Climate averages 1991–2020
Vienna weather
in August.
A warm, moderately wet month: the 2nd warmest and the joint 8th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
August is a warm month in Vienna: daytime highs average 25.7°C and nights cool to about 16.0°C. By daytime temperature it is the 2nd warmest of the 12 months.
Expect about 71 mm of rain on roughly 10 days, which makes August a moderately wet month (the joint 8th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 14 h 19 min on an average August day.
The nearest other city in this atlas is Bratislava (55 km away). In August its highs average 26.1°C, about as warm as Vienna, with 67 mm of rain.
Among the 6 cities listed in Austria, Vienna ranks 1st of 6 for the warmest August highs and 1st of 6 for the driest August (rainfall, lowest first). The mean August high of those 6 cities is 24.2°C; Vienna is 1.5°C warmer than that mean.
From August to September, average highs fall by 5.3°C to 20.3°C, and monthly rainfall stays at 71 mm.
The annual picture
August in context
Monthly rainfall
Average total · mmAverages from hourly ERA5 reanalysis data. Actual weather varies from year to year. How these numbers are calculated
Every month, side by side
Vienna climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 3.1°C-2.9°C | -2.9°C | 35 | 8.3 | 8.89 h |
| February | 5.5°C-2.2°C | -2.2°C | 32 | 7.6 | 10.210 h |
| March | 10.1°C0.9°C | 0.9°C | 47 | 9.8 | 11.912 h |
| April | 15.7°C5.4°C | 5.4°C | 45 | 9.0 | 13.614 h |
| May | 19.9°C10.3°C | 10.3°C | 72 | 11.9 | 15.215 h |
| June | 23.7°C14.2°C | 14.2°C | 76 | 11.8 | 16.016 h |
| July | 25.8°C16.3°C | 16.3°C | 79 | 12.3 | 15.616 h |
| August, selected | 25.7°C16.0°C | 16.0°C | 71 | 10.1 | 14.314 h |
| September | 20.3°C11.8°C | 11.8°C | 71 | 9.4 | 12.613 h |
| October | 14.7°C7.1°C | 7.1°C | 47 | 8.7 | 10.911 h |
| November | 8.7°C2.7°C | 2.7°C | 43 | 9.1 | 9.39 h |
| December | 3.8°C-1.7°C | -1.7°C | 38 | 8.8 | 8.48 h |
Rainfall is the average of the 30 separate monthly totals. A rain day is a local calendar day with at least 1 mm of precipitation. Daylight is the calculated sunrise-to-sunset length, not measured sunshine.
Compare places
August in nearby cities
- Bratislava in AugustSlovakia · 55 kmHigh 26.1°C · Low 16.4°C · 67 mm rain
- Szombathely in AugustHungary · 110 kmHigh 25.7°C · Low 16.2°C · 78 mm rain
- Győr in AugustHungary · 111 kmHigh 26.7°C · Low 17.1°C · 62 mm rain
- Brno in AugustCzechia · 111 kmHigh 24.9°C · Low 15.3°C · 69 mm rain
- Nitra in AugustSlovakia · 127 kmHigh 26.4°C · Low 16.3°C · 62 mm rain
- Graz in AugustAustria · 145 kmHigh 24.0°C · Low 13.8°C · 89 mm rain
- Zlín in AugustCzechia · 148 kmHigh 24.3°C · Low 15.0°C · 80 mm rain
- Linz in AugustAustria · 155 kmHigh 24.3°C · Low 15.3°C · 86 mm rain
Read the numbers correctly
Climate, not a promise.
These patterns help compare months. They cannot tell you the weather on a specific day of your trip.
Sources, method and limitsHow these numbers are made (what the highs, lows and rain days mean, the sources and the model cell used for Vienna) is explained once on the Vienna year overview and on the Sources, method and limits page.