September weather forecastOpi, Italy
September
Weather in September
September, the first month of the autumn in Opi, is still a warm month, with an average temperature varying between 23.1°C (73.6°F) and 12.1°C (53.8°F).Temperature
In the transition to September, Opi observes a drop in the average high-temperature, moving from a warm 28.8°C (83.8°F) in August to a still moderately hot 23.1°C (73.6°F). Opi records an average nighttime low of 12.1°C (53.8°F) in September.Humidity
In September, the average relative humidity in Opi is 72%.Rainfall
In Opi, during September, the rain falls for 13.8 days and regularly aggregates up to 42mm (1.65") of precipitation. Throughout the year, there are 186.2 rainfall days, and 769mm (30.28") of precipitation is accumulated.Snowfall
In Opi, snow does not fall in May through October.Daylight
In September, the average length of the day in Opi, Italy, is 12h and 29min.On the first day of September, sunrise is at 06:31 and sunset at 19:38. On the last day of the month, sunrise is at 07:01 and sunset at 18:48 CEST.
Sunshine
In Opi, the average sunshine in September is 10.6h.UV index
In September, the average daily maximum UV index is 5. A UV Index reading of 3 to 5 represents a medium vulnerability from exposure to the Sun's UV radiation for the ordinary person.Note: In September, the UV index of 5 transforms into the following advice:
Stay alert. Light-skinned people could suffer burns in less than 30 minutes. Avoiding the Sun during its peak radiation time around midday is a healthy practice. On days when the sun blazes, arm yourself with sunglasses that block UVA and UVB radiation.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Opi, Italy
- Average high temperature in September: 23.1°C
The warmest month (with the highest average high temperature) is August (28.8°C).
The month with the lowest average high temperature is January (7.4°C).
- Average low temperature in September: 12.1°C
The month with the highest average low temperature is August (15.2°C).
The coldest month (with the lowest average low temperature) is January (0.3°C).
Average pressure in September
Opi, Italy
- Average pressure in September: 1015.5mbar
The month with the highest atmospheric pressure is December (1018.4mbar).
The month with the lowest atmospheric pressure is July (1013.8mbar).
Average wind speed in September
Opi, Italy
- Average wind speed in September: 7.3km/h
The windiest month (with the highest average wind speed) is February (10.2km/h).
The calmest month (with the lowest average wind speed) is August (6.2km/h).
Average humidity in September
Opi, Italy
- Average humidity in September: 72%
The month with the highest relative humidity is January (85%).
The month with the lowest relative humidity is August (62%).
Average rainfall in September
Opi, Italy
- Average rainfall in September: 42mm
The wettest month (with the highest rainfall) is November (103mm).
The driest month (with the least rainfall) is August (33mm).
Average rainfall days in September
Opi, Italy
- Average rainfall days in September: 13.8 days
The month with the highest number of rainy days is May (19.7 days).
The month with the least rainy days is August (11.5 days).
Average snowfall in September
Opi, Italy
- Average snowfall in September: 0mm
The month with the highest snowfall is February (68mm).
The months with the least snowfall are May, June, July, August, September and October (0mm).
Average snowfall days in September
Opi, Italy
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (3.2 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
Opi, Italy
- Average daylight in September: 12h and 30min
The month with the longest days is June (Average daylight: 15h and 12min).
The month with the shortest days is December (Average daylight: 9h and 12min).
- Average sunshine in September: 10h and 36min
The months with the most sunshine are July and August (Average sunshine: 11h and 48min).
The month with the least sunshine is January (Average sunshine: 5h and 18min).
Average sunshine days in September
Opi, Italy
- Average sunshine days in September: 13.9 days
The month with the most sunshine days is August (16.8 days).
The month with the least sunshine days is February (8.3 days).
Average UV index in September
Opi, Italy
- Average UV index in September: 5
The months with the highest UV index are June, July and August (UV index 6).
The months with the lowest UV index are January, February and December (UV index 2).
Average cloud cover in September
Opi, Italy
- Average cloud cover in September: 26
The month with the most cloud cover is January (Cloud cover 46).
The month with the least cloud cover is August (Cloud cover 14).
Average visibility in September
Opi, Italy
- Average visibility in September: 9km
The months with the highest visibility are July and August (10km).
The months with the lowest visibility are January, February and November (8km).
