Austria climate
Monthly averages for Vienna, 2021–2025
In Vienna, the warmest month is July, with an average high of 28°C, and the coldest is January, when nights average −1°C.
About 692 mm of rain falls in a year, on roughly 116 days. September is the wettest month (102 mm) and February the driest (29 mm).
Wind is strongest in January (15 km/h on average) and lightest in August (11 km/h).
Compared with Dublin, July afternoons are 8°C warmer, and January afternoons 3°C colder.
The hottest day in 2021–2025 reached 37.3°C (3 July 2025), and the coldest night fell to −9.6°C (10 January 2024).
Temperature
Bars run from the average night-time low to the average daytime high, in °C.
Rainfall
Average total rainfall each month, in millimetres.
Wind
Average wind speed at 10 metres each month, in km/h.
| Month | High °C | Low °C | Rain mm | Rain days | Sun h/day | Wind km/h |
|---|---|---|---|---|---|---|
| January | 5 | −1 | 41 | 10 | 4.5 | 15 |
| February | 8 | 1 | 29 | 7 | 6.6 | 15 |
| March | 12 | 2 | 35 | 6 | 8.5 | 13 |
| April | 15 | 6 | 62 | 10 | 9.1 | 15 |
| May | 20 | 10 | 67 | 13 | 10.6 | 13 |
| June | 26 | 16 | 70 | 11 | 13.0 | 12 |
| July | 28 | 17 | 70 | 10 | 12.3 | 13 |
| August | 27 | 17 | 75 | 11 | 11.2 | 11 |
| September | 22 | 13 | 102 | 11 | 9.3 | 12 |
| October | 16 | 8 | 42 | 8 | 7.7 | 13 |
| November | 9 | 3 | 50 | 9 | 5.0 | 12 |
| December | 5 | 0 | 49 | 10 | 3.5 | 13 |
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