Click on a day for an hourly weather forecast
The temperatures in Sankt Polten in September are quite cold with temperatures between 8°C and 21°C, warm clothes are a must.
You can expect about 3 to 8 days of rain in Sankt Polten 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 Sankt Polten in September 2025.
If you’re planning to visit Sankt Polten in the near future, we highly recommend that you review the 14 day weather forecast for Sankt Polten before you arrive.
| Month | Temperatures | Rainy Days | Dry Days | Snowy Days | Rainfall | Weather | More details |
|---|---|---|---|---|---|---|---|
| January | 3° / -6° | 9 | 7 | 15 | 85 mm | Awful | Sankt Polten in January |
| February | 4° / -5° | 9 | 8 | 13 | 76 mm | Awful | Sankt Polten in February |
| March | 10° / -1° | 8 | 17 | 7 | 71 mm | Awful | Sankt Polten in March |
| April | 15° / 3° | 7 | 21 | 3 | 75 mm | Bad | Sankt Polten in April |
| May | 19° / 6° | 11 | 20 | 0 | 168 mm | Ok | Sankt Polten in May |
| June | 24° / 9° | 10 | 20 | 0 | 186 mm | Good | Sankt Polten in June |
| July | 26° / 11° | 9 | 22 | 0 | 169 mm | Good | Sankt Polten in July |
| August | 26° / 12° | 7 | 24 | 0 | 114 mm | Good | Sankt Polten in August |
| September | 21° / 8° | 6 | 24 | 0 | 106 mm | Good | Sankt Polten in September |
| October | 15° / 4° | 7 | 24 | 0 | 84 mm | Ok | Sankt Polten in October |
| November | 9° / 0° | 6 | 21 | 3 | 56 mm | Bad | Sankt Polten in November |
| December | 4° / -3° | 8 | 13 | 10 | 67 mm | Awful | Sankt Polten in December |