Click on a day for an hourly weather forecast
The temperatures in Ischia in May are comfortable with low of 17°C and and high up to 20°C.
You can expect about 3 to 8 days of rain in Ischia during the month of May. It’s a good idea to bring along your umbrella so that you don’t get caught in poor weather.
Our weather forecast can give you a great sense of what weather to expect in Ischia in May 2026.
If you’re planning to visit Ischia in the near future, we highly recommend that you review the 14 day weather forecast for Ischia before you arrive.
| Month | Temperatures | Rainy Days | Dry Days | Snowy Days | Rainfall | Weather | More details |
|---|---|---|---|---|---|---|---|
| January | 13° / 10° | 8 | 23 | 0 | 163 mm | Bad | Ischia in January |
| February | 13° / 10° | 6 | 22 | 0 | 142 mm | Ok | Ischia in February |
| March | 14° / 11° | 6 | 25 | 0 | 121 mm | Good | Ischia in March |
| April | 17° / 14° | 5 | 25 | 0 | 80 mm | Good | Ischia in April |
| May | 20° / 17° | 4 | 27 | 0 | 80 mm | Good | Ischia in May |
| June | 24° / 21° | 3 | 27 | 0 | 57 mm | Perfect | Ischia in June |
| July | 27° / 24° | 2 | 29 | 0 | 39 mm | Perfect | Ischia in July |
| August | 28° / 25° | 1 | 30 | 0 | 27 mm | Perfect | Ischia in August |
| September | 25° / 22° | 6 | 24 | 0 | 136 mm | Perfect | Ischia in September |
| October | 21° / 19° | 6 | 25 | 0 | 190 mm | Good | Ischia in October |
| November | 18° / 15° | 10 | 20 | 0 | 267 mm | Ok | Ischia in November |
| December | 14° / 12° | 6 | 25 | 0 | 141 mm | Good | Ischia in December |