September weather forecastGrassano, Italy
September
Weather in September
The first month of the autumn, September, is still a warm month in Grassano, Italy, with an average temperature ranging between min 17.5°C (63.5°F) and max 26.3°C (79.3°F).Temperature
September's onset brings a slight change in high-temperatures, falling from a hot 31.7°C (89.1°F) in August to a moderately hot 26.3°C (79.3°F). Grassano's nighttime temperature in September falls to an average of 17.5°C (63.5°F).Humidity
The average relative humidity in September is 60%.Rainfall
In September, the rain falls for 12.4 days. Throughout September, 40mm (1.57") of precipitation is accumulated. In Grassano, during the entire year, the rain falls for 155.5 days and collects up to 529mm (20.83") of precipitation.Snowfall
In Grassano, snow does not fall in May through October.Daylight
In September, the average length of the day in Grassano is 12h and 28min.On the first day of the month, sunrise is at 06:22 and sunset at 19:26. On the last day of September, in Grassano, sunrise is at 06:50 and sunset at 18:38 CEST.
Sunshine
In Grassano, the average sunshine in September is 10.6h.UV index
In Grassano, the average daily maximum UV index in September is 6. A UV Index value of 6 to 7 symbolizes a high threat to health from exposure to the Sun's UV radiation for the ordinary person.Note: In September, the UV index of 6 transforms into the following advice:
Stick with precautions and abide by sun safety procedures. Evading sunburn is essential. The Sun's UV radiation is most intense from 10 a.m. to 4 p.m. Try to avoid direct sun exposure during these hours. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Grassano, Italy
- Average high temperature in September: 26.3°C
The warmest month (with the highest average high temperature) is August (31.7°C).
The month with the lowest average high temperature is January (10.7°C).
- Average low temperature in September: 17.5°C
The month with the highest average low temperature is August (21.2°C).
The coldest month (with the lowest average low temperature) is January (4°C).
Average pressure in September
Grassano, Italy
- Average pressure in September: 1014.9mbar
The month with the highest atmospheric pressure is December (1017.8mbar).
The month with the lowest atmospheric pressure is July (1012.9mbar).
Average wind speed in September
Grassano, Italy
- Average wind speed in September: 9.9km/h
The windiest month (with the highest average wind speed) is February (14.7km/h).
The calmest months (with the lowest average wind speed) are August and September (9.9km/h).
Average humidity in September
Grassano, Italy
- Average humidity in September: 60%
The month with the highest relative humidity is January (80%).
The months with the lowest relative humidity are July and August (49%).
Average rainfall in September
Grassano, Italy
- Average rainfall in September: 40mm
The wettest month (with the highest rainfall) is April (63mm).
The driest month (with the least rainfall) is August (19mm).
Average rainfall days in September
Grassano, Italy
- Average rainfall days in September: 12.4 days
The months with the highest number of rainy days are April and May (17.3 days).
The month with the least rainy days is August (7.3 days).
Average snowfall in September
Grassano, Italy
- Average snowfall in September: 0mm
The month with the highest snowfall is February (30mm).
The months with the least snowfall are May, June, July, August, September and October (0mm).
Average snowfall days in September
Grassano, Italy
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (2.8 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
Grassano, Italy
- Average daylight in September: 12h and 30min
The month with the longest days is June (Average daylight: 15h and 0min).
The month with the shortest days is December (Average daylight: 9h and 18min).
- Average sunshine in September: 10h and 36min
The months with the most sunshine are July and August (Average sunshine: 12h and 6min).
The month with the least sunshine is January (Average sunshine: 5h and 36min).
Average sunshine days in September
Grassano, Italy
- Average sunshine days in September: 14.6 days
The month with the most sunshine days is August (21.6 days).
The month with the least sunshine days is February (10.3 days).
Average UV index in September
Grassano, 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 December (UV index 2).
Average cloud cover in September
Grassano, Italy
- Average cloud cover in September: 19
The month with the most cloud cover is January (Cloud cover 40).
The month with the least cloud cover is August (Cloud cover 10).
Average visibility in September
Grassano, Italy
- Average visibility in September: 10km
The months with the highest visibility are May, June, July, August, September, October and December (10km).
The months with the lowest visibility are January, February, March, April and November (9km).
