País Vasco · Gipuzkoa
Weather in San Sebastián in September
September in San Sebastián is mild and wet: highs average 21.1°C (70°F), lows 14.8°C, with 111 mm of rain on 10.1 days with 1 mm or more and 6.0 hours of sun a day.
San Sebastián across the year
Average daily high and low Average rainfall
Compared with August, the average high is 1.4°C lower and rainfall is 6 mm lower. Among the 60 places with month pages, San Sebastián ranks 60 for the warmest average high in September (1 = warmest) and 1 for the wettest.
September compared with places of similar warmth
| Place | Avg high °C | Avg low °C | Rain mm | Sun h/day |
|---|---|---|---|---|
| San Sebastián | 21.1 | 14.8 | 111 | 6.0 |
| A Coruña | 22.0 | 15.2 | 64 | 6.4 |
| Oviedo | 22.1 | 13.1 | 66 | 5.5 |
| Santander | 22.8 | 14.4 | 83 | 5.3 |
| Santiago de Compostela | 22.8 | 11.9 | 107 | 6.1 |
| Vigo | 22.8 | 13.8 | 102 | 7.1 |
| León | 22.9 | 10.1 | 39 | 8.2 |
See September in every place on one page, Madrid, Barcelona, Seville.
Questions
What is the weather like in San Sebastián in September?
In September the average daily high in San Sebastián is 21.1°C (70°F) and the average low 14.8°C (59°F). It is mild and wet: 111 mm of rain on 10.1 days with 1 mm or more, with 6.0 hours of sun a day.
Does it rain in San Sebastián in September?
On average 111 mm of rain falls in September, on 10.1 days with 1 mm or more. That makes September the 9th wettest month of the year (1 = wettest).
Is this a forecast?
No. These are climate normals: the average for 1981–2010. Any one year can be warmer, colder, drier or wetter.