Click on a day for an hourly weather forecast
The temperatures in Poland in September are usually low and can range between 11°C and 20°C.
You can expect about 3 to 8 days of rain in Poland 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 Poland in September 2025.
If you’re planning to visit Poland in the near future, we highly recommend that you review the 14 day weather forecast for Poland before you arrive.
| Month | Temperatures | Rainy Days | Dry Days | Snowy Days | Rainfall | Weather | More details |
|---|---|---|---|---|---|---|---|
| January | 0° / -4° | 5 | 8 | 18 | 52 mm | Awful | Poland in January |
| February | 2° / -3° | 5 | 9 | 14 | 46 mm | Awful | Poland in February |
| March | 7° / 1° | 5 | 19 | 7 | 44 mm | Bad | Poland in March |
| April | 14° / 5° | 5 | 23 | 2 | 53 mm | Ok | Poland in April |
| May | 19° / 9° | 8 | 23 | 0 | 113 mm | Ok | Poland in May |
| June | 24° / 13° | 6 | 24 | 0 | 88 mm | Perfect | Poland in June |
| July | 25° / 15° | 6 | 25 | 0 | 107 mm | Perfect | Poland in July |
| August | 25° / 15° | 4 | 27 | 0 | 72 mm | Perfect | Poland in August |
| September | 20° / 11° | 5 | 25 | 0 | 60 mm | Good | Poland in September |
| October | 13° / 6° | 5 | 25 | 1 | 58 mm | Ok | Poland in October |
| November | 7° / 3° | 5 | 22 | 3 | 48 mm | Bad | Poland in November |
| December | 2° / -1° | 6 | 13 | 12 | 47 mm | Awful | Poland in December |