Typically, the expected weather in Brittany right-through October is 11. Average high degrees are usually 16 with low of 10 celsius. We have put some more information here:
| Month | Degrees Celsius |
|---|---|
| Temperature | 11 |
| High Temperature | 16 |
| Low Temperature | 10 |
| Sunshine Per Day | 5 |
Useful Links: Brittany Weather: Average Weather & Yearly Climate