September weather forecastGrotte, Italy
September
Weather in September
September, the first month of the autumn in Grotte, is still a warm month, with an average temperature ranging between min 20.7°C (69.3°F) and max 26.4°C (79.5°F).Temperature
In Grotte, entering September brings a subtle temperature decrement, reducing from August's tropical 30.5°C (86.9°F) to a warm 26.4°C (79.5°F). Grotte, in September, experiences an average temperature of 20.7°C (69.3°F) at night.Humidity
In September, the average relative humidity is 67%.Rainfall
In Grotte, in September, it is raining for 9.3 days, with typically 32mm (1.26") of accumulated precipitation. Throughout the year, there are 120.4 rainfall days, and 395mm (15.55") of precipitation is accumulated.Snowfall
January through November are months without snowfall in Grotte.Daylight
The average length of the day in September in Grotte is 12h and 25min.On the first day of September, sunrise is at 06:36 and sunset at 19:34. On the last day of the month, sunrise is at 07:00 and sunset at 18:49 CEST.
Sunshine
In Grotte, the average sunshine in September is 11.1h.UV index
In Grotte, the average daily maximum UV index in September is 6. A UV Index estimate of 6 to 7 represents a high health vulnerability from exposure to the Sun's UV radiation for ordinary individuals.Note: In September, a daily maximum UV index of 6 leads to the following instructions:
Take precautions and adopt sun safety practices. Protection against sunburn is obliged. Minimize exposure to direct sunlight and seek shade from 10 a.m. to 4 p.m., when UV radiation is most intense, but remember that shade structures may not offer complete protection. Experience reduced UV exposure by about half when donning a wide-brim hat.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Grotte, Italy
- Average high temperature in September: 26.4°C
The warmest month (with the highest average high temperature) is August (30.5°C).
The month with the lowest average high temperature is January (13.1°C).
- Average low temperature in September: 20.7°C
The month with the highest average low temperature is August (23.2°C).
The coldest month (with the lowest average low temperature) is February (7.3°C).
Average pressure in September
Grotte, Italy
- Average pressure in September: 1015.6mbar
The month with the highest atmospheric pressure is December (1019.2mbar).
The month with the lowest atmospheric pressure is July (1014.2mbar).
Average wind speed in September
Grotte, Italy
- Average wind speed in September: 11.3km/h
The windiest month (with the highest average wind speed) is February (16km/h).
The calmest month (with the lowest average wind speed) is August (10.3km/h).
Average humidity in September
Grotte, Italy
- Average humidity in September: 67%
The month with the highest relative humidity is January (78%).
The month with the lowest relative humidity is July (56%).
Average rainfall in September
Grotte, Italy
- Average rainfall in September: 32mm
The wettest month (with the highest rainfall) is November (83mm).
The driest month (with the least rainfall) is July (2mm).
Average rainfall days in September
Grotte, Italy
- Average rainfall days in September: 9.3 days
The months with the highest number of rainy days are January and November (14.8 days).
The month with the least rainy days is July (1.9 days).
Average snowfall days in September
Grotte, Italy
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is December (0.2 days).
The months with the least snowfall days are January, February, March, April, May, June, July, August, September, October and November (0 days).
Average daylight in September /
Average sunshine in September
Grotte, Italy
- Average daylight in September: 12h and 24min
The month with the longest days is June (Average daylight: 14h and 42min).
The month with the shortest days is December (Average daylight: 9h and 36min).
- Average sunshine in September: 11h and 6min
The months with the most sunshine are June and July (Average sunshine: 12h and 6min).
The month with the least sunshine is January (Average sunshine: 6h and 12min).
Average sunshine days in September
Grotte, Italy
- Average sunshine days in September: 18.3 days
The month with the most sunshine days is July (28.2 days).
The month with the least sunshine days is February (11.3 days).
Average UV index in September
Grotte, Italy
- Average UV index in September: 6
The months with the highest UV index are July and August (UV index 7).
The month with the lowest UV index is February (UV index 3).
Average cloud cover in September
Grotte, Italy
- Average cloud cover in September: 15
The month with the most cloud cover is January (Cloud cover 34).
The month with the least cloud cover is July (Cloud cover 5).
Average visibility in September
Grotte, 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).
