Click on a day for an hourly weather forecast
The temperatures in Bastia in September are comfortable with low of 18°C and and high up to 25°C.
You can expect about 3 to 8 days of rain in Bastia 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 Bastia in September 2025.
If you’re planning to visit Bastia in the near future, we highly recommend that you review the 14 day weather forecast for Bastia before you arrive.
| Month | Temperatures | Rainy Days | Dry Days | Snowy Days | Rainfall | Weather | More details |
|---|---|---|---|---|---|---|---|
| January | 12° / 7° | 5 | 26 | 0 | 71 mm | Ok | Bastia in January |
| February | 12° / 7° | 4 | 23 | 1 | 74 mm | Ok | Bastia in February |
| March | 14° / 8° | 4 | 27 | 0 | 77 mm | Good | Bastia in March |
| April | 17° / 10° | 4 | 26 | 0 | 53 mm | Good | Bastia in April |
| May | 21° / 13° | 4 | 27 | 0 | 63 mm | Good | Bastia in May |
| June | 25° / 17° | 2 | 28 | 0 | 49 mm | Perfect | Bastia in June |
| July | 28° / 20° | 3 | 28 | 0 | 40 mm | Perfect | Bastia in July |
| August | 28° / 20° | 2 | 29 | 0 | 41 mm | Perfect | Bastia in August |
| September | 25° / 18° | 3 | 27 | 0 | 72 mm | Perfect | Bastia in September |
| October | 21° / 15° | 5 | 26 | 0 | 91 mm | Good | Bastia in October |
| November | 16° / 11° | 4 | 26 | 0 | 81 mm | Good | Bastia in November |
| December | 13° / 8° | 3 | 28 | 0 | 56 mm | Ok | Bastia in December |