Weather in Vienna in September 2025
Average weather
Average temperature in Vienna in September
Going from a maximum of +90°F during the day to a minimum of +55°F during the night, the temperature in September averages around +81°F.
The average maximum temperature goes down 16% by the end of the month, compared with the beginning of the month, from +77°F to +72°F.
Is Vienna warm or cold in September?
Vienna is typically mild in September.
Maximum temperatures go down compared to the previous month from +79°F to +70°F. The minimum temperature also goes down from +61°F to +54°F.
Pack a light jacket as it will be warm in the day and cool in the evenings.
Take a look at how September is compared to other months in Vienna:
Climate in Vienna in September
| August | September | October | ||||
|---|---|---|---|---|---|---|
| Avg. temperature | ||||||
| +79°F | +70°F | +59°F | ||||
| Min. temperature | ||||||
| +46°F | +36°F | +19°F | ||||
| Max. temperature | ||||||
| +100°F | +93°F | +82°F | ||||
| Rainfall | ||||||
| 89 mm | 81 mm | 52 mm | ||||
| Wind | ||||||
| 3 m/s | 3 m/s | 3 m/s | ||||
| Humidity | ||||||
| 65% | 71% | 76% | ||||
| Air pressure | ||||||
| 1014 HPa | 1016 HPa | 1017 HPa | ||||
| Sunny days | ||||||
| 9 | 9 | 7 | ||||
| Cloudy days | ||||||
| 3 | 6 | 10 | ||||
| Rainy days | ||||||
| 14 | 13 | 14 | ||||
| Snowy days | ||||||
| 0 | 0 | 0 | ||||
September weather is still as good as in August. It’s getting colder in September. From +79°F in the day, the average maximum temperature lowers to +70°F. As September arrives, the amount of rainfall goes down. On average, the rainfall volume decreases from 89 mm to 81 mm. Humidity rises from 65% to 71%. The average wind speed doesn’t change much during September, staying around 3 m/s. The amount of sunny days stay about the same, averaging 9 sunny days during the month.
Next month (October) brings a further decline in the weather.
Wind
The average wind speed is 3 m/s getting up to 6 m/s which is a medium breeze. You can feel it, especially getting out of the water.
The average wind speed in Vienna is gradually increasing during September, going from 1 m/s to 5 m/s over the course of the month.
Rain
How was the weather last September in Vienna?
Climate Change Over the Years
The climate in Vienna in September has not changed that much over the last 43 years.
The average temperature was the lowest in 1996 (+55°F) and the highest in 2023 (+63°F). The driest year was 2003 with only 435 mm of rainfall, and the wettest year was 2019 with 2441 mm.
FAQ
Is September a good time to visit Vienna?
Can you sunbathe in Vienna in September?
Is Vienna rainy in September?
Is it sunny in Vienna in September?
Other cities in Austria
Monthly weather in Vienna
Source of the data
For this page, we’ve looked at the typical weather in Vienna, based on historical hourly weather data from January 1, 1979, to December 31, 2023.
For past dates, we show actual recorded data at the location at that time. Forecasts are based on recorded weather during that day of the year, averaged over the total years for which we have records (unless stated otherwise). The daily temperature is the highest recorded temperature in the shadow during that day.