Generally the weather in San Sebastian throughout the month of August is 19 with a normal high in the month being 25 with low daily temperautes being 16. The table below has further info:
| Month | Degrees Celsius |
|---|---|
| Temperature | 19 |
| High Temperature | 25 |
| Low Temperature | 16 |
| Sunshine Per Day | 7 |
Useful Links: San Sebastian Weather: Average Weather & Yearly Climate