rain in September in Bormio?
When does it start snowing in Bormio?
How many hours of daylight does Bormio have in September?
What time are sunrise and sunset in September in Bormio?
How many hours of sunshine does Bormio have in September?
How high is the UV index in September in Bormio?
Average temperature in September
Bormio, Italy
- Average high temperature in September: 10.5°C
The warmest month (with the highest average high temperature) is July (14.9°C).
The month with the lowest average high temperature is January (-4.8°C).
- Average low temperature in September: 1.4°C
The month with the highest average low temperature is August (4.8°C).
The coldest months (with the lowest average low temperature) are January and February (-13.9°C).
Average pressure in September
Bormio, Italy
- Average pressure in September: 1017.9mbar
The month with the highest atmospheric pressure is December (1020.5mbar).
The month with the lowest atmospheric pressure is April (1015.3mbar).
Average wind speed in September
Bormio, Italy
- Average wind speed in September: 6.8km/h
The windiest month (with the highest average wind speed) is December (9.2km/h).
The calmest month (with the lowest average wind speed) is August (6.5km/h).
Average humidity in September
Bormio, Italy
- Average humidity in September: 84%
The month with the highest relative humidity is April (94%).
The month with the lowest relative humidity is July (80%).
Average rainfall in September
Bormio, Italy
- Average rainfall in September: 70mm
The wettest month (with the highest rainfall) is August (121mm).
The driest month (with the least rainfall) is January (27mm).
Average rainfall days in September
Bormio, Italy
- Average rainfall days in September: 17.5 days
The month with the highest number of rainy days is July (23.5 days).
The month with the least rainy days is January (4.8 days).
Average snowfall in September
Bormio, Italy
- Average snowfall in September: 7mm
The month with the highest snowfall is November (309mm).
The months with the least snowfall are June, July and August (0mm).
Average snowfall days in September
Bormio, Italy
- Average snowfall days in September: 0.2 days
The month with the highest number of snowfall days is February (16.8 days).
The months with the least snowfall days are June, July and August (0 days).
Average daylight in September /
Average sunshine in September
Bormio, Italy
- Average daylight in September: 12h and 3min
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 42min).
- Average sunshine in September: 8h and 1min
The month with the most sunshine is July (Average sunshine: 10h and 0min).
The month with the least sunshine is November (Average sunshine: 3h and 42min).
Average sunshine days in September
Bormio, Italy
- Average sunshine days in September: 9.4 days
The month with the most sunshine days is December (16.3 days).
The months with the least sunshine days are June and July (4.8 days).
Average UV index in September
Bormio, Italy
- Average UV index in September: 2
The months with the highest UV index are June and July (UV index 3).
The months with the lowest UV index are January, February, March, April, October and November (UV index 1).
Average cloud cover in September
Bormio, Italy
- Average cloud cover in September: 52
The month with the most cloud cover is April (Cloud cover 67).
The month with the least cloud cover is July (Cloud cover 47).
Average visibility in September
Bormio, Italy
- Average visibility in September: 7km
The month with the highest visibility is July (8km).
The months with the lowest visibility are March, April and May (5km).
Bormio, Italy
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