Average temperatures in Concarneau through the month of September is 14 with a general average high of 20 with lows around 12 degrees celsius. We have put some more detail below here:
| Month | Degrees Celsius |
|---|---|
| Temperature | 14 |
| High Temperature | 20 |
| Low Temperature | 12 |
Useful Links: Concarneau Weather: Average Weather & Yearly Climate