Typically, the average weather in Nice through September is 20. With the average high being 25 and low being 18 celsius. We have put some more information here:
| Month | Degrees Celsius |
|---|---|
| Temperature | 20 |
| High Temperature | 25 |
| Low Temperature | 18 |
| Sunshine Per Day | 9 |
Useful Links: Nice Weather: Average Weather & Yearly Climate