Typically, you can expect that the weather in Costa Smeralda in May is 15 with a normal high in the month being 23 with low average temperatures being 11 degrees. We have put some more details below:
| Month | Degrees Celsius |
|---|---|
| Temperature | 15 |
| High Temperature | 23 |
| Low Temperature | 11 |
| Sunshine Per Day | 11 |
Useful Links: Costa Smeralda Weather: Average Weather & Yearly Climate