Austria
Vienna in September: weather & travel advice
This month's data profile
Strong month under the current formula
Vienna in September is climatically well suited to city breaks and active holidays and hiking. The average daily high is around 21 °C. With about 11 rainy days it is wet.
Historical monthly averages, not a weather forecast. Individual days and years can differ substantially.
Rank among 12 monthly averages
77/100 · #1
Warmth
#4
Dryness
#8
Sun
#6
Published best categories: Overall, City break, Active, Family
Vienna · SeptemberPhoto: Ninanuri · CC BY 2.5Climate facts
- Average high
- 21 °C
- Average low
- 10 °C
- Rainy days (est.)
- 11 rainy days (est.)
- Sun (est.)
- 4 h/day
- Humidity
- 71 %
For your trip planning
September: allow for cooler evenings
Compared with July, both the daytime high and average low fall. October is cooler again and has slightly fewer rainy days in our series, but much less sunshine. For a long evening walk, lower temperatures and the shorter sunshine window matter alongside rain.
Climate evidence with direct month comparison
The highlighted row is the selected month. Precipitation total and rainy days are separate monthly averages.
| Month | Avg high °C | Avg low °C | Rainy days (est.) | Precipitation mm | Sun h/day (est.) | Humidity % | Wind m/s | Score |
|---|---|---|---|---|---|---|---|---|
| August | 26 | 15 | 13 | 83 | 6.2 | 64 | 1.9 | 74 |
| September (selected) | 21 | 10 | 11 | 78 | 4.4 | 71 | 2.1 | 77 |
| October | 15 | 5 | 9 | 50 | 2.7 | 80 | 2.1 | 59 |
How do the previous and next months compare?
Baseline: September (77/100)
Positive and negative values show the change from the selected month.
| Score Δ | Average high Δ | Average low Δ | Rainy days Δ | Rain Δ | Sun Δ | Humidity Δ | Wind Δ | |
|---|---|---|---|---|---|---|---|---|
| August | -3 | +5.3 °C | +4.6 °C | +2.3 | +4.8 mm | +1.8 h | -7.4 % | -0.2 m/s |
| October | -18 | -5.7 °C | -4.7 °C | -1.6 | -27.9 mm | -1.7 h | +8.9 % | ±0 m/s |
All twelve months in context
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Where to stay in Vienna
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Useful next decisions
Frequently asked questions
How warm is Vienna in September?
The average daily high is around 21 °C, with an average daily low of about 10 °C.
Does it rain a lot in Vienna in September?
The curated estimate is about 11 rainy days per month, not a directly measured long-term average. Total precipitation averages around 78 mm for the month. A rainy day does not mean all-day rain.
When is the best time to visit Vienna?
By the climate score, June, July, August and September are the strongest months for Vienna. September is one of them.