Monthly climate guide
Vienna weather in September
With highs near 21°C (71°F) and lows around 11°C (51°F), September feels warm in Vienna. Rainfall averages about 80 mm (some rain) and the sky is often cloudy. Daytime highs are 5°C cooler than August and 6°C warmer than October.
What stands out in September
- Seasonally, September counts as early autumn in Vienna.
- Check the hourly forecast before heading to Belvedere Palace — showers are likely.
- Just 150 km apart, but Vienna runs about 3°C warmer than Linz this month.
- It cools down fast from here: October is about 6°C cooler.
Avg high
21°C
71°F
Avg low
11°C
51°F
Rainfall
80 mm
some rain
Humidity
70%
relative
Sky
60%
cloud · often cloudy
Vienna weather by month
Show the monthly averages as a table
| Month | Avg high | Avg low | Rain | Humidity | Cloud cover |
|---|---|---|---|---|---|
| January | 3°C / 37°F | -3°C / 26°F | 42 mm | 89% | 81% |
| February | 5°C / 40°F | -3°C / 26°F | 39 mm | 85% | 75% |
| March | 10°C / 50°F | 0°C / 32°F | 35 mm | 78% | 63% |
| April | 16°C / 61°F | 5°C / 40°F | 39 mm | 71% | 59% |
| May | 19°C / 67°F | 9°C / 48°F | 97 mm | 71% | 64% |
| June | 24°C / 76°F | 13°C / 56°F | 85 mm | 66% | 62% |
| July | 27°C / 80°F | 15°C / 60°F | 89 mm | 63% | 60% |
| August | 27°C / 80°F | 15°C / 59°F | 76 mm | 63% | 53% |
| September | 21°C / 71°F | 11°C / 51°F | 80 mm | 70% | 60% |
| October | 15°C / 60°F | 6°C / 42°F | 62 mm | 80% | 68% |
| November | 9°C / 48°F | 2°C / 35°F | 42 mm | 88% | 75% |
| December | 4°C / 40°F | -2°C / 29°F | 40 mm | 89% | 80% |
What to pack for September
- T-shirts plus a light layer for the evening
- Comfortable trainers or sandals for long walks
- A compact umbrella or packable rain jacket
- Water-resistant shoes
Is September a good time to visit Vienna?
Our Vienna guide recommends: April to June or September to October, or December for the Christmas markets.
Sit down at a traditional Viennese coffee house (Café Central, Café Sacher) rather than grabbing coffee to go — it's a genuine part of the culture, not just a tourist stop.
Best time to visit Vienna →Other Austria cities in September
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Vienna weather in September. WeatherCompare, 2026 (NASA POWER / ERA5, 2011–2020 monthly averages). https://weathercompare.eu/weather/austria/vienna/september
<a href="https://weathercompare.eu/weather/austria/vienna/september">Vienna weather in September</a> (WeatherCompare)
<iframe src="https://weathercompare.eu/embed/austria/vienna" width="300" height="160" style="border:0;border-radius:12px" loading="lazy" title="Vienna weather in September"></iframe> <p style="font-size:12px"><a href="https://weathercompare.eu/weather/austria/vienna/september">Vienna weather in September</a> – WeatherCompare</p>
Vienna in September: quick answers
Is September a good time to visit Vienna?
September is a reasonable time for Vienna: highs around 21°C and about 80 mm of rain, though not one of the three best months.
How warm is Vienna in September?
Average highs are about 21°C (71°F) and average lows about 11°C (51°F), based on 10 years of daily data.
Does it rain a lot in Vienna in September?
Vienna typically gets around 80 mm of rain in September — some rain.
When is the best time to visit Vienna?
April to June or September to October, or December for the Christmas markets.
Figures are long-term averages for the area around Vienna (NASA POWER / ERA5, 2011–2020), not a forecast for a specific year. For upcoming days, see the live multi-source forecast.