Click on a day for an hourly weather forecast
The temperatures in Wien in September are comfortable with low of 12°C and and high up to 21°C.
You can expect about 3 to 8 days of rain in Wien during the month of September. It’s a good idea to bring along your umbrella so that you don’t get caught in poor weather.
Our weather forecast can give you a great sense of what weather to expect in Wien in September 2025.
If you’re planning to visit Wien in the near future, we highly recommend that you review the 14 day weather forecast for Wien before you arrive.
| Month | Temperatures | Rainy Days | Dry Days | Snowy Days | Rainfall | Weather | More details |
|---|---|---|---|---|---|---|---|
| January | 3° / -2° | 8 | 11 | 13 | 65 mm | Awful | Wien in January |
| February | 5° / -1° | 7 | 13 | 9 | 65 mm | Awful | Wien in February |
| March | 10° / 3° | 6 | 20 | 5 | 56 mm | Bad | Wien in March |
| April | 15° / 6° | 5 | 24 | 1 | 56 mm | Good | Wien in April |
| May | 19° / 10° | 9 | 23 | 0 | 123 mm | Ok | Wien in May |
| June | 23° / 14° | 7 | 23 | 0 | 126 mm | Good | Wien in June |
| July | 26° / 16° | 7 | 24 | 0 | 109 mm | Good | Wien in July |
| August | 26° / 16° | 4 | 27 | 0 | 78 mm | Perfect | Wien in August |
| September | 21° / 12° | 5 | 25 | 0 | 89 mm | Good | Wien in September |
| October | 15° / 8° | 5 | 26 | 0 | 74 mm | Good | Wien in October |
| November | 9° / 4° | 5 | 23 | 2 | 55 mm | Bad | Wien in November |
| December | 4° / 0° | 8 | 16 | 7 | 55 mm | Awful | Wien in December |