Generally, average daily wearther in Formia through August is 22. Average high is typically 29 with low temperatures being around 18. Our table below has the full details:
| Month | Degrees Celsius |
|---|---|
| Temperature | 22 |
| High Temperature | 29 |
| Low Temperature | 18 |
| Sunshine Per Day | 13 |
Useful Links: Formia Weather: Average Weather & Yearly Climate