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 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 arrival of September corresponds with a light shift in temperature, down from a warm 27.3°C (81.1°F) in August to a still moderately hot 24.2°C (75.6°F). September nights reveal a minor deviation from daytime highs, with a mean low-temperature of 20.9°C (69.6°F).Humidity
The months with the lowest humidity are August and September, with an average relative humidity of 67%.Rainfall
In Stio, during September, the rain falls for 10.7 days and regularly aggregates up to 35mm (1.38") of precipitation. In Stio, during the entire year, the rain falls for 123.6 days and collects up to 446mm (17.56") of precipitation.Daylight
In September, the average length of the day in Stio is 12h and 28min.On the first day of the month, sunrise is at 06:26 and sunset at 19:30. On the last day of September, sunrise is at 06:54 and sunset at 18:42 CEST.
Sunshine
The average sunshine in September in Stio is 10.8h.UV index
In Stio, the average daily maximum UV index in September is 6. A UV Index reading of 6 to 7 represents a high health vulnerability from unprotected exposure to Sun's UV rays for the ordinary person.Note: The maximum UV index of 6 during September leads to these instructions:
Persist with safeguards and heed sun safety doctrines. Keeping sunburn at bay is of prime importance. The time between 10 a.m. and 4 p.m. is when UV radiation is at its peak. Limit exposure to direct sunlight during these hours. Loose clothes with a tight weave are optimal for safeguarding yourself against the Sun's rays.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the usual temperature for Stio in September?
What are the least humid months in Stio?
What is the average humidity in September?
How many days does it rain in September?
What is the average length of the day in September?
What time are sunrise and sunset in September?
How many hours of sunshine does Stio have in September?
What is the UV index intensity in September?
Average temperature in September
Stio, Italy
- Average high temperature in September: 24.2°C
The warmest month (with the highest average high temperature) is August (27.3°C).
The month with the lowest average high temperature is January (11.9°C).
- Average low temperature in September: 20.9°C
The month with the highest average low temperature is August (23.8°C).
The coldest month (with the lowest average low temperature) is February (9.4°C).
Average pressure in September
Stio, Italy
- Average pressure in September: 1015.5mbar
The month with the highest atmospheric pressure is December (1018.4mbar).
The month with the lowest atmospheric pressure is July (1013.8mbar).
Average wind speed in September
Stio, Italy
- Average wind speed in September: 10.2km/h
The windiest month (with the highest average wind speed) is January (15.1km/h).
The calmest month (with the lowest average wind speed) is August (9km/h).
Average humidity in September
Stio, Italy
- Average humidity in September: 67%
The month with the highest relative humidity is April (73%).
The months with the lowest relative humidity are August and September (67%).
Average rainfall in September
Stio, Italy
- Average rainfall in September: 35mm
The wettest month (with the highest rainfall) is November (90mm).
The driest month (with the least rainfall) is August (8mm).
Average rainfall days in September
Stio, Italy
- Average rainfall days in September: 10.7 days
The month with the highest number of rainy days is March (14 days).
The month with the least rainy days is August (4.3 days).
Average daylight in September /
Average sunshine in September
Stio, Italy
- Average daylight in September: 12h and 3min
The month with the longest days is June (Average daylight: 15h and 0min).
The month with the shortest days is December (Average daylight: 9h and 24min).
- Average sunshine in September: 10h and 5min
The months with the most sunshine are June and August (Average sunshine: 12h and 0min).
The month with the least sunshine is January (Average sunshine: 6h and 6min).
Average sunshine days in September
Stio, Italy
- Average sunshine days in September: 15.1 days
The month with the most sunshine days is August (22 days).
The month with the least sunshine days is February (13.5 days).
Average UV index in September
Stio, Italy
- Average UV index in September: 6
The month with the highest UV index is July (UV index 7).
The month with the lowest UV index is January (UV index 3).
Average cloud cover in September
Stio, Italy
- Average cloud cover in September: 18
The month with the most cloud cover is January (Cloud cover 36).
The month with the least cloud cover is August (Cloud cover 8).
Average visibility in September
Stio, Italy
- Average visibility in September: 10km
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (10km).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (10km).
Stio, Italy
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