Click on a day for an hourly weather forecast
The temperatures in Gliwice in September are usually low and can range between 12°C and 20°C.
You can expect about 3 to 8 days of rain in Gliwice 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 Gliwice in September 2025.
If you’re planning to visit Gliwice in the near future, we highly recommend that you review the 14 day weather forecast for Gliwice before you arrive.
| Month | Temperatures | Rainy Days | Dry Days | Snowy Days | Rainfall | Weather | More details |
|---|---|---|---|---|---|---|---|
| January | 1° / -3° | 6 | 9 | 17 | 50 mm | Awful | Gliwice in January |
| February | 3° / -2° | 6 | 10 | 13 | 43 mm | Awful | Gliwice in February |
| March | 8° / 2° | 6 | 17 | 8 | 47 mm | Bad | Gliwice in March |
| April | 15° / 6° | 5 | 22 | 3 | 44 mm | Ok | Gliwice in April |
| May | 19° / 9° | 7 | 24 | 0 | 87 mm | Ok | Gliwice in May |
| June | 23° / 13° | 6 | 24 | 0 | 93 mm | Perfect | Gliwice in June |
| July | 25° / 15° | 6 | 25 | 0 | 95 mm | Perfect | Gliwice in July |
| August | 26° / 16° | 4 | 27 | 0 | 62 mm | Perfect | Gliwice in August |
| September | 20° / 12° | 5 | 25 | 0 | 71 mm | Good | Gliwice in September |
| October | 14° / 7° | 4 | 26 | 1 | 61 mm | Good | Gliwice in October |
| November | 9° / 4° | 5 | 21 | 4 | 41 mm | Bad | Gliwice in November |
| December | 3° / -1° | 6 | 14 | 11 | 43 mm | Awful | Gliwice in December |