September weather forecastPetriano, Italy
September
Weather in September
September, the first month of the autumn in Petriano, is still a warm month, with an average temperature varying between 23.4°C (74.1°F) and 18.9°C (66°F).Temperature
The onset of September results in a small decrease in the average high-temperature, moderately receding from a warm 27.7°C (81.9°F) in August to a still moderately hot 23.4°C (74.1°F). During the September nights, Petriano's temperature maintains an average close to the daytime highs, settling at a refreshing 18.9°C (66°F).Humidity
The average relative humidity in September is 68%.Rainfall
In Petriano, during September, the rain falls for 11.4 days and regularly aggregates up to 47mm (1.85") of precipitation. Throughout the year, in Petriano, Italy, there are 134.2 rainfall days, and 469mm (18.46") of precipitation is accumulated.Snowfall
In Petriano, snow does not fall in April through November.Daylight
In Petriano, the average length of the day in September is 12h and 31min.On the first day of September, sunrise is at 06:33 and sunset at 19:44. On the last day of the month, sunrise is at 07:06 and sunset at 18:51 CEST.
Sunshine
In September, the average sunshine is 10.5h.UV index
In September, the average daily maximum UV index is 5. A UV Index value of 3 to 5 symbolizes a moderate threat to health from exposure to the Sun's UV rays for ordinary individuals.Note: The daily maximum UV index of 5 in September interprets into the following advice:
Take necessary precautions - Protection from skin and eye injury is mandatory. The Sun's harshest UV rays are around midday; it's wise to seek shade and limit time outdoors. Tightly woven clothing, when worn loosely, shields effectively against the Sun.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Petriano, Italy
- Average high temperature in September: 23.4°C
The warmest month (with the highest average high temperature) is August (27.7°C).
The month with the lowest average high temperature is January (9.3°C).
- Average low temperature in September: 18.9°C
The month with the highest average low temperature is August (22.4°C).
The coldest month (with the lowest average low temperature) is January (6.3°C).
Average pressure in September
Petriano, Italy
- Average pressure in September: 1015.6mbar
The month with the highest atmospheric pressure is December (1018.8mbar).
The month with the lowest atmospheric pressure is July (1013.4mbar).
Average wind speed in September
Petriano, Italy
- Average wind speed in September: 12.6km/h
The windiest month (with the highest average wind speed) is February (15.8km/h).
The calmest month (with the lowest average wind speed) is June (11.2km/h).
Average humidity in September
Petriano, Italy
- Average humidity in September: 68%
The month with the highest relative humidity is November (76%).
The month with the lowest relative humidity is August (64%).
Average rainfall in September
Petriano, Italy
- Average rainfall in September: 47mm
The wettest month (with the highest rainfall) is May (65mm).
The driest month (with the least rainfall) is January (26mm).
Average rainfall days in September
Petriano, Italy
- Average rainfall days in September: 11.4 days
The month with the highest number of rainy days is May (13.9 days).
The month with the least rainy days is August (9.1 days).
Average snowfall in September
Petriano, Italy
- Average snowfall in September: 0mm
The month with the highest snowfall is February (9mm).
The months with the least snowfall are April, May, June, July, August, September, October and November (0mm).
Average snowfall days in September
Petriano, 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
Petriano, Italy
- Average daylight in September: 12h and 30min
The month with the longest days is June (Average daylight: 15h and 24min).
The month with the shortest days is December (Average daylight: 9h and 0min).
- Average sunshine in September: 10h and 30min
The month with the most sunshine is July (Average sunshine: 11h and 48min).
The month with the least sunshine is January (Average sunshine: 5h and 18min).
Average sunshine days in September
Petriano, Italy
- Average sunshine days in September: 16.5 days
The month with the most sunshine days is August (19.5 days).
The month with the least sunshine days is May (13.6 days).
Average UV index in September
Petriano, Italy
- Average UV index in September: 5
The month with the highest UV index is July (UV index 7).
The month with the lowest UV index is January (UV index 2).
Average cloud cover in September
Petriano, Italy
- Average cloud cover in September: 21
The month with the most cloud cover is January (Cloud cover 46).
The month with the least cloud cover is August (Cloud cover 12).
Average visibility in September
Petriano, 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).
