Normally average temperatures in Cannes in the month of September is 18. Through the month the highs are about 24 degrees celsius and a low of 15 celsius. We have put some more information here:
| Month | Degrees Celsius |
|---|---|
| Temperature | 18 |
| High Temperature | 24 |
| Low Temperature | 15 |
| Sunshine Per Day | 10 |
Useful Links: Cannes Weather: Average Weather & Yearly Climate