September weather forecastVienna, Austria
September
Weather in September
September in Vienna witnesses a smooth transition from the simmering summer towards the chillier autumn. The notable change in weather is shown in the average peak temperatures lowering to 21.1°C (70°F). Fall's onset does bring a cooler air, yet the days remain moderately warm for comfortable sightseeing and lingering in coffee houses. Rainfall occurrence drops, maintaining a balanced weather pattern throughout the month.Temperature
The start of September in Vienna signals a decrease in the average high-temperature, transitioning from a warm 26.6°C (79.9°F) in August to an agreeable 21.1°C (70°F). In Vienna, the average low-temperature during the month of September is a moderate 13.6°C (56.5°F).Rainfall
In Vienna, during September, the rain falls for 6.9 days and regularly aggregates up to 50mm (1.97") of precipitation. In Vienna, during the entire year, the rain falls for 88 days and collects up to 548mm (21.57") of precipitation.Snowfall
May through October are months without snowfall in Vienna.Daylight
In September, the average length of the day in Vienna is 12h and 35min.On the first day of September, sunrise is at 06:12 and sunset at 19:35. On the last day of the month, sunrise is at 06:53 and sunset at 18:35 CEST.
Sunshine
In September, the average sunshine is 6.1h.UV index
In September, the average daily maximum UV index is 4. A UV Index estimate of 3 to 5 represents a medium health hazard from unprotected exposure to Sun's UV rays for the ordinary person.Note: In September, the maximum UV index of 4 suggests these recommendations:
Take necessary precautions - Protection from skin and eye injury is mandatory. The most potent solar radiation is around mid-day, so one should minimize exposure to direct sunlight during this period. Your best bet for sun defense on the face, eyes, and neck is a hat with a wide brim.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
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 least 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 least 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).
The months with the least snowfall are May, June, July, August, September and October (0mm).
Average daylight in September /
Average sunshine in September
Vienna, Austria
- Average daylight in September: 12h and 36min
The month with the longest days is June (Average daylight: 16h and 0min).
The month with the shortest days is December (Average daylight: 8h and 24min).
- Average sunshine in September: 6h and 6min
The month with the most sunshine is July (Average sunshine: 8h and 30min).
The month with the least sunshine is December (Average sunshine: 1h and 42min).
Average UV index in September
Vienna, Austria
- Average UV index in September: 4
The months with the highest UV index are June and July (UV index 7).
The months with the lowest UV index are January, November and December (UV index 1).
