September weather forecastVallelonga, Italy
September
Weather in September
The first month of the autumn, September, is still a warm month in Vallelonga, Italy, with an average temperature fluctuating between 18.2°C (64.8°F) and 25.1°C (77.2°F).Temperature
September heralds a minor drop in average high-temperature, sliding from August's moderately hot 28.8°C (83.8°F) to a still warm 25.1°C (77.2°F). Vallelonga throughout September, experiences an average nighttime temperature of 18.2°C (64.8°F).Humidity
In Vallelonga, the average relative humidity in September is 71%.Rainfall
In September, in Vallelonga, the rain falls for 12 days. Throughout September, 38mm (1.5") of precipitation is accumulated. Throughout the year, there are 141.7 rainfall days, and 480mm (18.9") of precipitation is accumulated.Snowfall
February through December are months without snowfall.Daylight
In Vallelonga, the average length of the day in September is 12h and 26min.On the first day of September in Vallelonga, sunrise is at 06:24 and sunset at 19:24. On the last day of the month, sunrise is at 06:50 and sunset at 18:39 CEST.
Sunshine
In Vallelonga, the average sunshine in September is 10.7h.UV index
In September, the average daily maximum UV index is 5. A UV Index reading of 3 to 5 represents a medium health hazard from unsafe exposure to UV radiation for average individuals.Note: The daily high UV index of 5 in September translates into this advice:
Take necessary precautions - Protection from skin and eye injury is mandatory. To guard against the harmful effects of the Sun, minimize exposure during midday. Stay sun-safe with clothing that is both closely woven and worn loosely.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Vallelonga, Italy
- Average high temperature in September: 25.1°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 (12°C).
- Average low temperature in September: 18.2°C
The month with the highest average low temperature is August (20.8°C).
The coldest months (with the lowest average low temperature) are January and February (7.3°C).
Average pressure in September
Vallelonga, Italy
- Average pressure in September: 1015.5mbar
The month with the highest atmospheric pressure is December (1018.7mbar).
The month with the lowest atmospheric pressure is July (1013.8mbar).
Average wind speed in September
Vallelonga, Italy
- Average wind speed in September: 8.2km/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 (7.1km/h).
Average humidity in September
Vallelonga, Italy
- Average humidity in September: 71%
The months with the highest relative humidity are January, February, November and December (77%).
The month with the lowest relative humidity is August (69%).
Average rainfall in September
Vallelonga, Italy
- Average rainfall in September: 38mm
The wettest month (with the highest rainfall) is November (65mm).
The driest month (with the least rainfall) is August (15mm).
Average rainfall days in September
Vallelonga, Italy
- Average rainfall days in September: 12 days
The months with the highest number of rainy days are January and March (14.9 days).
The month with the least rainy days is July (5.8 days).
Average snowfall days in September
Vallelonga, Italy
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (0.1 days).
The months with the least snowfall days are February, March, April, May, June, July, August, September, October, November and December (0 days).
Average daylight in September /
Average sunshine in September
Vallelonga, Italy
- Average daylight in September: 12h and 24min
The month with the longest days is June (Average daylight: 14h and 48min).
The month with the shortest days is December (Average daylight: 9h and 30min).
- Average sunshine in September: 10h and 42min
The month with the most sunshine is July (Average sunshine: 12h and 0min).
The months with the least sunshine are January and February (Average sunshine: 6h and 0min).
Average sunshine days in September
Vallelonga, Italy
- Average sunshine days in September: 13.6 days
The month with the most sunshine days is July (21.9 days).
The month with the least sunshine days is February (11.5 days).
Average UV index in September
Vallelonga, 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 3).
Average cloud cover in September
Vallelonga, Italy
- Average cloud cover in September: 19
The months with the most cloud cover are January and February (Cloud cover 36).
The month with the least cloud cover is August (Cloud cover 9).
Average visibility in September
Vallelonga, 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).
