Vienna Weather in September
Austria · Oceanic climate · Data averaged from 2020-01-01 to 2024-12-31 (5 years)
September in Vienna sees average temperatures ranging from a low of 12.7°C (54.9°F) to a high of 22.0°C (71.6°F), with a mean of 17.1°C (62.8°F). Compared to the annual average of 11.7°C (53.1°F), this month is 5.4°C warmer than the yearly norm. Precipitation averages 100.9mm, making it approximately 42.0mm wetter than the monthly average of 59.0mm. This is the wettest month of the year, with 100.9mm of precipitation and around 12.8 rainy days. The city receives an average of 9.4 hours of sunshine per day during September, with relative humidity averaging 70.9%. Wind speeds reach an average maximum of 19.5 km/h. For travelers, this month offers a temperature experience in Vienna, with wetter-than-average conditions compared to the rest of the year.
There's something about Vienna in December that feels like stepping into a music box. The Christkindlmärkte open, the air smells of glühwein and roasted almonds, and 2°C feels almost cozy when you're wrapped in wool. I spent a winter week there and attended three operas — the cultural calendar peaks when the temperatures drop. Spring (April-May) is when the city thaws; the Stadtpark bursts with tulips and the coffee house terraces reopen. Summer is surprisingly green along the Danube but tourist-heavy. Autumn is when locals reclaim their city.
September vs Adjacent Months
| Metric | August | September | October |
|---|---|---|---|
| Mean Temp | 21.8°C (71.2°F) | 17.1°C (62.8°F) | 12.1°C (53.8°F) |
| Rainfall | 84.7mm | 100.9mm | 53.9mm |
| Sunshine | 10.9 hrs | 9.4 hrs | 7.4 hrs |
| Humidity | 66.7% | 70.9% | 78.4% |
| Wind | 19.0 km/h | 19.5 km/h | 21.2 km/h |
| Rainy Days | 17.2 | 12.8 | 11.8 |
Seasonal Context
September falls in Autumn in the Northern Hemisphere. Autumn sees temperatures gradually cooling from summer highs. For travelers visiting Vienna in September, the data indicates mixed conditions based on the combination of temperature, precipitation, and daylight hours.
Frequently Asked Questions
What is the average temperature in Vienna in September?
The average temperature in Vienna during September ranges from 12.7°C (54.9°F) to 22.0°C (71.6°F), with a mean of 17.1°C (62.8°F).
How much does it rain in Vienna in September?
Vienna receives an average of 100.9mm of precipitation in September, spread across approximately 12.8 rainy days. This is the wettest month of the year.
What should I pack for Vienna in September?
Based on September weather data, pack layers including light jackets and t-shirts, plus an umbrella. Rain gear is essential — this month averages 100.9mm of precipitation.
Is September a good time to visit Vienna?
September is a month with challenging conditions. Plan activities carefully and stay hydrated.
Other Months for Vienna
Cities with Similar September Climate (Oceanic)
Data Source: Open-Meteo historical archive (2020-01-01 to 2024-12-31). Daily measurements aggregated into monthly climate normals. Coordinates: 48.21°, 16.37°. Timezone: Europe/Vienna. Last updated: 2026-07-30.