Average temperatures within Interlaken all through October is 8. You can expect highs around 12 degrees and a low of 6 celsius. We have put some more information here:
| Month | Degrees Celsius |
|---|---|
| Temperature | 8 |
| High Temperature | 12 |
| Low Temperature | 6 |
| Sunshine Per Day | 5 |
Useful Links: Interlaken Weather: Average Weather & Yearly Climate