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 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 start of September signals a gentle decrease in the average high-temperature, transitioning from a tropical 30.3°C (86.5°F) in August to a warm 25.5°C (77.9°F). An average temperature of 16.9°C (62.4°F) is recorded during the nights in September.Humidity
In September, the average relative humidity is 68%.Rainfall
In Segni, during September, the rain falls for 13.4 days and regularly aggregates up to 62mm (2.44") of precipitation. Throughout the year, there are 156.3 rainfall days, and 724mm (28.5") of precipitation is accumulated.Snowfall
In Segni, snow does not fall in January, March through December.Daylight
In Segni, the average length of the day in September is 12h and 29min.On the first day of September in Segni, sunrise is at 06:34 and sunset at 19:41. On the last day of the month, sunrise is at 07:04 and sunset at 18:51 CEST.
Sunshine
In Segni, Italy, the average sunshine in September is 10.7h.UV index
The average daily maximum UV index in September is 5. A UV Index of 3 to 5 symbolizes a moderate health risk from exposure to the Sun's UV rays for the ordinary person.Note: In September, a daily UV index of 5 turns into the following recommendations:
Undertake protective steps - Obligation to safeguard skin and eyes from harm is in place. Avoid the Sun's strongest UV rays by seeking shade and limiting exposure during midday. 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 are the temperatures in September?
What is the average humidity in September?
How much does it rain in September?
When it does not snow?
How many hours of daylight does Segni have in September?
When is the sunrise / sunset in September in Segni?
How long on average sun shines in September?
What is the UV index reading in September?
Average temperature in September
Segni, Italy
- Average high temperature in September: 25.5°C
The warmest month (with the highest average high temperature) is August (30.3°C).
The month with the lowest average high temperature is January (11.5°C).
- Average low temperature in September: 16.9°C
The month with the highest average low temperature is August (19.9°C).
The coldest month (with the lowest average low temperature) is January (5.5°C).
Average pressure in September
Segni, Italy
- Average pressure in September: 1015.7mbar
The month with the highest atmospheric pressure is December (1018.5mbar).
The month with the lowest atmospheric pressure is April (1014mbar).
Average wind speed in September
Segni, Italy
- Average wind speed in September: 8.6km/h
The windiest month (with the highest average wind speed) is February (11.8km/h).
The calmest month (with the lowest average wind speed) is August (8.4km/h).
Average humidity in September
Segni, Italy
- Average humidity in September: 68%
The month with the highest relative humidity is November (78%).
The month with the lowest relative humidity is August (61%).
Average rainfall in September
Segni, Italy
- Average rainfall in September: 62mm
The wettest month (with the highest rainfall) is November (135mm).
The driest month (with the least rainfall) is August (19mm).
Average rainfall days in September
Segni, Italy
- Average rainfall days in September: 13.4 days
The month with the highest number of rainy days is March (16.1 days).
The month with the least rainy days is August (6.5 days).
Average snowfall days in September
Segni, Italy
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (0.1 days).
The months with the least snowfall days are January, March, April, May, June, July, August, September, October, November and December (0 days).
Average daylight in September /
Average sunshine in September
Segni, 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 4min
The months with the most sunshine are July and August (Average sunshine: 11h and 48min).
The month with the least sunshine is January (Average sunshine: 5h and 36min).
Average sunshine days in September
Segni, Italy
- Average sunshine days in September: 13.5 days
The month with the most sunshine days is August (20.4 days).
The month with the least sunshine days is April (11.9 days).
Average UV index in September
Segni, Italy
- Average UV index in September: 5
The month with the highest UV index is July (UV index 7).
The months with the lowest UV index are January, February and December (UV index 3).
Average cloud cover in September
Segni, Italy
- Average cloud cover in September: 21
The month with the most cloud cover is January (Cloud cover 40).
The month with the least cloud cover is August (Cloud cover 10).
Average visibility in September
Segni, 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).
