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
In Colle Umberto, entering September brings a subtle temperature decrement, reducing from August's warm 26.8°C (80.2°F) to a pleasant 22°C (71.6°F). Colle Umberto experiences a mean low-temperature of 12.9°C (55.2°F) during September.Humidity
In September, the average relative humidity in Colle Umberto, Italy, is 74%.Rainfall
In September, the rain falls for 14.9 days. Throughout September, 69mm (2.72") of precipitation is accumulated. Throughout the year, there are 171.1 rainfall days, and 1042mm (41.02") of precipitation is accumulated.Snowfall
April through October are months without snowfall in Colle Umberto.Daylight
The average length of the day in September is 12h and 32min.On the first day of the month, sunrise is at 06:32 and sunset at 19:48. On the last day of September, in Colle Umberto, sunrise is at 07:08 and sunset at 18:52 CEST.
Sunshine
In September, the average sunshine is 10h.UV index
The average daily maximum UV index in September in Colle Umberto is 4. A UV Index estimate of 3 to 5 represents a medium vulnerability from unprotected exposure to Sun's UV rays for average individuals.Note: An average maximum UV index of 4 in September leads to these recommendations:
Heed the precautions - It is counselled to guard against solar damage. Avoid the Sun's strongest UV rays by seeking shade and limiting exposure during midday. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects.
Frequently asked questions
What is the average September temperature in Colle Umberto?
What is the average humidity in September in Colle Umberto?
How many days does it rain in September in Colle Umberto?
When it does not snow in Colle Umberto?
How many hours of daylight does Colle Umberto have in September?
What time are sunrise and sunset in September in Colle Umberto?
How many hours of sunshine does Colle Umberto have in September?
What is the UV index reading in September in Colle Umberto?
Average temperature in September
Colle Umberto, Italy
- Average high temperature in September: 22°C
The warmest month (with the highest average high temperature) is August (26.8°C).
The month with the lowest average high temperature is January (5.7°C).
- Average low temperature in September: 12.9°C
The month with the highest average low temperature is August (16.3°C).
The coldest month (with the lowest average low temperature) is January (0.2°C).
Average pressure in September
Colle Umberto, Italy
- Average pressure in September: 1017.4mbar
The month with the highest atmospheric pressure is December (1020mbar).
The month with the lowest atmospheric pressure is May (1014.9mbar).
Average wind speed in September
Colle Umberto, Italy
- Average wind speed in September: 7.4km/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 December (6km/h).
Average humidity in September
Colle Umberto, Italy
- Average humidity in September: 74%
The month with the highest relative humidity is November (80%).
The month with the lowest relative humidity is April (70%).
Average rainfall in September
Colle Umberto, Italy
- Average rainfall in September: 69mm
The wettest month (with the highest rainfall) is November (141mm).
The driest month (with the least rainfall) is January (43mm).
Average rainfall days in September
Colle Umberto, Italy
- Average rainfall days in September: 14.9 days
The months with the highest number of rainy days are June and July (20.3 days).
The month with the least rainy days is December (8 days).
Average snowfall in September
Colle Umberto, Italy
- Average snowfall in September: 0mm
The month with the highest snowfall is December (15mm).
The months with the least snowfall are April, May, June, July, August, September and October (0mm).
Average snowfall days in September
Colle Umberto, Italy
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (1.8 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
Colle Umberto, Italy
- Average daylight in September: 12h and 3min
The month with the longest days is June (Average daylight: 15h and 42min).
The month with the shortest days is December (Average daylight: 8h and 42min).
- Average sunshine in September: 10h and 0min
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 12min).
Average sunshine days in September
Colle Umberto, Italy
- Average sunshine days in September: 12.9 days
The month with the most sunshine days is December (21.7 days).
The month with the least sunshine days is July (5.3 days).
Average UV index in September
Colle Umberto, Italy
- Average UV index in September: 4
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
Colle Umberto, Italy
- Average cloud cover in September: 30
The month with the most cloud cover is November (Cloud cover 46).
The month with the least cloud cover is August (Cloud cover 24).
Average visibility in September
Colle Umberto, Italy
- Average visibility in September: 9km
The months with the highest visibility are June, July and August (10km).
The months with the lowest visibility are January, February, March, April, May, September, October, November and December (9km).
Colle Umberto, Italy
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