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.
Temperatures
26° / 18°
Rainy Days
4
Snowy Days
0
Dry Days
26
Rainfall
67
mm
Sun Hours
11.6
Hrs
