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
Weather in September
Temperature
The average high-temperature slightly decreases in September, shifting from a warm 24.9°C (76.8°F) in August to a pleasant 20.6°C (69.1°F). During September, the temperature in Serravalle Sesia is averaged to a low of 11.1°C (52°F) at night.Humidity
In September, the average relative humidity is 73%.Rainfall
In Serravalle Sesia, during September, the rain falls for 14.7 days and regularly aggregates up to 49mm (1.93") of precipitation. In Serravalle Sesia, during the entire year, the rain falls for 188.8 days and collects up to 1018mm (40.08") of precipitation.Snowfall
In Serravalle Sesia, snow does not fall in April through October.Daylight
In Serravalle Sesia, 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 is 9.5h.UV index
In September, the average daily maximum UV index is 4. A UV Index of 3 to 5 symbolizes a moderate health risk from unsafe exposure to UV radiation for ordinary individuals.Note: The maximum UV index, 4 during September, leads to the following recommendations:
Guard yourself - Precautionary measures against sun damage are advocated. Considering the harmful UV rays from the Sun during midday, it's essential to reduce exposure. Using UVA and UVB-protective sunglasses and sun-protective clothing is effective against UV radiation.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the temperature in September in Serravalle Sesia?
What is the average humidity in September in Serravalle Sesia?
How much does it rain in Serravalle Sesia in September?
When it does not snow in Serravalle Sesia?
What is the average length of the day in September in Serravalle Sesia?
When are sunrise and sunset in September in Serravalle Sesia?
How many hours of sunshine does Serravalle Sesia have in September?
How high is the UV index in September in Serravalle Sesia?
Average temperature in September
Serravalle Sesia, 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
Serravalle Sesia, 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
Serravalle Sesia, 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
Serravalle Sesia, 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
Serravalle Sesia, 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
Serravalle Sesia, 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
Serravalle Sesia, 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
Serravalle Sesia, 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
Serravalle Sesia, 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: 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
Serravalle Sesia, 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
Serravalle Sesia, 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
Serravalle Sesia, 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
Serravalle Sesia, 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).
Serravalle Sesia, Italy
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