Normally the weather in Santa Maria right-through May is 21 with a normal high in the month being 25 with lows about 20 celsius. The table below includes more detail:
| Month | Degrees Celsius |
|---|---|
| Temperature | 21 |
| High Temperature | 25 |
| Low Temperature | 20 |
| Sunshine Per Day | 9 |
Useful Links: Santa Maria Weather: Average Weather & Yearly Climate