Vienna
Austria
Long-term weather forecast
Long-term weather forecast

September weather forecast and climate
Vienna, Austria

The scenic view of the historic Schloss Belvedere in Vienna, Austria built to serve as a summer residence for Prince Eugene Of Savoy
The scenic view of the historic Schloss Belvedere in Vienna, Austria built to serve as a summer residence for Prince Eugene Of Savoy
September sees a change in seasons with the arrival of the mild autumn in Vienna. The average temperatures drop to a moderate range of 13.9°C (57°F) to 21.1°C (70°F) as evenings breezes become common. The sun remains in the sky for 6 hours as the daylight lasts for a long 13 hours.
Leaves start to change color by the fourth week of September as the autumn advances in Vienna. Pack a sweater for the breezy evenings and cold nights. The tapering of the summer heat and a decrease in tourist numbers make September one of the best times to visit Vienna.

What is the temperature in September in Vienna?

The average high-temperature, in September, is 21.1°C (70°F), while the average low-temperature is 13.6°C (56.5°F).

How much does it rain in Vienna in September?

In Vienna, in September, it is raining for 6.9 days, with typically 50.4mm (2") of accumulated precipitation.

How many hours of daylight does Vienna have in September?

The average length of the day in September is 12.6h.

How many hours of sunshine does Vienna have in September?

In September, the average sunshine in Vienna is 6.1h.

What is the UV index intensity in September in Vienna?

In Vienna, Austria, the average daily maximum UV index in September is 4. A UV Index estimate of 3 to 5 represents a medium health risk from unsafe exposure to the Sun's UV rays.
Average temperature in September - Vienna, Austria
  • Average high temperature in September: 21.1°C

The warmest month (with the highest average high temperature) is July (26.7°C).
The month with the lowest average high temperature is January (3.8°C).

  • Average low temperature in September: 13.6°C

The month with the highest average low temperature is August (17.5°C).
The coldest month (with the lowest average low temperature) is January (-0.8°C).

Average rainfall in September - Vienna, Austria
  • Average rainfall in September: 50.4mm

The wettest month (with the highest rainfall) is July (66.6mm).
The driest month (with the lowest rainfall) is January (21.3mm).

Average rainfall days in September - Vienna, Austria
  • Average rainfall days in September: 6.9 days

The month with the highest number of rainy days is June (9.3 days).
The month with the lowest number of rainy days is January (5.3 days).

Average snowfall in September - Vienna, Austria
  • Average snowfall in September: 0mm

The month with the highest snowfall is January (186mm).
Months with the lowest snowfall are May, June, July, August, September and October (0mm).

Average daylight in September / Average sunshine in September - Vienna, Austria
  • Average daylight in September: 12.6h

The month with the longest days is June (Average daylight: 16h).
The month with shortest days is December (Average daylight: 8.4h).

  • Average sunshine in September: 6.1h

The month with most sunshine is July (Average sunshine: 8.5h).
The month with least sunshine is December (Average sunshine: 1.7h).

Average UV index in September - Vienna, Austria
  • Average UV index in September: 4

Months with the highest UV index are June and July (UV index 7).
Months with the lowest UV index are January, November and December (UV index 1).