Normally weather temperatures in Civitavecchia throughout the duration of September is 20 with the high being 25 with lows around 19. We have put some more information below:
| Month | Degrees Celsius |
|---|---|
| Temperature | 20 |
| High Temperature | 25 |
| Low Temperature | 19 |
| Sunshine Per Day | 9 |
Useful Links: Civitavecchia Weather: Average Weather & Yearly Climate