Typically, the average weather in San Sebastian right through the month of June is 16. You can expect a high of 22 with low of 14. The table below has further info:
| Month | Degrees Celsius |
|---|---|
| Temperature | 16 |
| High Temperature | 22 |
| Low Temperature | 14 |
| Sunshine Per Day | 7 |
Useful Links: San Sebastian Weather: Average Weather & Yearly Climate