Click on a day for an hourly weather forecast
The temperatures in Cluj Napoca in September are comfortable with low of 11°C and and high up to 21°C.
You can expect about 3 to 8 days of rain in Cluj Napoca 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 Cluj Napoca in September 2025.
If you’re planning to visit Cluj Napoca in the near future, we highly recommend that you review the 14 day weather forecast for Cluj Napoca before you arrive.
| Month | Temperatures | Rainy Days | Dry Days | Snowy Days | Rainfall | Weather | More details |
|---|---|---|---|---|---|---|---|
| January | 0° / -6° | 8 | 10 | 14 | 69 mm | Awful | Cluj Napoca in January |
| February | 3° / -4° | 8 | 10 | 11 | 68 mm | Awful | Cluj Napoca in February |
| March | 8° / 1° | 7 | 18 | 6 | 83 mm | Awful | Cluj Napoca in March |
| April | 15° / 5° | 9 | 20 | 2 | 112 mm | Bad | Cluj Napoca in April |
| May | 19° / 9° | 14 | 17 | 0 | 201 mm | Ok | Cluj Napoca in May |
| June | 24° / 13° | 15 | 15 | 0 | 216 mm | Good | Cluj Napoca in June |
| July | 26° / 14° | 11 | 20 | 0 | 156 mm | Good | Cluj Napoca in July |
| August | 27° / 15° | 5 | 26 | 0 | 84 mm | Perfect | Cluj Napoca in August |
| September | 21° / 11° | 4 | 26 | 0 | 71 mm | Good | Cluj Napoca in September |
| October | 15° / 6° | 5 | 25 | 0 | 87 mm | Good | Cluj Napoca in October |
| November | 9° / 3° | 5 | 22 | 3 | 61 mm | Bad | Cluj Napoca in November |
| December | 2° / -3° | 7 | 14 | 10 | 63 mm | Awful | Cluj Napoca in December |