Usually the average weather in Puerto Rico during the month of December is 17. With the average high being 21 and average daily low being 16 degrees celsius. We have put some more detail below here:
| Month | Degrees Celsius |
|---|---|
| Temperature | 17 |
| High Temperature | 21 |
| Low Temperature | 16 |
| Sunshine Per Day | 7 |
Useful Links: Puerto Rico Weather: Average Weather & Yearly Climate