Generally, average daily wearther in Santa Maria through the whole of December is 21 with a normal high in the month being 26 with low average temperatures being 20 degrees.
| Month | Degrees Celsius |
|---|---|
| Temperature | 21 |
| High Temperature | 26 |
| Low Temperature | 20 |
| Sunshine Per Day | 10 |
Useful Links: Santa Maria Weather: Average Weather & Yearly Climate