Click on a day for an hourly weather forecast
The temperatures in Olbia in September are comfortable with low of 18°C and and high up to 26°C.
You can expect about 3 to 8 days of rain in Olbia 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 Olbia in September 2025.
If you’re planning to visit Olbia in the near future, we highly recommend that you review the 14 day weather forecast for Olbia before you arrive.
| Month | Temperatures | Rainy Days | Dry Days | Snowy Days | Rainfall | Weather | More details |
|---|---|---|---|---|---|---|---|
| January | 13° / 7° | 5 | 26 | 0 | 82 mm | Ok | Olbia in January |
| February | 14° / 6° | 4 | 23 | 1 | 64 mm | Good | Olbia in February |
| March | 16° / 8° | 5 | 26 | 0 | 74 mm | Good | Olbia in March |
| April | 19° / 10° | 4 | 26 | 0 | 69 mm | Good | Olbia in April |
| May | 22° / 13° | 4 | 27 | 0 | 69 mm | Good | Olbia in May |
| June | 27° / 17° | 2 | 28 | 0 | 36 mm | Perfect | Olbia in June |
| July | 30° / 20° | 1 | 30 | 0 | 14 mm | Good | Olbia in July |
| August | 30° / 20° | 1 | 30 | 0 | 20 mm | Good | Olbia in August |
| September | 26° / 18° | 4 | 26 | 0 | 67 mm | Perfect | Olbia in September |
| October | 22° / 15° | 4 | 27 | 0 | 73 mm | Good | Olbia in October |
| November | 18° / 11° | 4 | 26 | 0 | 88 mm | Good | Olbia in November |
| December | 14° / 8° | 3 | 28 | 0 | 58 mm | Good | Olbia in December |