Typically the weather in Annecy right through September is 13. With the average high being 20 and low average expected to be 9 degrees celsius. We have put some more detail below here:
| Month | Degrees Celsius |
|---|---|
| Temperature | 13 |
| High Temperature | 20 |
| Low Temperature | 9 |
| Sunshine Per Day | 7 |
Useful Links: Annecy Weather: Average Weather & Yearly Climate