Click on a day for an hourly weather forecast
The temperatures in Cesky Krumlov in September are quite cold with temperatures between 9°C and 19°C, warm clothes are a must.
You can expect about 3 to 8 days of rain in Cesky Krumlov 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 Cesky Krumlov in September 2025.
If you’re planning to visit Cesky Krumlov in the near future, we highly recommend that you review the 14 day weather forecast for Cesky Krumlov before you arrive.
| Month | Temperatures | Rainy Days | Dry Days | Snowy Days | Rainfall | Weather | More details |
|---|---|---|---|---|---|---|---|
| January | 1° / -4° | 6 | 9 | 16 | 58 mm | Awful | Cesky Krumlov in January |
| February | 3° / -3° | 6 | 10 | 13 | 51 mm | Awful | Cesky Krumlov in February |
| March | 8° / 0° | 7 | 17 | 7 | 56 mm | Awful | Cesky Krumlov in March |
| April | 14° / 4° | 5 | 21 | 3 | 51 mm | Ok | Cesky Krumlov in April |
| May | 17° / 7° | 9 | 22 | 0 | 117 mm | Ok | Cesky Krumlov in May |
| June | 22° / 11° | 7 | 23 | 0 | 137 mm | Ok | Cesky Krumlov in June |
| July | 24° / 12° | 8 | 23 | 0 | 142 mm | Good | Cesky Krumlov in July |
| August | 24° / 13° | 6 | 25 | 0 | 93 mm | Perfect | Cesky Krumlov in August |
| September | 19° / 9° | 5 | 25 | 0 | 73 mm | Good | Cesky Krumlov in September |
| October | 14° / 5° | 5 | 26 | 1 | 58 mm | Good | Cesky Krumlov in October |
| November | 8° / 2° | 4 | 21 | 5 | 45 mm | Bad | Cesky Krumlov in November |
| December | 3° / -2° | 7 | 13 | 11 | 54 mm | Awful | Cesky Krumlov in December |