Typically, the expected weather in San Sebastian right through the month of January is 7. You can expect highs around 12 with low temperatures being around 5 degrees celsius. We have put some more detail below here:
| Month | Degrees Celsius |
|---|---|
| Temperature | 7 |
| High Temperature | 12 |
| Low Temperature | 5 |
| Sunshine Per Day | 5 |
Useful Links: San Sebastian Weather: Average Weather & Yearly Climate