September weather forecastSperlonga, Italy
September
Weather in September
September, the first month of the autumn in Sperlonga, is still a warm month, with an average temperature fluctuating between 18.8°C (65.8°F) and 24.9°C (76.8°F).Temperature
September's arrival comes with a mild decrease in the average high-temperature, moving subtly from 28.7°C (83.7°F) in August to a still warm 24.9°C (76.8°F). Sperlonga experiences an average temperature drop to an enjoyable 18.8°C (65.8°F) during September nights.Humidity
The average relative humidity in September in Sperlonga, Italy, is 67%.Rainfall
In Sperlonga, during September, the rain falls for 11.5 days and regularly aggregates up to 48mm (1.89") of precipitation. In Sperlonga, during the entire year, the rain falls for 135.6 days and collects up to 569mm (22.4") of precipitation.Snowfall
March through December are months without snowfall.Sea temperature
In September, the average sea temperature in Sperlonga is 24.4°C (75.9°F).Note: Depending on a person's sensitivity to cold, with regards to sunshine, wind, and air temperature, a quick swim in 24.4°C (75.9°F) water may be enjoyable. (FYI: The official water temperature required for the Olympic swimming competition is 25°C (77°F) to 28°C (82.4°F).)
Daylight
The average length of the day in September is 12h and 28min.On the first day of September, sunrise is at 06:33 and sunset at 19:39. On the last day of the month, sunrise is at 07:02 and sunset at 18:49 CEST.
Sunshine
In Sperlonga, the average sunshine in September is 10.9h.UV index
In Sperlonga, the average daily maximum UV index in September is 5. A UV Index estimate of 3 to 5 represents a medium health hazard from exposure to the Sun's UV rays for ordinary individuals.Note: In September, the maximum UV index of 5 suggests this advice:
Make use of precautions - It is urged to ward off sun damage. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. To cut down UV radiation exposure by about half, sport a wide-brim hat. Heads up! Sand and water reflection magnifies the UV exposure from the Sun.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Sperlonga, Italy
- Average high temperature in September: 24.9°C
The warmest month (with the highest average high temperature) is August (28.7°C).
The month with the lowest average high temperature is January (11.6°C).
- Average low temperature in September: 18.8°C
The month with the highest average low temperature is August (21.6°C).
The coldest month (with the lowest average low temperature) is February (7°C).
Average pressure in September
Sperlonga, Italy
- Average pressure in September: 1015.7mbar
The month with the highest atmospheric pressure is December (1018.5mbar).
The month with the lowest atmospheric pressure is April (1014.1mbar).
Average wind speed in September
Sperlonga, Italy
- Average wind speed in September: 9.9km/h
The windiest month (with the highest average wind speed) is February (13km/h).
The calmest month (with the lowest average wind speed) is August (9.4km/h).
Average humidity in September
Sperlonga, Italy
- Average humidity in September: 67%
The months with the highest relative humidity are January and November (75%).
The month with the lowest relative humidity is August (63%).
Average rainfall in September
Sperlonga, Italy
- Average rainfall in September: 48mm
The wettest month (with the highest rainfall) is November (120mm).
The driest month (with the least rainfall) is August (10mm).
Average rainfall days in September
Sperlonga, Italy
- Average rainfall days in September: 11.5 days
The months with the highest number of rainy days are January and November (15 days).
The month with the least rainy days is August (4.2 days).
Average snowfall days in September
Sperlonga, Italy
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (0.3 days).
The months with the least snowfall days are March, April, May, June, July, August, September, October, November and December (0 days).
Average sea temperature in September
Sperlonga, Italy
- Average sea temperature in September: 24.4°C
The best month for swimming (with the highest average sea temperature) is August (25.4°C).
The coldest month (with the lowest average sea temperature) is February (13.9°C).
Average daylight in September /
Average sunshine in September
Sperlonga, 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 0min).
The month with the least sunshine is January (Average sunshine: 5h and 48min).
Average sunshine days in September
Sperlonga, Italy
- Average sunshine days in September: 16.7 days
The month with the most sunshine days is August (24.2 days).
The month with the least sunshine days is February (12.3 days).
Average UV index in September
Sperlonga, 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
Sperlonga, Italy
- Average cloud cover in September: 19
The month with the most cloud cover is January (Cloud cover 38).
The month with the least cloud cover is August (Cloud cover 9).
Average visibility in September
Sperlonga, 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).
