Click on a day for an hourly weather forecast
The weather in Formia in August is hot. The average temperatures are between 22°C and 29°C.
You can expect a few rainy days in Formia during August, but usually the weather is comfortable in August.
Our weather forecast can give you a great sense of what weather to expect in Formia in August 2026.
If you’re planning to visit Formia in the near future, we highly recommend that you review the 14 day weather forecast for Formia before you arrive.
| Month | Temperatures | Rainy Days | Dry Days | Snowy Days | Rainfall | Weather | More details |
|---|---|---|---|---|---|---|---|
| January | 12° / 7° | 7 | 24 | 0 | 145 mm | Bad | Formia in January |
| February | 12° / 7° | 5 | 22 | 1 | 135 mm | Ok | Formia in February |
| March | 14° / 9° | 6 | 25 | 0 | 116 mm | Good | Formia in March |
| April | 17° / 11° | 5 | 26 | 0 | 76 mm | Good | Formia in April |
| May | 20° / 14° | 4 | 27 | 0 | 76 mm | Good | Formia in May |
| June | 25° / 19° | 3 | 27 | 0 | 49 mm | Perfect | Formia in June |
| July | 28° / 22° | 2 | 29 | 0 | 32 mm | Perfect | Formia in July |
| August | 29° / 22° | 1 | 30 | 0 | 20 mm | Good | Formia in August |
| September | 25° / 19° | 5 | 25 | 0 | 107 mm | Perfect | Formia in September |
| October | 21° / 16° | 5 | 26 | 0 | 130 mm | Good | Formia in October |
| November | 17° / 13° | 8 | 22 | 0 | 195 mm | Ok | Formia in November |
| December | 13° / 9° | 6 | 25 | 0 | 135 mm | Ok | Formia in December |