Frequently the weather in San Diego through the month of December is 12 with a normal high in the month being 19 with lows around 9 celsius.
| Month | Degrees Celsius |
|---|---|
| Temperature | 12 |
| High Temperature | 19 |
| Low Temperature | 9 |
| Sunshine Per Day | 9 |
Useful Links: San Diego Weather: Average Weather & Yearly Climate