More often than not the weather in Spain during May is 12 with the high being 19 with low average temperatures being 8 celsius. The table below includes more detail:
| Month | Degrees Celsius |
|---|---|
| Temperature | 12 |
| High Temperature | 19 |
| Low Temperature | 8 |
| Sunshine Per Day | 11 |
Useful Links: Spain Weather: Average Weather & Yearly Climate