September weather forecastDesio, Italy

September

Weather in September

September, the first month of the autumn in Desio, is also a moderately hot month, with an average temperature varying between 14.3°C (57.7°F) and 23.3°C (73.9°F).

Temperature

September implies a soft temperature shift, with average high-temperatures reducing from August's 28.2°C (82.8°F) to a still moderately hot 23.3°C (73.9°F). During September, the nighttime temperature averages of 14.3°C (57.7°F).

Humidity

In Desio, the average relative humidity in September is 72%.

Rainfall

In Desio, during September, the rain falls for 14.6 days and regularly aggregates up to 81mm (3.19") of precipitation. Throughout the year, there are 162.3 rainfall days, and 972mm (38.27") of precipitation is accumulated.

Snowfall

April through October are months without snowfall.

Daylight

In September, the average length of the day is 12h and 32min.
On the first day of September in Desio, sunrise is at 06:45 and sunset at 20:00. On the last day of the month, sunrise is at 07:20 and sunset at 19:05 CEST.

Sunshine

In Desio, the average sunshine in September is 9.6h.

UV index

In September, the average daily maximum UV index is 5. A UV Index of 3 to 5 symbolizes a medium vulnerability from unprotected exposure to Sun's UV rays for the ordinary person.
Note: The maximum daily UV index, 5 in September, converts into the following recommendations:
Adopt protective measures - Requirement to safeguard skin and eyes from harm exists. The most potent solar radiation is around mid-day, so one should minimize exposure to direct sunlight during this period. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects.

Frequently asked questions

During September, Desio experiences an average high-temperature of 23.3°C (73.9°F) and a low-temperature of 14.3°C (57.7°F). In August, the average heat index (a.k.a. 'felt air temperature', 'real feel'), which represents the influence of relative humidity on air temperature, is appraised at 31°C (87.8°F).

The average relative humidity in September is 72%.

In Desio, during September, the rain falls for 14.6 days and regularly aggregates up to 81mm (3.19") of precipitation.

April through October are months without snowfall.

The average day length in September is 12h and 32min.

In September, on the first day of the month, sunrise is at 06:45 and sunset at 20:00. On the last day of the month, in Desio, sunrise is at 07:20 and sunset at 19:05 CEST.

In September, the average sunshine duration is 9.6h.

In September, the average daily maximum UV index is 5. A UV Index reading of 3 to 5 represents a moderate vulnerability from unprotected exposure to UV radiation.
Average high temperature
Average low temperature
Average wind speed
Average max. wind speed
Average wind speed gusts
Average humidity
Average rainfall
Average rainfall days
Average snowfall
Average snowfall days
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in September
Desio, Italy

  • Average high temperature in September: 23.3°C

The warmest month (with the highest average high temperature) is July (28.3°C).
The month with the lowest average high temperature is January (5.8°C).

  • Average low temperature in September: 14.3°C

The month with the highest average low temperature is August (18.3°C).
The coldest month (with the lowest average low temperature) is January (0.9°C).

Average pressure in September
Desio, Italy

  • Average pressure in September: 1017.1mbar

The month with the highest atmospheric pressure is December (1020mbar).
The months with the lowest atmospheric pressure are April and May (1014.7mbar).

Average wind speed in September
Desio, Italy

  • Average wind speed in September: 5.8km/h

The windiest month (with the highest average wind speed) is April (7km/h).
The calmest months (with the lowest average wind speed) are November and December (5.6km/h).

Average humidity in September
Desio, Italy

  • Average humidity in September: 72%

The month with the highest relative humidity is November (79%).
The months with the lowest relative humidity are July and August (69%).

Average rainfall in September
Desio, Italy

  • Average rainfall in September: 81mm

The wettest month (with the highest rainfall) is August (141mm).
The driest month (with the least rainfall) is January (21mm).

Average rainfall days in September
Desio, Italy

  • Average rainfall days in September: 14.6 days

The month with the highest number of rainy days is July (20.3 days).
The month with the least rainy days is January (6 days).

Average snowfall in September
Desio, Italy

  • Average snowfall in September: 0mm

The month with the highest snowfall is February (19mm).
The months with the least snowfall are April, May, June, July, August, September and October (0mm).

Average snowfall days in September
Desio, Italy

  • Average snowfall days in September: 0 days

The month with the highest number of snowfall days is February (1.3 days).
The months with the least snowfall days are April, May, June, July, August, September and October (0 days).

Average daylight in September /
Average sunshine in September
Desio, Italy

  • Average daylight in September: 12h and 30min

The month with the longest days is June (Average daylight: 15h and 36min).
The month with the shortest days is December (Average daylight: 8h and 48min).

  • Average sunshine in September: 9h and 36min

The month with the most sunshine is July (Average sunshine: 11h and 24min).
The month with the least sunshine is November (Average sunshine: 5h and 0min).

Average sunshine days in September
Desio, Italy

  • Average sunshine days in September: 12.4 days

The month with the most sunshine days is January (23.8 days).
The month with the least sunshine days is June (6.8 days).

Average UV index in September
Desio, Italy

  • Average UV index in September: 5

The months with the highest UV index are June and July (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 2).

Average cloud cover in September
Desio, Italy

  • Average cloud cover in September: 28

The month with the most cloud cover is November (Cloud cover 47).
The month with the least cloud cover is July (Cloud cover 22).

Average visibility in September
Desio, Italy

  • Average visibility in September: 9km

The month with the highest visibility is June (10km).
The months with the lowest visibility are January, February, March, April, May, July, August, September, October, November and December (9km).