Typically, you can expect that the weather in Barcelona in the course of October is 16, with highs being around 23 with low of 14 celsius. The table below includes more detail:
| Month | Degrees Celsius |
|---|---|
| Temperature | 16 |
| High Temperature | 23 |
| Low Temperature | 14 |
| Sunshine Per Day | 7 |
Useful Links: Barcelona Weather: Average Weather & Yearly Climate