Click on a day for an hourly weather forecast
The weather in Formentera in September is very hot. The average temperatures are between 23°C and 27°C, drinking water regularly is advisable.
You can expect a few rainy days in Formentera during September, but usually the weather is comfortable in September.
Our weather forecast can give you a great sense of what weather to expect in Formentera in September 2025.
If you’re planning to visit Formentera in the near future, we highly recommend that you review the 14 day weather forecast for Formentera before you arrive.
| Month | Temperatures | Rainy Days | Dry Days | Snowy Days | Rainfall | Weather | More details |
|---|---|---|---|---|---|---|---|
| January | 16° / 11° | 2 | 29 | 0 | 44 mm | Good | Formentera in January |
| February | 16° / 11° | 1 | 27 | 0 | 19 mm | Good | Formentera in February |
| March | 17° / 12° | 4 | 27 | 0 | 63 mm | Good | Formentera in March |
| April | 19° / 14° | 3 | 27 | 0 | 45 mm | Good | Formentera in April |
| May | 22° / 17° | 1 | 30 | 0 | 15 mm | Good | Formentera in May |
| June | 26° / 21° | 1 | 29 | 0 | 11 mm | Perfect | Formentera in June |
| July | 28° / 24° | 0 | 31 | 0 | 6 mm | Perfect | Formentera in July |
| August | 29° / 25° | 1 | 30 | 0 | 10 mm | Good | Formentera in August |
| September | 27° / 23° | 2 | 28 | 0 | 44 mm | Perfect | Formentera in September |
| October | 24° / 19° | 2 | 29 | 0 | 38 mm | Perfect | Formentera in October |
| November | 19° / 15° | 2 | 28 | 0 | 46 mm | Good | Formentera in November |
| December | 17° / 12° | 2 | 29 | 0 | 38 mm | Good | Formentera in December |