Click on a day for an hourly weather forecast
The temperatures in Brno 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 Brno 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 Brno in September 2024.
If you’re planning to visit Brno in the near future, we highly recommend that you review the 14 day weather forecast for Brno before you arrive.
| Month | Temperatures | Rainy Days | Dry Days | Snowy Days | Rainfall | Weather | More details |
|---|---|---|---|---|---|---|---|
| January | 1° / -3° | 5 | 11 | 14 | 47 mm | Awful | Brno in January |
| February | 3° / -2° | 5 | 12 | 11 | 44 mm | Awful | Brno in February |
| March | 9° / 2° | 5 | 21 | 5 | 46 mm | Bad | Brno in March |
| April | 15° / 5° | 4 | 24 | 1 | 43 mm | Good | Brno in April |
| May | 18° / 8° | 8 | 23 | 0 | 104 mm | Ok | Brno in May |
| June | 23° / 12° | 7 | 23 | 0 | 124 mm | Good | Brno in June |
| July | 25° / 14° | 7 | 24 | 0 | 102 mm | Good | Brno in July |
| August | 26° / 15° | 4 | 27 | 0 | 68 mm | Perfect | Brno in August |
| September | 20° / 11° | 4 | 26 | 0 | 72 mm | Good | Brno in September |
| October | 14° / 6° | 4 | 26 | 1 | 55 mm | Good | Brno in October |
| November | 8° / 3° | 5 | 23 | 3 | 41 mm | Bad | Brno in November |
| December | 3° / -2° | 7 | 15 | 10 | 49 mm | Awful | Brno in December |