Generally, you can anticipate the weather in Paris throughout September is 14. Through the month the highs are about 21 and low around 12 celsius. We have put some more information here:
| Month | Degrees Celsius |
|---|---|
| Temperature | 14 |
| High Temperature | 21 |
| Low Temperature | 12 |
| Sunshine Per Day | 9 |
Useful Links: Paris Weather: Average Weather & Yearly Climate