The temperatures in Donostia San Sebastian in September are comfortable with low of 16°C and and high up to 21°C.
You can expect about 3 to 8 days of rain in Donostia San Sebastian 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 Donostia San Sebastian in September 2024.
If you’re planning to visit Donostia San Sebastian in the near future, we highly recommend that you review the 14 day weather forecast for Donostia San Sebastian before you arrive.
Temperatures
21° / 16°
Rainy Days
5
Snowy Days
0
Dry Days
25
Rainfall
97
mm
Sun Hours
10.6
Hrs