Click on a day for an hourly weather forecast
The temperatures in Olomouc in September are usually low and can range between 10°C and 20°C.
You can expect about 3 to 8 days of rain in Olomouc 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 Olomouc in September 2025.
If you’re planning to visit Olomouc in the near future, we highly recommend that you review the 14 day weather forecast for Olomouc before you arrive.
| Month | Temperatures | Rainy Days | Dry Days | Snowy Days | Rainfall | Weather | More details |
|---|---|---|---|---|---|---|---|
| January | 0° / -5° | 6 | 11 | 14 | 49 mm | Awful | Olomouc in January |
| February | 2° / -3° | 7 | 12 | 10 | 48 mm | Awful | Olomouc in February |
| March | 8° / 1° | 6 | 21 | 5 | 54 mm | Bad | Olomouc in March |
| April | 14° / 4° | 5 | 24 | 2 | 47 mm | Ok | Olomouc in April |
| May | 18° / 8° | 8 | 23 | 0 | 117 mm | Ok | Olomouc in May |
| June | 22° / 12° | 8 | 22 | 0 | 125 mm | Ok | Olomouc in June |
| July | 25° / 14° | 8 | 23 | 0 | 133 mm | Good | Olomouc in July |
| August | 25° / 14° | 5 | 26 | 0 | 94 mm | Perfect | Olomouc in August |
| September | 20° / 10° | 4 | 26 | 0 | 76 mm | Good | Olomouc in September |
| October | 13° / 6° | 4 | 26 | 1 | 63 mm | Ok | Olomouc in October |
| November | 7° / 2° | 5 | 22 | 3 | 52 mm | Bad | Olomouc in November |
| December | 2° / -3° | 7 | 16 | 9 | 49 mm | Awful | Olomouc in December |