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
The arrival of September corresponds with a light shift in temperature, down from a moderately hot 24.9°C (76.8°F) in August to a pleasant 20.6°C (69.1°F). During the month of September, the temperature falls to an average of 11.1°C (52°F).Humidity
In September, the average relative humidity is 73%.Rainfall
In September, in Cellio, Italy, the rain falls for 14.7 days. Throughout September, 49mm (1.93") of precipitation is accumulated. Throughout the year, in Cellio, there are 188.8 rainfall days, and 1018mm (40.08") of precipitation is accumulated.Snowfall
In Cellio, snow does not fall in April through October.Daylight
In Cellio, the average length of the day in September is 12h and 32min.On the first day of the month, sunrise is at 06:48 and sunset at 20:04. On the last day of September, sunrise is at 07:24 and sunset at 19:08 CEST.
Sunshine
The average sunshine in September in Cellio is 9.5h.UV index
In September, the average daily maximum UV index is 4. A UV Index estimate of 3 to 5 represents a moderate threat to health from unprotected exposure to Sun's UV rays for the average person.Note: The daily high UV index of 4 during September translates into the following recommendations:
Be vigilant - Preventing sunburn is recommended. Avoiding direct sunlight during midday hours helps reduce the risk from intense UV radiation. Sun protection is enhanced with clothing that boasts a tight weave yet offers a loose fit.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are the temperatures in Cellio in September?
What is the average humidity in September in Cellio?
How much does it rain in Cellio in September?
When it does not snow in Cellio?
How many hours of daylight does Cellio have in September?
When is the sunrise / sunset in September in Cellio?
How long on average sun shines in September in Cellio?
What is the UV index reading in September in Cellio?
Average temperature in September
Cellio, Italy
- Average high temperature in September: 20.6°C
The warmest month (with the highest average high temperature) is August (24.9°C).
The month with the lowest average high temperature is January (4.6°C).
- Average low temperature in September: 11.1°C
The months with the highest average low temperature are July and August (14.3°C).
The coldest month (with the lowest average low temperature) is January (-1.6°C).
Average pressure in September
Cellio, Italy
- Average pressure in September: 1017.4mbar
The month with the highest atmospheric pressure is December (1020.3mbar).
The month with the lowest atmospheric pressure is April (1014.7mbar).
Average wind speed in September
Cellio, Italy
- Average wind speed in September: 6.2km/h
The windiest month (with the highest average wind speed) is May (6.8km/h).
The calmest month (with the lowest average wind speed) is November (5.2km/h).
Average humidity in September
Cellio, Italy
- Average humidity in September: 73%
The month with the highest relative humidity is November (77%).
The month with the lowest relative humidity is March (71%).
Average rainfall in September
Cellio, Italy
- Average rainfall in September: 49mm
The wettest month (with the highest rainfall) is November (164mm).
The driest month (with the least rainfall) is January (22mm).
Average rainfall days in September
Cellio, Italy
- Average rainfall days in September: 14.7 days
The month with the highest number of rainy days is July (23.3 days).
The month with the least rainy days is January (7.8 days).
Average snowfall in September
Cellio, Italy
- Average snowfall in September: 0mm
The month with the highest snowfall is February (47mm).
The months with the least snowfall are April, May, June, July, August, September and October (0mm).
Average snowfall days in September
Cellio, Italy
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (4.4 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).
Average daylight in September /
Average sunshine in September
Cellio, 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 12min).
The month with the least sunshine is November (Average sunshine: 5h and 48min).
Average sunshine days in September
Cellio, Italy
- Average sunshine days in September: 10.3 days
The month with the most sunshine days is January (19.1 days).
The month with the least sunshine days is July (4.1 days).
Average UV index in September
Cellio, Italy
- Average UV index in September: 4
The month with the highest UV index is June (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in September
Cellio, Italy
- Average cloud cover in September: 26
The month with the most cloud cover is November (Cloud cover 37).
The months with the least cloud cover are July and August (Cloud cover 25).
Average visibility in September
Cellio, 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).
