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 minor decrease in the average high-temperature is observed during September, shifting from a moderately hot 26.4°C (79.5°F) in August to an agreeable 21.9°C (71.4°F). During September, an average low-temperature of 13.8°C (56.8°F) is observed in Costermano.Humidity
The average relative humidity in September is 74%.Rainfall
In September, the rain falls for 14.3 days. Throughout September, 63mm (2.48") of precipitation is accumulated. In Costermano, during the entire year, the rain falls for 178.5 days and collects up to 861mm (33.9") of precipitation.Snowfall
April through November are months without snowfall.Daylight
In September, the average length of the day in Costermano is 12h and 32min.On the first day of the month, sunrise is at 06:38 and sunset at 19:54. On the last day of September, sunrise is at 07:14 and sunset at 18:59 CEST.
Sunshine
The average sunshine in September is 10.1h.UV index
In September, the average daily maximum UV index in Costermano, Italy, is 5. A UV Index estimate of 3 to 5 represents a medium health hazard from unprotected exposure to Sun's UV rays for ordinary individuals.Note: A maximum high daily UV index of 5 during September translates into the following directions:
Undertake protective steps - Obligation to safeguard skin and eyes from harm is in place. Sun exposure should be minimized, especially during midday, to avoid harmful UV radiation. Your best bet for sun defense on the face, eyes, and neck is a hat with a wide brim.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the temperature in September in Costermano?
What is the average humidity in September in Costermano?
How many days does it rain in September in Costermano?
When it does not snow in Costermano?
What is the average length of the day in September in Costermano?
What time are sunrise and sunset in September in Costermano?
How many hours of sunshine does Costermano have in September?
How high is the UV index in September in Costermano?
Average temperature in September
Costermano, Italy
- Average high temperature in September: 21.9°C
The warmest month (with the highest average high temperature) is August (26.4°C).
The month with the lowest average high temperature is January (5.8°C).
- Average low temperature in September: 13.8°C
The month with the highest average low temperature is August (17.8°C).
The coldest month (with the lowest average low temperature) is January (0.7°C).
Average pressure in September
Costermano, Italy
- Average pressure in September: 1016.9mbar
The month with the highest atmospheric pressure is December (1019.8mbar).
The month with the lowest atmospheric pressure is May (1014.6mbar).
Average wind speed in September
Costermano, Italy
- Average wind speed in September: 6.6km/h
The windiest month (with the highest average wind speed) is April (7.8km/h).
The calmest month (with the lowest average wind speed) is October (6.3km/h).
Average humidity in September
Costermano, Italy
- Average humidity in September: 74%
The month with the highest relative humidity is November (79%).
The month with the lowest relative humidity is August (71%).
Average rainfall in September
Costermano, Italy
- Average rainfall in September: 63mm
The wettest month (with the highest rainfall) is June (115mm).
The driest month (with the least rainfall) is January (29mm).
Average rainfall days in September
Costermano, Italy
- Average rainfall days in September: 14.3 days
The month with the highest number of rainy days is May (21.3 days).
The month with the least rainy days is December (8.2 days).
Average snowfall in September
Costermano, Italy
- Average snowfall in September: 0mm
The month with the highest snowfall is February (15mm).
The months with the least snowfall are April, May, June, July, August, September, October and November (0mm).
Average snowfall days in September
Costermano, Italy
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (1.3 days).
The months with the least snowfall days are April, May, June, July, August, September, October and November (0 days).
Average daylight in September /
Average sunshine in September
Costermano, Italy
- Average daylight in September: 12h and 3min
The month with the longest days is June (Average daylight: 15h and 36min).
The month with the shortest days is December (Average daylight: 8h and 48min).
- Average sunshine in September: 10h and 1min
The months with the most sunshine are June and July (Average sunshine: 11h and 12min).
The months with the least sunshine are February and November (Average sunshine: 5h and 48min).
Average sunshine days in September
Costermano, Italy
- Average sunshine days in September: 12.3 days
The month with the most sunshine days is December (21.5 days).
The month with the least sunshine days is July (3.2 days).
Average UV index in September
Costermano, 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, November and December (UV index 2).
Average cloud cover in September
Costermano, Italy
- Average cloud cover in September: 28
The month with the most cloud cover is February (Cloud cover 41).
The month with the least cloud cover is August (Cloud cover 22).
Average visibility in September
Costermano, Italy
- Average visibility in September: 9km
The month with the highest visibility is June (10km).
The months with the lowest visibility are January, February, March, April, May, July, August, September, October, November and December (9km).
