Click on a day for an hourly weather forecast
The temperatures in Chianciano Terme in September are comfortable with low of 14°C and and high up to 26°C.
You can expect about 3 to 8 days of rain in Chianciano Terme 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 Chianciano Terme in September 2025.
If you’re planning to visit Chianciano Terme in the near future, we highly recommend that you review the 14 day weather forecast for Chianciano Terme before you arrive.
| Month | Temperatures | Rainy Days | Dry Days | Snowy Days | Rainfall | Weather | More details |
|---|---|---|---|---|---|---|---|
| January | 9° / 2° | 7 | 19 | 4 | 110 mm | Awful | Chianciano Terme in January |
| February | 11° / 2° | 7 | 17 | 5 | 114 mm | Awful | Chianciano Terme in February |
| March | 14° / 4° | 7 | 22 | 2 | 105 mm | Bad | Chianciano Terme in March |
| April | 18° / 6° | 6 | 23 | 1 | 89 mm | Good | Chianciano Terme in April |
| May | 21° / 9° | 7 | 24 | 0 | 109 mm | Ok | Chianciano Terme in May |
| June | 26° / 13° | 7 | 23 | 0 | 86 mm | Good | Chianciano Terme in June |
| July | 31° / 17° | 5 | 26 | 0 | 67 mm | Good | Chianciano Terme in July |
| August | 32° / 17° | 3 | 28 | 0 | 55 mm | Good | Chianciano Terme in August |
| September | 26° / 14° | 4 | 26 | 0 | 86 mm | Perfect | Chianciano Terme in September |
| October | 20° / 10° | 4 | 27 | 0 | 76 mm | Good | Chianciano Terme in October |
| November | 15° / 7° | 7 | 22 | 0 | 145 mm | Ok | Chianciano Terme in November |
| December | 11° / 3° | 6 | 22 | 2 | 97 mm | Bad | Chianciano Terme in December |