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
Petrella Liri experiences a temperature shift at the start of September, with average high-temperatures adjusting from a warm 27°C (80.6°F) in August to an agreeable 21.5°C (70.7°F). Petrella Liri records an average nighttime low of 10.1°C (50.2°F) in September.Humidity
In Petrella Liri, Italy, the average relative humidity in September is 73%.Rainfall
In Petrella Liri, in September, it is raining for 12.8 days, with typically 44mm (1.73") of accumulated precipitation. Throughout the year, in Petrella Liri, there are 178.9 rainfall days, and 718mm (28.27") of precipitation is accumulated.Snowfall
In Petrella Liri, Italy, snow does not fall in May through October.Daylight
In September, the average length of the day in Petrella Liri is 12h and 29min.On the first day of September, sunrise is at 06:32 and sunset at 19:40. On the last day of the month, sunrise is at 07:03 and sunset at 18:50 CEST.
Sunshine
In September, the average sunshine in Petrella Liri is 10.2h.UV index
In September, the average daily maximum UV index is 4. A UV Index reading of 3 to 5 represents a moderate threat to health from exposure to the Sun's UV radiation for average individuals.Note: During September, 4 as the daily maximum UV index converts into the following advice:
Adopt protective measures - Suggestions to resist sunburn are offered. Avoiding direct sun during mid-day hours can prevent harmful UV radiation exposure. Boost your sun resistance with garments that are densely woven yet spacious.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the average September temperature in Petrella Liri?
What is the average humidity in September in Petrella Liri?
How much does it rain in Petrella Liri in September?
When it does not snow in Petrella Liri?
How many hours of daylight does Petrella Liri have in September?
What time are sunrise and sunset in September in Petrella Liri?
How many hours of sunshine does Petrella Liri have in September?
What is the UV index intensity in September in Petrella Liri?
Average temperature in September
Petrella Liri, Italy
- Average high temperature in September: 21.5°C
The warmest month (with the highest average high temperature) is August (27°C).
The month with the lowest average high temperature is January (5.9°C).
- Average low temperature in September: 10.1°C
The month with the highest average low temperature is August (13.4°C).
The coldest month (with the lowest average low temperature) is February (-0.9°C).
Average pressure in September
Petrella Liri, Italy
- Average pressure in September: 1015.6mbar
The month with the highest atmospheric pressure is December (1018.5mbar).
The months with the lowest atmospheric pressure are April and July (1014mbar).
Average wind speed in September
Petrella Liri, Italy
- Average wind speed in September: 6.3km/h
The windiest month (with the highest average wind speed) is February (8.8km/h).
The calmest month (with the lowest average wind speed) is August (5.6km/h).
Average humidity in September
Petrella Liri, Italy
- Average humidity in September: 73%
The month with the highest relative humidity is November (84%).
The month with the lowest relative humidity is August (64%).
Average rainfall in September
Petrella Liri, Italy
- Average rainfall in September: 44mm
The wettest month (with the highest rainfall) is November (91mm).
The driest month (with the least rainfall) is October (33mm).
Average rainfall days in September
Petrella Liri, Italy
- Average rainfall days in September: 12.8 days
The month with the highest number of rainy days is May (19.9 days).
The month with the least rainy days is August (10.4 days).
Average snowfall in September
Petrella Liri, Italy
- Average snowfall in September: 0mm
The month with the highest snowfall is February (106mm).
The months with the least snowfall are May, June, July, August, September and October (0mm).
Average snowfall days in September
Petrella Liri, Italy
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (6.1 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
Petrella Liri, Italy
- Average daylight in September: 12h and 3min
The month with the longest days is June (Average daylight: 15h and 12min).
The month with the shortest days is December (Average daylight: 9h and 12min).
- Average sunshine in September: 10h and 1min
The month with the most sunshine is August (Average sunshine: 11h and 36min).
The month with the least sunshine is January (Average sunshine: 5h and 12min).
Average sunshine days in September
Petrella Liri, Italy
- Average sunshine days in September: 15.7 days
The months with the most sunshine days are August and October (16.9 days).
The month with the least sunshine days is April (8.7 days).
Average UV index in September
Petrella Liri, Italy
- Average UV index in September: 4
The month with the highest UV index is July (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in September
Petrella Liri, Italy
- Average cloud cover in September: 30
The month with the most cloud cover is January (Cloud cover 49).
The month with the least cloud cover is August (Cloud cover 17).
Average visibility in September
Petrella Liri, Italy
- Average visibility in September: 9km
The month with the highest visibility is August (10km).
The months with the lowest visibility are January, February, October, November and December (8km).
