Climate in Donostia / San Sebastian: average temperature by month
In Donostia / San Sebastian the warmest month is August, with 22.8 °C on average in the afternoon; the coolest is January, with 11.1 °C.
Measured at the weather station San Sebastian - Igueldo, 5 km away.
| Month | Average high | Coolest to warmest day |
|---|---|---|
| January | 11.1 °C | 10.8 °C – 11.6 °C |
| February | 12.3 °C | 11.7 °C – 12.6 °C |
| March | 13.8 °C | 12.6 °C – 14.6 °C |
| April | 15.4 °C | 14.7 °C – 16.3 °C |
| May | 17.9 °C | 16.4 °C – 19.3 °C |
| June | 20.5 °C | 19.4 °C – 21.4 °C |
| July | 22.1 °C | 21.3 °C – 22.6 °C |
| August | 22.8 °C | 22.6 °C – 23.1 °C |
| September | 21.5 °C | 20.1 °C – 22.5 °C |
| October | 18.9 °C | 17.1 °C – 20.0 °C |
| November | 14.4 °C | 12.6 °C – 16.9 °C |
| December | 12.2 °C | 11.5 °C – 12.6 °C |