Generally the weather in Formia through July is 22. You can expect a high of 29 with low daily temperautes being 16. We have provided a clearer breakdown here:
| Month | Degrees Celsius |
|---|---|
| Temperature | 22 |
| High Temperature | 29 |
| Low Temperature | 16 |
| Sunshine Per Day | 13 |
Useful Links: Formia Weather: Average Weather & Yearly Climate