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's arrival coincides with a soft drop in the average high-temperature, subtly decreasing from August's mild 15.7°C (60.3°F) to a fresh 11.5°C (52.7°F). In September, the nighttime temperature lowers to an average of 1.9°C (35.4°F).Humidity
In Stelvio, the average relative humidity in September is 81%.Rainfall
In Stelvio, Italy, during September, the rain falls for 10.4 days and regularly aggregates up to 45mm (1.77") of precipitation. Throughout the year, there are 98.2 rainfall days, and 536mm (21.1") of precipitation is accumulated.Snowfall
Months with snowfall in Stelvio are January through December. In Stelvio, in September, snow falls for 5.7 days, with typically accumulated 172mm (6.77") of snow. Throughout the year, in Stelvio, there are 127 snowfall days, and 2549mm (100.35") of snow is accumulated.Daylight
In Stelvio, the average length of the day in September is 12h and 33min.On the first day of the month, sunrise is at 06:38 and sunset at 19:56. On the last day of September, sunrise is at 07:15 and sunset at 18:59 CEST.
Sunshine
In September, the average sunshine in Stelvio is 8.8h.UV index
The months with the highest UV index in Stelvio are June through September, with an average maximum UV index of 3. A UV Index of 3 to 5 symbolizes a moderate health risk from unprotected exposure to Sun's UV rays for average individuals.Note: A maximum daily UV index of 3 during September morphs into the following directions:
Exercise caution. The susceptibility of light skin individuals to burns is less than 30 minutes. UV radiation from the Sun is most dangerous during midday; take precautions and seek shade. Protect your eyes, ears, face, and neck from the Sun by wearing a wide-brimmed hat. Be careful! The Sun's UV radiation can nearly be doubled by the reflective quality of snow.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are the temperatures in Stelvio in September?
What is the average humidity in September in Stelvio?
How many days does it rain in September in Stelvio?
How many days does it snow in September in Stelvio?
How many hours of daylight does Stelvio have in September?
What time are sunrise and sunset in September in Stelvio?
How many hours of sunshine does Stelvio have in September?
When is the highest UV index in Stelvio?
What is the UV index intensity in September in Stelvio?
Average temperature in September
Stelvio, Italy
- Average high temperature in September: 11.5°C
The warmest month (with the highest average high temperature) is July (15.8°C).
The month with the lowest average high temperature is January (-4.2°C).
- Average low temperature in September: 1.9°C
The month with the highest average low temperature is August (5.3°C).
The coldest month (with the lowest average low temperature) is January (-12.9°C).
Average pressure in September
Stelvio, Italy
- Average pressure in September: 1018mbar
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
Stelvio, Italy
- Average wind speed in September: 6.4km/h
The windiest months (with the highest average wind speed) are February and December (8.8km/h).
The calmest month (with the lowest average wind speed) is August (6.1km/h).
Average humidity in September
Stelvio, Italy
- Average humidity in September: 81%
The months with the highest relative humidity are March and April (91%).
The month with the lowest relative humidity is July (78%).
Average rainfall in September
Stelvio, Italy
- Average rainfall in September: 45mm
The wettest month (with the highest rainfall) is August (67mm).
The driest month (with the least rainfall) is January (20mm).
Average rainfall days in September
Stelvio, Italy
- Average rainfall days in September: 10.4 days
The month with the highest number of rainy days is July (14.6 days).
The month with the least rainy days is November (4 days).
Average snowfall in September
Stelvio, Italy
- Average snowfall in September: 172mm
The month with the highest snowfall is November (479mm).
The month with the least snowfall is July (16mm).
Average snowfall days in September
Stelvio, Italy
- Average snowfall days in September: 5.7 days
The month with the highest number of snowfall days is April (15.3 days).
The month with the least snowfall days is July (1.4 days).
Average daylight in September /
Average sunshine in September
Stelvio, 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 36min).
- Average sunshine in September: 8h and 5min
The month with the most sunshine is July (Average sunshine: 10h and 36min).
The month with the least sunshine is November (Average sunshine: 4h and 30min).
Average sunshine days in September
Stelvio, Italy
- Average sunshine days in September: 15 days
The month with the most sunshine days is January (17.3 days).
The month with the least sunshine days is June (12.3 days).
Average UV index in September
Stelvio, Italy
- Average UV index in September: 3
The months with the highest UV index are June, July, August and September (UV index 3).
The months with the lowest UV index are January, February, April and November (UV index 1).
Average cloud cover in September
Stelvio, Italy
- Average cloud cover in September: 46
The month with the most cloud cover is May (Cloud cover 56).
The month with the least cloud cover is July (Cloud cover 41).
Average visibility in September
Stelvio, Italy
- Average visibility in September: 7km
The months with the highest visibility are June, July and December (8km).
The months with the lowest visibility are March, April, May and November (6km).
