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
A subtle decrease in the average high-temperature marks September, falling from August's 28.5°C (83.3°F) to a still moderately hot 23.5°C (74.3°F). Tortona's nights in September cool down to an average low-temperature of 13.5°C (56.3°F).Humidity
In Tortona, the average relative humidity in September is 76%.Rainfall
The month with the least rainfall in Tortona is September, when the rain falls for 11.7 days and typically collects 35mm (1.38") of precipitation.Snowfall
April through October are months without snowfall in Tortona, Italy.Daylight
In Tortona, the average length of the day in September is 12h and 31min.On the first day of the month, sunrise is at 06:47 and sunset at 20:01. On the last day of September, in Tortona, Italy, sunrise is at 07:21 and sunset at 19:06 CEST.
Sunshine
In Tortona, the average sunshine in September is 9.8h.UV index
The average daily maximum UV index in September in Tortona is 5. A UV Index estimate of 3 to 5 represents a moderate health risk from unsafe exposure to UV radiation for average individuals.Note: In September, an average UV index of 5 transforms into the following instructions:
Prioritize safety - Suggestions to prevent sun damage are offered. Solar radiation peaks around mid-day, so it's wise to limit exposure to the Sun at this time. Sun-related eye harm can be minimized with proper sunglasses offering UVA and UVB coverage.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the average September temperature in Tortona?
What is the average humidity in September in Tortona?
What is the driest month in Tortona?
How much does it rain in Tortona in September?
When it does not snow in Tortona?
How many hours of daylight does Tortona have in September?
What time are sunrise and sunset in September in Tortona?
How many hours of sunshine does Tortona have in September?
How high is the UV index in September in Tortona?
Average temperature in September
Tortona, Italy
- Average high temperature in September: 23.5°C
The warmest month (with the highest average high temperature) is August (28.5°C).
The month with the lowest average high temperature is January (6°C).
- Average low temperature in September: 13.5°C
The month with the highest average low temperature is August (16.8°C).
The coldest month (with the lowest average low temperature) is January (0.8°C).
Average pressure in September
Tortona, Italy
- Average pressure in September: 1016.3mbar
The month with the highest atmospheric pressure is December (1019.2mbar).
The month with the lowest atmospheric pressure is April (1014.1mbar).
Average wind speed in September
Tortona, Italy
- Average wind speed in September: 5.5km/h
The windiest month (with the highest average wind speed) is March (7.2km/h).
The calmest month (with the lowest average wind speed) is December (4.9km/h).
Average humidity in September
Tortona, Italy
- Average humidity in September: 76%
The month with the highest relative humidity is November (86%).
The month with the lowest relative humidity is August (71%).
Average rainfall in September
Tortona, Italy
- Average rainfall in September: 35mm
The wettest month (with the highest rainfall) is November (109mm).
The driest month (with the least rainfall) is September (35mm).
Average rainfall days in September
Tortona, Italy
- Average rainfall days in September: 11.7 days
The month with the highest number of rainy days is May (17.3 days).
The month with the least rainy days is December (9.3 days).
Average snowfall in September
Tortona, Italy
- Average snowfall in September: 0mm
The month with the highest snowfall is January (75mm).
The months with the least snowfall are April, May, June, July, August, September and October (0mm).
Average snowfall days in September
Tortona, Italy
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (3.5 days).
The months with the least snowfall days are April, May, June, July, August, September and October (0 days).
Average daylight in September /
Average sunshine in September
Tortona, Italy
- Average daylight in September: 12h and 3min
The month with the longest days is June (Average daylight: 15h and 30min).
The month with the shortest days is December (Average daylight: 8h and 54min).
- Average sunshine in September: 9h and 5min
The month with the most sunshine is July (Average sunshine: 11h and 36min).
The month with the least sunshine is November (Average sunshine: 4h and 54min).
Average sunshine days in September
Tortona, Italy
- Average sunshine days in September: 15.1 days
The month with the most sunshine days is December (18.9 days).
The month with the least sunshine days is July (9.5 days).
Average UV index in September
Tortona, Italy
- Average UV index in September: 5
The months with the highest UV index are June and 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
Tortona, Italy
- Average cloud cover in September: 25
The month with the most cloud cover is November (Cloud cover 51).
The months with the least cloud cover are July and August (Cloud cover 20).
Average visibility in September
Tortona, Italy
- Average visibility in September: 9km
The months with the highest visibility are April, May, June, July, August and September (9km).
The month with the lowest visibility is November (7km).
