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July is the hottest month in Vienna, with an average high of 27°C / 81°F; January is the coldest (4°C / 38°F). May is the wettest month, averaging 79 mm / 3.1 in of precipitation.
| Month | High °C / °F | Low °C / °F | Precip mm / in | Wet days |
|---|---|---|---|---|
| Jan | 4 / 38 | -1 / 30 | 42 / 1.7 | 9 |
| Feb | 6 / 43 | 0 / 31 | 38 / 1.5 | 7 |
| Mar | 11 / 52 | 3 / 37 | 52 / 2.0 | 9 |
| Apr | 17 / 63 | 7 / 44 | 42 / 1.7 | 6 |
| May | 21 / 70 | 11 / 52 | 79 / 3.1 | 9 |
| Jun | 25 / 77 | 15 / 58 | 70 / 2.8 | 8 |
| Jul | 27 / 81 | 16 / 62 | 78 / 3.1 | 9 |
| Aug | 27 / 80 | 16 / 61 | 69 / 2.7 | 8 |
| Sep | 21 / 70 | 12 / 54 | 64 / 2.5 | 7 |
| Oct | 15 / 58 | 8 / 46 | 47 / 1.9 | 7 |
| Nov | 9 / 48 | 4 / 39 | 46 / 1.8 | 8 |
| Dec | 4 / 39 | 0 / 31 | 47 / 1.9 | 9 |
Extremes since 1855: highest 39°C / 101°F (August 8, 2013), lowest -26°C / -15°F (February 11, 1929).
Daylight lasts about 15.9 hours in June and 8.1 hours in December.
Data: Meteostat — Wien / Hohe Warte, 1991–2020 averages.
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