Click on a day for an hourly weather forecast
The temperatures in Castelsardo in May are usually low and can range between 14°C and 20°C.
You can expect about 3 to 8 days of rain in Castelsardo 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 Castelsardo in May 2025.
If you’re planning to visit Castelsardo in the near future, we highly recommend that you review the 14 day weather forecast for Castelsardo before you arrive.
| Month | Temperatures | Rainy Days | Dry Days | Snowy Days | Rainfall | Weather | More details |
|---|---|---|---|---|---|---|---|
| January | 12° / 8° | 5 | 26 | 0 | 84 mm | Ok | Castelsardo in January |
| February | 12° / 7° | 4 | 23 | 1 | 72 mm | Ok | Castelsardo in February |
| March | 14° / 8° | 5 | 27 | 0 | 68 mm | Good | Castelsardo in March |
| April | 17° / 11° | 4 | 26 | 0 | 67 mm | Good | Castelsardo in April |
| May | 20° / 14° | 3 | 28 | 0 | 53 mm | Good | Castelsardo in May |
| June | 25° / 18° | 2 | 28 | 0 | 29 mm | Perfect | Castelsardo in June |
| July | 28° / 21° | 0 | 31 | 0 | 14 mm | Perfect | Castelsardo in July |
| August | 28° / 22° | 2 | 29 | 0 | 26 mm | Perfect | Castelsardo in August |
| September | 25° / 19° | 2 | 28 | 0 | 57 mm | Perfect | Castelsardo in September |
| October | 21° / 16° | 4 | 27 | 0 | 85 mm | Good | Castelsardo in October |
| November | 16° / 12° | 6 | 24 | 0 | 119 mm | Good | Castelsardo in November |
| December | 13° / 9° | 4 | 27 | 0 | 82 mm | Ok | Castelsardo in December |