September weather forecastErcolano, Italy
September
Weather in September
September, the first month of the autumn in Ercolano, is still a warm month, with an average temperature fluctuating between 19.5°C (67.1°F) and 25.8°C (78.4°F).Temperature
The shift from August to September includes a minor decrease in the average high-temperature, lightly dropping from a hot 30°C (86°F) to a warm 25.8°C (78.4°F). During September nights, Ercolano records an average temperature of 19.5°C (67.1°F).Humidity
The average relative humidity in September is 64%.Rainfall
In September, the rain falls for 11.5 days. Throughout September, 45mm (1.77") of precipitation is accumulated. Throughout the year, in Ercolano, there are 139.4 rainfall days, and 569mm (22.4") of precipitation is accumulated.Snowfall
March through December are months without snowfall.Daylight
In September, the average length of the day is 12h and 28min.On the first day of September, sunrise is at 06:30 and sunset at 19:34. On the last day of the month, sunrise is at 06:58 and sunset at 18:46 CEST.
Sunshine
In Ercolano, the average sunshine in September is 10.9h.UV index
In September, the average daily maximum UV index in Ercolano is 5. A UV Index reading of 3 to 5 represents a medium vulnerability from exposure to the Sun's UV radiation for the average person.Note: In September, the UV index of 5 transforms into the following advice:
Guard yourself - An obligation to protect skin and eyes from harm exists. Midday Sun has the strongest UV rays, making it crucial to limit exposure and find shade. A wide-brimmed hat is a shield, deflecting up to 50% of harmful UV radiation from eyes.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Ercolano, Italy
- Average high temperature in September: 25.8°C
The warmest month (with the highest average high temperature) is August (30°C).
The month with the lowest average high temperature is January (12.3°C).
- Average low temperature in September: 19.5°C
The month with the highest average low temperature is August (22.7°C).
The coldest months (with the lowest average low temperature) are January and February (7.8°C).
Average pressure in September
Ercolano, Italy
- Average pressure in September: 1015.6mbar
The month with the highest atmospheric pressure is December (1018.4mbar).
The month with the lowest atmospheric pressure is April (1014mbar).
Average wind speed in September
Ercolano, Italy
- Average wind speed in September: 10.1km/h
The windiest month (with the highest average wind speed) is February (13.9km/h).
The calmest month (with the lowest average wind speed) is August (8.7km/h).
Average humidity in September
Ercolano, Italy
- Average humidity in September: 64%
The months with the highest relative humidity are January and November (73%).
The month with the lowest relative humidity is August (61%).
Average rainfall in September
Ercolano, Italy
- Average rainfall in September: 45mm
The wettest month (with the highest rainfall) is November (114mm).
The driest month (with the least rainfall) is August (8mm).
Average rainfall days in September
Ercolano, Italy
- Average rainfall days in September: 11.5 days
The month with the highest number of rainy days is January (15.4 days).
The months with the least rainy days are July and August (5.2 days).
Average snowfall in September
Ercolano, Italy
- Average snowfall in September: 0mm
The months with the highest snowfall are January and February (2mm).
The months with the least snowfall are March, April, May, June, July, August, September, October, November and December (0mm).
Average snowfall days in September
Ercolano, Italy
- Average snowfall days in September: 0 days
The months with the highest number of snowfall days are January and February (0.4 days).
The months with the least snowfall days are March, April, May, June, July, August, September, October, November and December (0 days).
Average daylight in September /
Average sunshine in September
Ercolano, Italy
- Average daylight in September: 12h and 30min
The month with the longest days is June (Average daylight: 15h and 6min).
The month with the shortest days is December (Average daylight: 9h and 18min).
- Average sunshine in September: 10h and 54min
The month with the most sunshine is July (Average sunshine: 12h and 6min).
The month with the least sunshine is January (Average sunshine: 5h and 36min).
Average sunshine days in September
Ercolano, Italy
- Average sunshine days in September: 15.6 days
The month with the most sunshine days is July (24 days).
The month with the least sunshine days is February (11.1 days).
Average UV index in September
Ercolano, Italy
- Average UV index in September: 5
The month with the highest UV index is July (UV index 7).
The months with the lowest UV index are January, February and December (UV index 3).
Average cloud cover in September
Ercolano, Italy
- Average cloud cover in September: 19
The month with the most cloud cover is January (Cloud cover 41).
The month with the least cloud cover is August (Cloud cover 9).
Average visibility in September
Ercolano, 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).
